Cmsemicon CMS32L051 User manual

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 1 / 703
CMS32L051 User Manual
Ultra-low-power 32-bit microcontroller based on the ARM®Cortex®-M0+
V1.2.2
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
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

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 2 / 703
Documentation Instructions
This manual is a technical reference manual for CMS32L051 microcontroller products, and the technical
reference manual is an application note on how to use this series of products, including the structure, functional
description, and function description of each functional module. Details such as operating modes and register
configuration.
The Technical Reference Manual is a description of all functional modules in this series of products, please
refer to the data sheet for the description of the characteristics of the product (i.e. the function carrying situation).
The data sheet information is as follows:
CMS32L051xx: CMS32L051xx_datasheet_vx.x.x. pdf
Usually in the early stage of chip selection, the first thing to see is to look at the data sheet to evaluate whether
the product can meet the functional requirements of the design; After basically selecting the required product, it is
necessary to check the technical reference manual to determine whether the working mode of each functional
module meets the requirements; When determining that the selection enters the programming design phase, a
detailed technical reference manual is required to understand the specific implementation of each function and the
register configuration. Refer to the data sheet when designing your hardware for information such as voltage,
current, drive capability, and pin assignment.
For a detailed description of the Cortex-M0+ core, SysTick timer, and NVIC, please refer to the documentation for
the corresponding ARM.

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 3 / 703
Contents
Documentation Instructions ......................................................................................................2
Chapter 1 CPU............................................................................................................. 14
  .............................................................................................................................................
  ...................................................................................................................
 .............................................................................................................................
  ...............................................................................................................................
  ...................................................................................................................
Chapter 2 Pin Function................................................................................................ 18
  ........................................................................................................................................
 ....................................................................................................................
  ...............................................................................................
 ..........................................................................................................
 ......................................................................................................................
 ..............................................................................................
 ...........................................................................................
  ...................................................................................
 ...............................................................................
 ............................................................................................
  ...........................................................................................
  ............................................
         
       
......................
  ............................................................
  .....................................................................................................................
  ........................................................................
 ...............................................................
 ............................
 ...............................................................................................
Chapter 3 System Structure......................................................................................... 57
  .............................................................................................................................................
  ....................................................................................................................
Chapter 4 Clock Generation Circuit ............................................................................. 60
  ..............................................................................................
 ....................................................................................................
  ................................................................................
 ...........................................................................
 ...........................................................................................
 ............................................................................
 ...........................................
 ..............................................................
  ........................................................................
 ............................................................
  ...................................

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 4 / 703
  ...............................................................
  .....................................................................
 ............................................................................................................
  ....................................................................................................................
  ..................................................................................................................
  .....................................................................................................
  ......................................................................................................
  ..................................................................................................
 ........................................................................................................................................
 ...............................................................
  ...........................................................................
 .........................................................................
  .....................................................................................
 .........................................
  ........................................
  .............................................................................
 .........................................................................................
  ..........................................................
  ..................................................................................................................
 ................................................................................................................
 ...................................................................................................................
Chapter 5 Universal Timer Unit (Timer4)................................................................... 107
 .........................................................................................................
  ..................................................................................
  ..................................................................................
  ........................
 ...............................................................
  ..................................................................................................
 .......................................................................................
 .......................................................................................
 ............................................................................................
 ..............................................................................................
 .........................................................................
 .........................................................................................
  ......................................................................................
  ...........................................................................................
  ...........................................................................................
  ........................................................................
 ......................................................................................
  .......................................................................................
  ...............................................................................
 ...................................................................................
  ................................................................................................
 .......................................................................................
  ....................................................................................
  .....................................................................................
  .....................................................................................

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 5 / 703
 ..................................................
  ...............................................................................................
  .....................................................
 
 
  ...................................................................................................................
 .................................................................................................................
 ...............................................................................................................
 .................................................................................................................
  ........................................................................................
 ...................................................................................
 .................................................................................................
  .....................................................................................
  .........................................................................................
  .....................................................
  .............................................................................................................
 .............................................................................................
  .................................................................................................................................
 ..................................................................
 .................................................
 .................................................................
  ...........................................................................................
 ..................................................................................................
 ........................................................................
  ...........................................
  ......................................................................................................
  ..............................................................
 ......................................................................
 .......................................................................................................
  ............................................................................
Chapter 6 Function of EPWM Output Control Circuit................................................. 205
  ................................................................................................
  ......................................................................
 ........................................................................................
 ...............................................................
 .............................................................................
  ..................................................
  ................................................
 .........................................................................................
 ..............................................
 .........................................................................................
 ................................................................................................................................
  ......................................................................................................................
  .....................................................................................................
 ...........................................................................................
  ..........................................................................................
  ................................................................

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 6 / 703
  .......................................................................................................
 .....................................................................................................
  ..........................................................................................
  .........................................................................................................................
  .......................................................................................................
Chapter 7 Real-Time Clock........................................................................................ 220
  ................................................................................................................
  ...............................................................................................................
 ............................................................................................
 ........................................................................................
  .............................................................................
 ...............................................................................
 ...............................................................................
  ...............................................................................
 ....................................................................................................
  ......................................................................................................
  ....................................................................................................
 ..........................................................................................................
  ..................................................................................................
  ................................................................................................
  ....................................................................................................
  .........................................................................................
  .............................................................................................
  ...........................................................................................
 .........................................................................................
  ..............................................................................................................
 ..............................................................................................
 .........................................................................
 ..........................................................................
  ...............................................................................................
 ..............................................................................................
  ............................................................
Chapter 8 15-Bit Interval Timer.................................................................................. 245
 .........................................................................................................
 ........................................................................................................
  ....................................................................................
 ........................................................................................
  .............................................................................
 ..............................................................................
  ...........................................................................................................
  ........................................................................................
  ............
Chapter 9 Clock output/Buzzer Output Controller...................................................... 251
  ...........................................................................
  ............................................................................
 .........................................................

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 7 / 703
  ......................................................................................
  .....................
  ......................................................................................
  .............................................................................................................
 ..................................................................
Chapter 10 Watchdog Timer........................................................................................ 257
 ...............................................................................................................
  ..............................................................................................................
 ...........................................................................................
 ..................................................................................
  ...............................
 .......................................................................................................
 ................................................................................
 .......................................................................................
 ........................................................................
  .............................................................................
  ...................................................................
Chapter 11 A/D Converter ........................................................................................... 265
  .................................................................................................................
 .....................................................................................................
 .........................................................................................
  ....................................................................................
  ....................................................................................
  ....................................................................................
  .........................................................................
  ...................................................................
 ...........................................................................
 ............................................................................
  ..........................................
  ...........................................
  .................................
 ............................................
  ................................................................................................
  .....................................................................................................
 .......................................
 ...............................................
 .........................................
 .................................................
 .....................
 .................................
  ..........................
 ...................................
 ..............................
  ......................................
 ................................
 ........................................

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 8 / 703
Chapter 12 Universal Serial Communication Unit........................................................ 295
 ...............................................................................
  .................................
  ...........................................................................................................
 ................................................................
  ..............................................................................
 ..............................................................................................................................
  ....................................................
 ...........................................................
 ........................................................................................
  ......................................................................................
 ...........................................................................................
  ................................................
  ............................................................................................
 ............................................................................
 ...........................................................................................
 .......................................................................................
 .......................................................................................
 ........................................................................
  ...................................................................................
 .................................................................................................
  ......................................................................................
  .......................................................................................
  .....................................................................................
  ........................................
 .........................................................................................................................
 ................................................................................................
  .........................................................................................
  ................
 ..................................................................................................................
  .......................................................................................................................
 ...........................................................................................
 ....................................................................................................................
 ..........................................................................................................................
  ............................................................................................................
 ....................................................................................
 
.......................................................................................................................
 .............
 ....................................................................................................................
 ..........................................................................................................................
 .............................................................................................
 ..............................................................................
          
............................................................................................................................
 .....................................................................
 ...................................................................................................................

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 9 / 703
  ........................................................................................................................
 ......................................................................................................
  .........
  ......................................................................................................
  .......................................................................................................................
 .............................................................................................................................
  .........................
  ................................................................................................
  .....................................................................................................................
 ...........................................................................................................................
 .....................................................................................................
  .................................................................................................
 
...........................................................................................................................
Chapter 13 Serial Interface SPI ................................................................................... 459
 ..............................................................................................................
 .................................................................................................................................
  .............................................................................................................
 .........................................................................................
 .........................................................................................
 ...........................................................................................
 .............................................................................................
  .................................................................................................
  ........................................................................................
 ................................................................................................................................
  ..............................................................................................
  .......................................................................................................................
  ............................................................................................................
  .........................................................................................................................
Chapter 14 Serial interface IICA .................................................................................. 479
  ................................................................................................................................
 .................................................................................................
  ...................................................................................
 .........................................................................................
  ..........................................................................................
 ....................................................................................................
 ........................................................................................................
  ..........................................................................................
  .......................................................................
  .....................................................................
  ........................................................................
  .................................................................................................................
 ..............................................................................................................................
  .......................................
 ..........................................................................................
  .........................................................................................................................
 .....................................................................................................................................

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 10 / 703
 .......................................................................................
 ..................................................................................................................
 .........................................................................................................................
  ...........................................................................................................................................
  ............................................................................................................
 ..............................................
 ...................................................................................
  ....................................................................................................................
  .........................................................................................................................
 ..................................................................................................................................
  ......................................................................................................................
  .................................................................................................
 ...........................................................................................................................
 .........................................................................................................
  .............................................................
 ..................................................................................................................................
Chapter 15 IrDA........................................................................................................... 568
  ................................................................................................................................
 ......................................................................................................
 .........................................................................................
 ......................................................................................................
  ..............................................................................................................................
 ..................................................................................
 .............................................................................................................................
 ..................................................................................................................................
 ................................................................................................
 .......................................................................................................
Chapter 16 Enhanced DMA......................................................................................... 574
  .........................................................................................................................
 ...............................................................................................................................
  ...........................................................................................................
 ..............................................
 ..............................................................................................................
 ...............................................................................................................................
 .......................................................................................
  ...............................................................................
  ...........................................................................
 .....................................................................
 .........................................................
  .................................................................
 ...........................................................
  ........................................................................
  ..................................................................................
  ..................................................................................................................................
 .........................................................................................................................
  ............................................................................................................................

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 11 / 703
  ..........................................................................................................................
  ...........................................................................................................................
 ...........................................................................................................
  ................................................................
 ..................................
  .......................................................................................
 .............................................................................................................
  ............................................................................................................
  ......................................................................................................
Chapter 17 Linkage Controller (EVENTC)................................................................... 605
  ..........................................................................................................................
 ........................................................................................................................
 ................................................................................................................................
  ........................................................
 .......................................................................................................................
Chapter 18 Interrupt Function...................................................................................... 611
 .................................................................................................................
 ...........................................................................................................
  .............................................................................................
 ...........................................................................
  ..............................................................................
            
 .......................................................................................................................................
  .........................................................................................................
  .............................................................................
 ......................................................................
Chapter 19 Key Interrupt Function............................................................................... 623
  ...................................................................................................................
 ...................................................................................................................
  ...............................................................................................
 ...............................................................................................
 ..........................................................................................................
Chapter 20 Standby Function ...................................................................................... 627
  ...............................................................................................................................
  .......................................................................................................................................
 .........................................................................................................
 .............................................................................................................
  ..............................................................................................................................
 ..............................................................................................
 ....................................................................................................
Chapter 21 Reset Function.......................................................................................... 636
 ...........................................................................................
 ............................................................................................
Chapter 22 Power-On Reset Circuit............................................................................. 644
 .....................................................................................................

V1.2.2
CMS32L051 User Manual |Chapter 1 CPU
www.mcu.com.cn 12 / 703
 ....................................................................................................
 ...................................................................................................
Chapter 23 Voltage Detection Circuit........................................................................... 649
  .................................................................................................
 .................................................................................................
  .............................................................................
  .................................................................................................
 ...........................................................................................
  ...............................................................................................
  ...........................................................................................
  ......................................................................................
 ...........................................................................................
  ....................................................................................
Chapter 24 Security Features...................................................................................... 667
  ...........................................................................................................................................
  ................................................................................................
  .........................................................................................................
  ....................................................................
 ....................................................................................
 ..........................................................................................
  ............................................................................................................
  ...................................................................................................
 ........................................................................................................................
  .............................................
  .......................................................................................
Chapter 25 Temperature Sensor ................................................................................. 683
 ........................................................................................................
  .......................................................................................................
 ...............................................................
 ...............................................................
 ..............................................................................
 ........................................................................................
  .........................................................................................
Chapter 26 Option Byte ............................................................................................... 686
 ......................................................................................................................
 ......................................................................................
 .........................................................
  ................................................................................................................
  ....................................................................................
Chapter 27 FLASH Control.......................................................................................... 695
 ............................................................................................................
 .............................................................................................................
 ........................................................................................................
 .................................................................................
  ...................................................

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 ....................................................................................
 ...................................................................................................
 ..........................................................
 .............................................................
 ........................................................................
  .................................................................................................................
 ..............................................................................................................................
 .................................................................................................................................
  .................................................................................................
  .........................................................................................................................................
 ..........................................................................................................
Appendix Revision History.................................................................................................... 703

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Chapter 1 CPU
1.1 Overview
This section briefly introduces the features and debugging features of the ARM Cortex-M0+ core on this
product, please refer to the relevant ARM documentation for details.
1.2 Cortex-M0+ core features
⚫The ARM Cortex-M0+ processor is a 32-bit RISC core with 2-stage pipeline that only supports
privileged mode
⚫Single -cycle hardware multiplier
⚫Nested Vector Interrupt Controller (NVIC)
◼1 non-maskable interrupt (NMI)
◼Supports 32 maskable interrupt requests (IRQs)
◼4 interrupt priorities
⚫System Timer (SysTick) is a 24-bit countdown timer with a choice of fCLK or fIL counting clock
⚫Vector Table Offset Register (VTOR)
◼The software can write VTOR to relocate the vector table start address to a different location
◼The default value of this register is 0x0000_0000, the low 8 bits are ignored for writes, and
read to zero, which means that the offset is 256 bytes aligned.
1.3 Debugging features
⚫2-wire SWD debug interface
⚫Supports pause, resume, and stepping through programs
⚫Access the processor's core registers and special function registers
⚫4 hardware breakpoints (BPUs).
⚫Unlimited software breakpoints (BKPT instructions).
⚫2 Data observation points (DWTs).
⚫Memory is accessed while the kernel is executing.

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Figure 1-1 Debug block diagram of Cortex-M0+
Note: SWD does not work in deep sleep mode, please debug in active and sleep modes.
Bus matrix
Cortex
-
M0+
core
SW
-
DP
Bridge
NVIC
DWT
BPU
System bus
Cortex
-
M0+
debug support
MCU
debug support
SWDIO
SWCLK
DBGMCU
AHB
-
AP
Debug AP
AP

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1.4 SWD interface pin
The two GPIOs of this product can be used as SWD interface pins, which are present in all packages.
Table 1-1 SWD debug port pins
When the SWD function is not used, SWD can be disabled by setting the debug stop control register
(DBGSTOPCR).
Bit No.
31
30
29
28
27
26
25
24
DBGSTOPCR
-
-
-
-
-
-
-
SWDIS
default value
0
0
0
0
0
0
0
0
Bit No.
23
22
21
20
19
18
17
16
DBGSTOPCR
-
-
-
-
-
-
-
-
default value
0
0
0
0
0
0
0
0
Bit No.
15
14
13
12
11
10
9
8
DBGSTOPCR
-
-
-
-
-
-
-
-
default value
0
0
0
0
0
0
0
0
Bit No.
7
6
5
4
3
2
1
0
DBGSTOPCR
-
-
-
-
-
-
FRZEN1
FRZEN0
default value
0
0
0
0
0
0
0
0
SWDIS
SWD debug interface status
0
The SWD debug interface is enabled. P40 cannot be used as a GPIO when the debugger is
connected (because the ENO and DOUT of the IOBUF are controlled by the debugger at this time)
1
The SWD debug interface is disabled. The P40 can be used as a GPIO
FRZEN0
In the state where the debugger is connected and the CPU is in the debug state (HALTED=1), the
timer is peripheral module action/stop Note 1
0
Peripheral actions
1
Peripheral stops
FRZEN1
In the state where the debugger is connected and the CPU is in the debug state (HALTED=1), the
communication system peripheral module action/stop Note 2
0
Peripheral actions
1
Peripheral stops
Note 1: The timer peripheral modules of this product include: Timer4, a universal timer unit.
Note 2: The peripheral modules of the communication system of this product include: communication serial
communication unit, serial IICA.
SWD port name
Debugging capabilities
Pin assignment
SWCLK
Serial clock
P137
SWDIO
Serial data input/output
P40

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1.5 ARM reference document
The built-in debugging features in the Cortex®-M0+ kernel is part of the ARM® CoreSight design suite.
For related documents, please refer to:
⚫Cortex-M0®+ Technical Reference Manual (TRM)
⚫ARM® debug interface V5
⚫ARM® CoreSight Design Kit Version r1p1 Technical Reference Manual
⚫-M0+ Technical Reference Manual

V1.2.2
CMS32L051 User Manual |Chapter 2 Pin Function
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Chapter 2 Pin Function
2.1 Port function
Refer to the data sheets for each product family.
2.2 Port multiplexing function
Refer to the data sheets for each product family.

V1.2.2
CMS32L051 User Manual |Chapter 2 Pin Function
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2.3 Registers for controlling port functions
The port function is controlled through the following registers.
• Port Mode Register (PMxx)
• Port Register (Pxx)
• Pull-Up Resistor Selection Register (PUxx)
• Pull-Down Resistor Selection Register (PDxx)
• Port Output Mode Register (POMx)
• Port Mode Control Register (PMCxx)
• Port Set Control Register (PSETxx)
• Port Clear Control Register (PCLRxx)
• Port Output Multiplexing Function Configuration Register (PxxCFG).
• Port Input Multiplexing Function Configuration Register (TI10PCFG, TI11PCFG, TI12PCFG,
TI13PCFG, INTP0PCFG, INTP1PCFG, INTP2PCFG, INTP3PCFG, SDI00PCFG, SCLKI00PCFG,
SS00PCFG, SDI20PCFG, SCLKI20PCFG, SDAA0PCFG, SCLA0PCFG, RXD1PCFG).
• SPI Port Multiplexing Configuration Register (SPIPCFG)
Note: Assigned registers and bits vary from product to product. For the registers and bits assigned by each product, refer to
Table 2-1. The initial value must be set for the unassigned bits.
Table 2-1 Registers assigned to each product PMxx, Pxx, PSETxx, PCLRxx, PUxx, PDxx, POMxx,
PMCxx and their bits (1/2)
port
Bit name
48
Pins
40
Pins
32
Pins
24
Pins
20
Pins
PMxx
register
Pxx
register
PSETxx
register
PCLRxx
register
PUxx
register
PDxx
register
POMxx
register
PMCxx
register
Port 0
0
PM00
P00
PSET00
PCLR00
PU00
PD00
POM00
PMC00
○
○
○


1
PM01
P01
PSET01
PCLR01
PU01
PD01
POM01
PMC01
○
○
○


Port 1
0
PM10
P10
PSET10
PCLR10
PU10
PD10
POM10
PMC10
○
○
○
○
○
1
PM11
P11
PSET11
PCLR11
PU11
PD11
POM11
PMC11
○
○
○
○
○
2
PM12
P12
PSET12
PCLR12
PU12
PD12
POM12
PMC12
○
○
○
○
○
3
PM13
P13
PSET13
PCLR13
PU13
PD13
POM13
PMC13
○
○
○
○
○
4
PM14
P14
PSET14
PCLR14
PU14
PD14
POM14
PMC14
○
○
○
○
○
5
PM15
P15
PSET15
PCLR15
PU15
PD15
POM15
PMC15
○
○
○
○

6
PM16
P16
PSET16
PCLR16
PU16
PD16
POM16
PMC16
○
○
○


7
PM17
P17
PSET17
PCLR17
PU17
PD17
POM17
PMC17
○
○
○


Port 2
0
PM20
P20
PSET20
PCLR20
PU20
PD20
POM20
PMC20
○
○
○
○
○
1
PM21
P21
PSET21
PCLR21
PU21
PD21
POM21
PMC21
○
○
○
○
○
2
PM22
P22
PSET22
PCLR22
PU22
PD22
POM22
PMC22
○
○
○
○
○
3
PM23
P23
PSET23
PCLR23
PU23
PD23
POM23
PMC23
○
○
○
○
○
4
PM24
P24
PSET24
PCLR24
PU24
PD24
POM24
PMC24
○
○

○

5
PM25
P25
PSET25
PCLR25
PU25
PD25
POM25
PMC25
○
○



6
PM26
P26
PSET26
PCLR26
PU26
PD26
POM26
PMC26
○




7
PM27
P27
PSET27
PCLR27
PU27
PD27
POM27
PMC27
○




Note 1.(-A) is limited to CMS32L051xx-A series products.

V1.2.2
CMS32L051 User Manual |Chapter 2 Pin Function
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Table 2-1 Registers assigned to each product PMxx, Pxx, PSETxx, PCLRxx, PUxx, PDxx, POMxx, PMCxx
and their bits (2/2)
port
Bit name
48
Pins
40
Pins
32
Pins
24
Pins
20
Pins
PMxx
register
Pxx
registe
r
PSETxx
register
PCLRxx
register
PUxx
register
PDxx
register
POMxx
register
PMCxx
register
Port 3
0
PM30
P30
PSET30
PCLR30
PU30
PD30
POM30
PMC30
○
○
○


1
PM31
P31
PSET31
PCLR31
PU31
PD30
POM31
PMC31
○
○
○


Port 4
0
PM40
P40
PSET40
PCLR40
PU40

POM40

○
○
○
○
○
1
PM41
P41
PSET41
PCLR41
PU41

POM41

○




Port 5
0
PM50
P50
PSET50
PCLR50
PU50
PD50
POM50
PMC50
○
○
○


1
PM51
P51
PSET51
PCLR51
PU51
PD51
POM51
PMC51
○
○
○


Port 6
0
PM60
P60
PSET60
PCLR60
PU60Note2
PD60Note2
POM60Note 2
PMC60
Note 2
○
○



1
PM61
P61
PSET61
PCLR61
PU61Note2
PD61Note2
POM61Note 2
PMC61
Note 2
○
○



2
PM62
P62
PSET62
PCLR62
PU62
PD62
POM62
PMC62
○




3
PM63
P63
PSET63
PCLR63
PU63
PD63
POM63
PMC63
○




Port 7
0
PM70
P70
PSET70
PCLR70
PU70
PD70
POM70
PMC70
○
○
○
○

1
PM71
P71
PSET71
PCLR71
PU71
PD71
POM71
PMC71
○


○

2
PM72
P72
PSET72
PCLR72
PU72
PD72
POM72
PMC72
○
○
○
○

3
PM73
P73
PSET73
PCLR73
PU73
PD73
POM73
PMC73
○
○
○
○

4
PM74
P74
PSET74
PCLR74
PU74
PD74
POM74
PMC74
○
○
○
○

5
PM75
P75
PSET75
PCLR75
PU75
PD75
POM75
PMC75
○
○

○

Port 12
0
PM120
P120
PSET120
PCLR120
PU120
PD120
POM120
PMC120
○
○
○


1
PM121
P121
PSET121
PCLR121




○
○
○
○
○
2
PM122
P122
PSET122
PCLR122




○
○
○
○
○
3
PM123
P123
PSET123
PCLR123




○
○


○
4
PM124
P124
PSET124
PCLR124




○
○


○
Port 13
0
PM130
P130
PSET130
PCLR130
PU130
PD130
POM130
PMC130
○




6
PM136
P136
PSET136
PCLR136
PU136
PD136
POM136
PMC136
○
○
○

○
7
PM137
P137
PSET137
PCLR137
PU137

POM137

○
○
○
○
○
Port 14
0
PM140
P140
PSET140
PCLR140
PU140
PD140
POM140
PMC140
○
○



6
PM146
P146
PSET146
PCLR146
PU146
PD146
POM146
PMC146
○




7
PM147
P147
PSET147
PCLR147
PU147
PD147
POM147
PMC147
○
○
○


Note: 1. (-A) indicates that it is limited to CMS32L051xx-A series products.
2. It is limited to CMS32L051xx-S series products. For products other than the CMS32L051xx-S series, ports P60,
P61 are dedicated N-channel open drain output ports, which do not need to be configured with POM registers and
do not have their own pull-up and pull-down functions and must be used with external pull-up resistors, and can
only be used as digital pins.