Holtek BS66F340 User manual

Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350
BS66F360/BS66F370
Revision: V1.60 Date: August 20, 2019

Rev. 1.60 2 August 20, 2019 Rev. 1.60 3 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Table of Contents
Features............................................................................................................ 7
CPU Features ......................................................................................................................... 7
Peripheral Features................................................................................................................. 7
General Description......................................................................................... 8
Selection Table................................................................................................. 8
Block Diagram.................................................................................................. 9
Pin Assignment................................................................................................ 9
Pin Descriptions ............................................................................................ 14
Absolute Maximum Ratings.......................................................................... 28
D.C. Characteristics....................................................................................... 28
A.C. Characteristics....................................................................................... 30
A/D Converter Characteristics...................................................................... 31
Temperature Sensor Electrical Characteristics .......................................... 31
LVD/LVR Electrical Characteristics.............................................................. 32
Touch Key Electrical Characteristics........................................................... 32
Power-on Reset Characteristics................................................................... 34
System Architecture...................................................................................... 35
Clocking and Pipelining......................................................................................................... 35
Program Counter................................................................................................................... 36
Stack ..................................................................................................................................... 37
Arithmetic and Logic Unit – ALU ........................................................................................... 37
Flash Program Memory................................................................................. 38
Structure................................................................................................................................ 38
Special Vectors ..................................................................................................................... 38
Look-up Table........................................................................................................................ 39
Table Program Example........................................................................................................ 39
In Circuit Programming – ICP ............................................................................................... 40
On-Chip Debug Support – OCDS ......................................................................................... 41
In Application Programming – IAP ........................................................................................ 41
Data Memory .................................................................................................. 52
Structure................................................................................................................................ 52
Data Memory Addressing...................................................................................................... 53
General Purpose Data Memory ............................................................................................ 53
Special Purpose Data Memory ............................................................................................. 53
Special Function Register Description........................................................ 58
Indirect Addressing Registers – IAR0, IAR1, IAR2 ............................................................... 58
Memory Pointers – MP0, MP1H/MP1L, MP2H/MP2L........................................................... 58

Rev. 1.60 2 August 20, 2019 Rev. 1.60 3 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Program Memory Bank Pointer – PBP.................................................................................. 60
Accumulator – ACC............................................................................................................... 60
Program Counter Low Register – PCL.................................................................................. 60
Look-up Table Registers – TBLP, TBHP, TBLH..................................................................... 61
Status Register – STATUS.................................................................................................... 61
EEPROM Data Memory.................................................................................. 63
EEPROM Data Memory Structure ........................................................................................ 63
EEPROM Registers .............................................................................................................. 63
Reading Data from the EEPROM ......................................................................................... 65
Writing Data to the EEPROM................................................................................................ 65
Write Protection..................................................................................................................... 65
EEPROM Interrupt ................................................................................................................ 65
Programming Considerations................................................................................................ 66
Oscillators ...................................................................................................... 67
Oscillator Overview ............................................................................................................... 67
System Clock Congurations................................................................................................ 67
External Crystal/Ceramic Oscillator – HXT ........................................................................... 68
Internal High Speed RC Oscillator – HIRC ........................................................................... 69
External 32.768 kHz Crystal Oscillator – LXT ....................................................................... 69
Internal 32kHz Oscillator – LIRC........................................................................................... 70
Operating Modes and System Clocks ......................................................... 70
System Clocks ...................................................................................................................... 70
System Operation Modes...................................................................................................... 71
Control Registers .................................................................................................................. 72
Operating Mode Switching .................................................................................................... 75
Standby Current Considerations ........................................................................................... 79
Wake-up................................................................................................................................ 79
Watchdog Timer............................................................................................. 80
Watchdog Timer Clock Source.............................................................................................. 80
Watchdog Timer Control Register ......................................................................................... 80
Watchdog Timer Operation ................................................................................................... 81
Reset and Initialisation.................................................................................. 82
Reset Functions .................................................................................................................... 82
Reset Initial Conditions ......................................................................................................... 85
Input/Output Ports ......................................................................................... 91
Pull-high Resistors ................................................................................................................ 93
Port A Wake-up ..................................................................................................................... 93
I/O Port Control Registers ..................................................................................................... 93
I/O Port Source Current Control............................................................................................ 94
Pin-shared Functions ............................................................................................................ 95
I/O Pin Structures................................................................................................................ 104
Programming Considerations.............................................................................................. 105

Rev. 1.60 4 August 20, 2019 Rev. 1.60 5 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Timer Modules – TM .................................................................................... 106
Introduction ......................................................................................................................... 106
TM Operation ...................................................................................................................... 106
TM Clock Source................................................................................................................. 106
TM Interrupts....................................................................................................................... 107
TM External Pins................................................................................................................. 107
TM Input/Output Pin Selection ............................................................................................ 107
Programming Considerations.............................................................................................. 108
Compact Type TM – CTM ............................................................................ 109
Compact TM Operation....................................................................................................... 109
Compact Type TM Register Description...............................................................................110
Compact Type TM Operation Modes ...................................................................................113
Standard Type TM – STM .............................................................................119
Standard TM Operation........................................................................................................119
Standard Type TM Register Description ............................................................................. 120
Standard Type TM Operation Modes .................................................................................. 123
Periodic Type TM – PTM.............................................................................. 132
Periodic TM Operation ........................................................................................................ 132
Periodic Type TM Register Description ............................................................................... 133
Periodic Type TM Operation Modes.................................................................................... 136
Analog to Digital Converter ........................................................................ 145
A/D Converter Overview ..................................................................................................... 145
Registers Descriptions ........................................................................................................ 146
A/D Converter Operation..................................................................................................... 150
A/D Converter Reference Voltage....................................................................................... 151
A/D Converter Input Pins .................................................................................................... 152
Conversion Rate and Timing Diagram ................................................................................ 152
Summary of A/D Conversion Steps..................................................................................... 153
Programming Considerations.............................................................................................. 153
A/D Converter Transfer Function ........................................................................................ 153
A/D Programming Examples............................................................................................... 154
Serial Interface Module – SIM ..................................................................... 156
SPI Interface ....................................................................................................................... 156
I2C Interface ........................................................................................................................ 162
UART Interface............................................................................................. 171
UART External Pin .............................................................................................................. 172
UART Data Transfer Scheme.............................................................................................. 172
UART Status and Control Registers.................................................................................... 172
Baud Rate Generator .......................................................................................................... 178
UART Setup and Control..................................................................................................... 179
UART Transmitter................................................................................................................ 180
UART Receiver ................................................................................................................... 181
Managing Receiver Errors .................................................................................................. 183

Rev. 1.60 4 August 20, 2019 Rev. 1.60 5 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
UART Interrupt Structure..................................................................................................... 184
UART Power Down and Wake-up....................................................................................... 185
Touch Key Function .................................................................................... 186
Touch Key Structure............................................................................................................ 186
Touch Key Register Denition............................................................................................. 187
Touch Key Operation........................................................................................................... 193
Touch Key Interrupt ............................................................................................................. 199
Progrsmming Considerations.............................................................................................. 199
Low Voltage Detector – LVD ....................................................................... 200
LVD Register ....................................................................................................................... 200
LVD Operation..................................................................................................................... 201
Interrupts ...................................................................................................... 202
Interrupt Registers............................................................................................................... 202
Interrupt Operation .............................................................................................................. 207
External Interrupt................................................................................................................. 208
Touch Key Interrupt ............................................................................................................. 209
UART Transfer Interrupt...................................................................................................... 209
A/D Converter Interrupt ....................................................................................................... 209
Multi-function Interrupt ........................................................................................................ 209
Time Base Interrupt............................................................................................................. 210
Serial Interface Module Interrupt..........................................................................................211
LVD Interrupt ....................................................................................................................... 212
EEPROM Interrupt .............................................................................................................. 212
TM Interrupt......................................................................................................................... 212
Programming Considerations.............................................................................................. 213
Application Circuits..................................................................................... 214
Instruction Set.............................................................................................. 215
Introduction ......................................................................................................................... 215
Instruction Timing ................................................................................................................ 215
Moving and Transferring Data............................................................................................. 215
Arithmetic Operations.......................................................................................................... 215
Logical and Rotate Operation ............................................................................................. 216
Branches and Control Transfer ........................................................................................... 216
Bit Operations ..................................................................................................................... 216
Table Read Operations ....................................................................................................... 216
Other Operations................................................................................................................. 216
Instruction Set Summary ............................................................................ 217
Table Conventions............................................................................................................... 217
Extended Instruction Set ..................................................................................................... 219
Instruction Denition................................................................................... 221
Extended Instruction Denition ........................................................................................... 230

Rev. 1.60 6 August 20, 2019 Rev. 1.60 7 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Package Information ................................................................................... 237
28-pin SSOP (150mil) Outline Dimensions ......................................................................... 238
44-pin LQFP (10mm×10mm) (FP2.0mm) Outline Dimensions ........................................... 239
48-pin LQFP (7mm×7mm) Outline Dimensions .................................................................. 240
64-pin LQFP (7mm×7mm) Outline Dimensions .................................................................. 241

Rev. 1.60 6 August 20, 2019 Rev. 1.60 7 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Features
CPU Features
• Operating voltage
♦fSYS= 8MHz: 2.2V~5.5V
♦fSYS=12MHz: 2.7V~5.5V
♦fSYS=16MHz: 3.3V~5.5V
• Up to 0.25μs instruction cycle with 16MHz system clock at VDD=5V
• Power down and wake-up functions to reduce power consumption
• Oscillator type
♦External High Speed Crystal – HXT
♦Internal High Speed RC – HIRC
♦External 32.768kHz Crystal – LXT
♦Internal 32kHz RC – LIRC
• Fully integrated internal 8/12/16MHz oscillator requires no external components
• Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
• All instructions executed in one to three instruction cycles
• Table read instructions
• 115 powerful instructions
• Up to 16-level subroutine nesting
• Bit manipulation instruction
Peripheral Features
• Program Memory: Up to 32K×16
• Data Memory: Up to 1536×8
• True EEPROM Memory: 128×8
• Fully integrated touch key functions – require no external components
• Watchdog Timer function
• Up to 60 bidirectional I/O lines
• Two external interrupt lines shared with I/O pins
• Multiple Timer Modules for time measure, input capture, compare match output, PWM output
function or single pulse output function
• Serial Interfaces Module – SIM for SPI or I2C
• Fully-duplex Universal Asynchronous Receiver and Transmitter Interface – UART
• Programming I/O source current
• Dual Time-Base functions for generation of xed time interrupt signals
• 8-channel 12-bit resolution A/D converter
• Temperature Sensor
• In Application Programming function – IAP
• Low voltage reset function
• Low voltage detect function
• Flash program memory can be re-programmed up to 100,000 times
• Flash program memory data retention > 10 years
• True EEPROM data memory can be re-programmed up to 1,000,000 times
• True EEPROM data memory data retention > 10 years
• Wide range of available package types

Rev. 1.60 8 August 20, 2019 Rev. 1.60 9 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
General Description
The series of devices are Flash Memory A/D type 8-bit high performance RISC architecture
microcontroller with fully integrated touch key functions. With all touch key functions provided
internally and with the convenience of Flash Memory multi-programming features, each device has
all the features to offer designers a reliable and easy means of implementing Touch Keyes within
their products applications.
The touch key functions are fully integrated completely eliminating the need for external
components. In addition to the ash program memory, other memory includes an area of RAM Data
Memory as well as an area of true EEPROM memory for storage of non-volatile data such as serial
numbers, calibration data, etc. Analog features include a multi-channel 12-bit A/D converter with
temperature sensor. Protective features such as an internal Watchdog Timer and Low Voltage Reset
functions coupled with excellent noise immunity and ESD protection ensure that reliable operation
is maintained in hostile electrical environments.
These devices also include fully integrated low and high speed oscillators which are exibly used for
different applications. The ability to operate and switch dynamically between a range of operating
modes using different clock sources gives users the ability to optimise microcontroller operation
and minimise power consumption. Easy communication with the outside world is provided using
the internal UART, I2C and SPI interfaces, while the inclusion of exible I/O programming features,
Timer modules and many other features further enhance device functionality and exibility.
The touch key devices will nd excellent use in a huge range of modern Touch Key product applications
such as instrumentation, household appliances, electronically controlled tools to name but a few.
Selection Table
Most features are common to all devices. The main features distinguishing them are Memory
capacity, I/O count, Touch Module and key mumber, stack capacity and package types. The
following table summarises the main features of each device.
Part No. Program
Memory
Data
Memory
Data
EEPROM I/O A/D Temp. Sensor
Time
Base
BS66F340 4k×16 512×8 128×8 26 12-bit×8 √2
BS66F350 8k×16 768×8 128×8 40 12-bit×8 √2
BS66F360 16k×16 1024×8 128×8 46 12-bit×8 √2
BS66F370 32K×16 1536×8 128×8 60 12-bit×8 √2
Part No. Timer Module Touch
Module
Touch
Key SIM UART Stacks Package
BS66F340
10-bit CTM×2
10-bit PTM×1
16-bit STM×1
3 12 √ √ 8 28SSOP
BS66F350
10-bit CTM×2
10-bit PTM×1
16-bit STM×1
5 20 √ √ 8 44/48LQFP
BS66F360
10-bit CTM×2
10-bit PTM×1
16-bit STM×1
7 28 √ √ 12 44/48LQFP
BS66F370
10-bit CTM×2
10-bit PTM×1
16-bit STM×1
9 36 √ √ 16 44/48/64LQFP
Note: As devices exist in more than one package format, the table reflects the situation for the
package with the most pins.

Rev. 1.60 8 August 20, 2019 Rev. 1.60 9 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Block Diagram
8-bit
RISC
MCU
Core
I/O Timer
Modules
Flash
Program
Memory
EEPROM
Data
Memory
Flash/EEPROM
Programming Circuitry
Time
Base
SIM
(SPI/I2C)
Low
Voltage
Reset
Watchdog
Timer
Low
Voltage
Detect
Interrupt
Controller
Reset
Circuit
External
HXT
Oscillator
12-bit A/D
Converter
RAM
Data
Memory
IAP
UART
Internal
HIRC/LIRC
Oscillators
Temperature
Sensor
Touch Key
Modules
External
LXT
Oscillator
Pin Assignment
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PE4/OSC1
PE5/CTP1B/OSC2
PB7/INT1/KEY4/AN7
PB6/PTCK/KEY3/AN6
PB5/STCK/KEY2/AN5
PB4/PTPI/PTPB/KEY1/AN4
PA4/SDO/XT2
VSS
VDD
PB0/SDI/SDA/VREF/AN0
PB1/SCK/SCL/AN1
PB2/PTPI/TX/PTP/AN2
PA3/SCS/XT1
PB3/RX/AN3
PC0/KEY5
PC1/KEY6
PC3/KEY8
PC2/KEY7
PE0/KEY9
PA7/CTP1
PE3/STPI/STPB/KEY12
PE2/STPI/STP/KEY11
PA0/SDO/ICPDA/OCDSDA
PA1/CTP0
PA5/CTP0B
PA6/CTCK0/INT0
PE1/KEY10
PA2/CTCK1/SCS/ICPCK/OCDSCK
BS66F340/BS66V340
28 SSOP-A

Rev. 1.60 10 August 20, 2019 Rev. 1.60 11 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F350/BS66V350
44 LQFP-A
1
2
3
4
5
6
7
8
9
10
11
12 13 14 15 16 17 18 19 20 21 22
23
24
25
26
27
28
29
30
31
32
33
3435363738394041424344
PE5/CTCK1/OSC2
PE4/OSC1
PE7/CTP1B
PE6/CTP1
PA1/CTP0
PA5/CTP0B
PA6/CTCK0/INT0
PA7
PD3/KEY16 PD2/KEY15 PD1/KEY14
PA0/SDO/ICPDA/OCDSDA
VSS
PA4/SDO/XT2
PA3/SCS/XT1
VDD
PB3/RX/AN3
PB0/SDI/SDA/VREF/AN0
PB1/SCK/SCL/AN1
PB2/PTPI/TX/PTP/AN2
PB7/INT1/KEY4/AN7
PB6/PTCK/KEY3/AN6
PB5/STCK/KEY2/AN5
PB4/PTPI/PTPB/KEY1/AN4
PD5/KEY18 PD4/KEY17 PD6/KEY19 PE1 PE3/STPI/STPB PE2/STPI/STP
PA2/SCS/ICPCK/OCDSCK
NC
NC
NC
NC
NC
PE0 PD7/KEY20
PC7/KEY12
PC6/KEY11
PC5/KEY10
PC4/KEY9
PC3/KEY8
PC2/KEY7
BS66F350/BS66V350
48 LQFP-A
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
45
464748 3738394041424344
PE5/CTCK1/OSC2
PE4/OSC1
PE7/CTP1B
PE6/CTP1
PA1/CTP0
PA5/CTP0B
PA6/CTCK0/INT0
PA7
PD3/KEY16 PD2/KEY15 PD1/KEY14 PD0/KEY13
PA0/SDO/ICPDA/OCDSDA
VSS
PA4/SDO/XT2
PA3/SCS/XT1
VDD
PB3/RX/AN3
PB0/SDI/SDA/VREF/AN0
PB1/SCK/SCL/AN1
PB2/PTPI/TX/PTP/AN2
PB7/INT1/KEY4/AN7
PB6/PTCK/KEY3/AN6
PB5/STCK/KEY2/AN5
PB4/PTPI/PTPB/KEY1/AN4
PD5/KEY18 PD4/KEY17 PD6/KEY19 PE1 PE3/STPI/STPB PE2/STPI/STP PE0
PA2/SCS/ICPCK/OCDSCK
NC
NC
NC
NC
NC
NC
PD7/KEY20
PC3/KEY8
PC2/KEY7
PC1/KEY6
PC0/KEY5
PC5/KEY10
PC4/KEY9
PC6/KEY11
PC7/KEY12

Rev. 1.60 10 August 20, 2019 Rev. 1.60 11 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F360/BS66V360
44 LQFP-A
1
2
3
4
5
6
7
8
9
10
11
12 13 14 15 16 17 18 19 20 21 22
23
24
25
26
27
28
29
30
31
32
33
3435363738394041424344
PE5/CTCK1/OSC2
PE4/OSC1
PE7/CTP1B/KEY26
PE6/CTP1/KEY25
PA1/CTP0
PA5/CTP0B
PA6/CTCK0/INT0
PA7
PD3/KEY16 PD2/KEY15 PD1/KEY14
PA0/SDO/ICPDA/OCDSDA
VSS
PA4/SDO/XT2
PA3/SCS/XT1
VDD
PB3/RX/AN3
PB0/SDI/SDA/VREF/AN0
PB1/SCK/SCL/AN1
PB2/PTPI/TX/PTP/AN2
PB7/INT1/KEY4/AN7
PB6/PTCK/KEY3/AN6
PB5/STCK/KEY2/AN5
PB4/PTPI/PTPB/KEY1/AN4
PD5/KEY18 PD4/KEY17 PD6/KEY19 PE1 PE3/STPI/STPB/KEY24 PE2/STPI/STP/KEY23
PA2/SCS/ICPCK/OCDSCK
PF5
PF3
PF2
PF1/KEY28
PF0/KEY27
PE0 PD7/KEY20
PC7/KEY12
PC6/KEY11
PC5/KEY10
PC4/KEY9
PC3/KEY8
PC2/KEY7
BS66F360/BS66V360
48 LQFP-A
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
45
464748 3738394041424344
PE5/CTCK1/OSC2
PE4/OSC1
PE7/CTP1B/KEY26
PE6/CTP1/KEY25
PA1/CTP0
PA5/CTP0B
PA6/CTCK0/INT0
PA7
PD3/KEY16 PD2/KEY15 PD1/KEY14 PD0/KEY13
PA0/SDO/ICPDA/OCDSDA
VSS
PA4/SDO/XT2
PA3/SCS/XT1
VDD
PB3/RX/AN3
PB0/SDI/SDA/VREF/AN0
PB1/SCK/SCL/AN1
PB2/PTPI/TX/PTP/AN2
PB7/INT1/KEY4/AN7
PB6/PTCK/KEY3/AN6
PB5/STCK/KEY2/AN5
PB4/PTPI/PTPB/KEY1/AN4
PD5/KEY18 PD4/KEY17 PD6/KEY19 PE1/KEY22 PE3/STPI/STPB/KEY24 PE2/STPI/STP/KEY23 PE0/KEY21
PA2/SCS/ICPCK/OCDSCK
PF5
PF4
PF3
PF2
PF1/KEY28
PF0/KEY27
PD7/KEY20
PC3/KEY8
PC2/KEY7
PC1/KEY6
PC0/KEY5
PC5/KEY10
PC4/KEY9
PC6/KEY11
PC7/KEY12

Rev. 1.60 12 August 20, 2019 Rev. 1.60 13 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F370/BS66V370
44 LQFP-A
1
2
3
4
5
6
7
8
9
10
11
12 13 14 15 16 17 18 19 20 21 22
23
24
25
26
27
28
29
30
31
32
33
3435363738394041424344
PE5/CTCK1/OSC2
PE4/OSC1
PE7/CTP1B/KEY26
PE6/CTP1/KEY25
PA1/CTP0
PA5/CTP0B
PA6/CTCK0/INT0
PA7
PD3/KEY16 PD2/KEY15 PD1/KEY14
VSS
PA4/SDO/XT2
PA3/SCS/XT1
VDD
PB3/RX/AN3
PB0/VREF/SDI/SDA/AN0
PB1/SCK/SCL/AN1
PB2/PTP/PTPI/TX/AN2
PB7/INT1/AN7/KEY4
PB6/PTCK/AN6/KEY3
PB5/STCK/AN5/KEY2
PB4/PTPB/PTPI/AN4/KEY1
PD5/KEY18 PD4/KEY17 PD6/KEY19 PE1/KEY22 PE3/STPB/STPI/KEY24 PE2/STP/STPI/KEY23
PF5
PF3
PF2
PF1/KEY28
PF0/KEY27
PE0/KEY21 PD7/KEY20
PC7/KEY12
PC6/KEY11
PC5/KEY10
PC4/KEY9
PC3/KEY8
PC2/KEY7
PA0/SDO/ICPDA/OCDSDA
PA2/SCS/ICPCK/OCDSCK
BS66F370/BS66V370
48 LQFP-A
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
45
464748 3738394041424344
PE5/CTCK1/OSC2
PE4/OSC1
PE7/CTP1B/KEY26
PE6/CTP1/KEY25
PA1/CTP0
PA5/CTP0B
PA6/CTCK0/INT0
PA7
PD3/KEY16 PD2/KEY15 PD1/KEY14 PD0/KEY13
PA0/SDO/ICPDA/OCDSDA
VSS
PA4/SDO/XT2
PA3/SCS/XT1
VDD
PB3/RX/AN3
PB1/SCK/SCL/AN1
PB2/PTP/PTPI/TX/AN2
PB7/INT1/AN7/KEY4
PB6/PTCK/AN6/KEY3
PB5/STCK/AN5/KEY2
PB4/PTPB/PTPI/AN4/KEY1
PD5/KEY18 PD4/KEY17 PD6/KEY19 PE1/KEY22 PE3/STPB/STPI/KEY24 PE2/STP/STPI/KEY23 PE0/KEY21
PA2/SCS/ICPCK/OCDSCK
PF5
PF4
PF3
PF2
PF1/KEY28
PF0/KEY27
PD7/KEY20
PC3/KEY8
PC2/KEY7
PC1/KEY6
PC0/KEY5
PC5/KEY10
PC4/KEY9
PC6/KEY11
PC7/KEY12
PB0/VREF/SDI/SDA/AN0

Rev. 1.60 12 August 20, 2019 Rev. 1.60 13 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F370/BS66V370
64 LQFP-A
1
2
3
4
5
6
7
8
9
10
11
12
13
20 21 22 23 24 25 26 27 28
6061626364
29 30 31 32
5253545556575859
14
15
16
43
44
45
46
47
48
36
37
38
39
40
41
42
33
34
35
17 18 19
495051
PF2
PF3
PF5
PA1/CTP0
PF4
PA5/CTP0B
PA6/CTCK0/INT0
PA7
PD5/KEY18 PD4/KEY17 PD6/KEY19 PD7/KEY20
PE1/KEY22
PE0/KEY21
PH1
PH2
PH0
PH3
PH5
PH4
PG0/KEY29 PG1/KEY30
PG7/KEY36
PG6/KEY35 PG5/KEY34
PG4/KEY33
PG3/KEY32
PG2/KEY31
PA2/SCS/ICPCK/OCDSCK
PA0/SDO/ICPDA/OCDSDA
PA4/SDO/XT2
PA3/SCS/XT1
VSS
VDD
PE5/CTCK1/OSC2
PE4/OSC1
PB3/RX/AN3
PB2/PTP/PTPI/TX/AN2
PB0/VREF/SDI/SDA/AN0
PB1/SCK/SCL/AN1
VSS1
VDD1
PC3/KEY8
PC2/KEY7
PC1/KEY6
PC0/KEY5
PC7/KEY12
PC6/KEY11
PC5/KEY10
PC4/KEY9
PB4/PTPB/PTPI/AN4/KEY1
PB5/STCK/AN5/KEY2
PB7/INT1/AN7/KEY4
PB6/PTCK/AN6/KEY3
PE3/STPB/STPI/KEY24
PE2/STP/STPI/KEY23
PF1/KEY28
PF0/KEY27
PE7/CTP1B/KEY26
PE6/CTP1/KEY25
PD3/KEY16 PD2/KEY15
PD1/KEY14
PD0/KEY13
Note: 1. The OCDSDA and OCDSCK pins are the OCDS dedicated pins and only available for the BS66V3x0 device
which is the OCDS EV chip for the BS66F3x0 device.
2. For less pin-count package types there will be unbonded pins which should be properly congured to
avoid unwanted current consumption resulting from floating input conditions. Refer to the “Standby
Current Considerations” and “Input/Output Ports” sections.

Rev. 1.60 14 August 20, 2019 Rev. 1.60 15 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Pin Descriptions
With the exception of the power pins and some relevant transformer control pins, all pins on these
devices can be referenced by their Port name, e.g. PA0, PA1 etc, which refer to the digital I/O
function of the pins. However these Port pins are also shared with other function such as the Analog
to Digital Converter, Timer Module pins etc. The function of each pin is listed in the following table,
however the details behind how each pin is congured is contained in other sections of the datasheet.
As the Pin Description table shows the situation for the package with the most pins, not all pins in
the table will be available on smaller package sizes.
BS66F340
Pad Name Function OPT I/T O/T Description
PA0/SDO/
ICPDA/
OCDSDA
PA0
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SDO PAS0 — CMOS SPI data output
ICPDA — ST CMOS ICP Data/Address pin
OCDSDA — ST CMOS OCDS Data/Address pin, for EV chip only.
PA1/CTP0 PA1
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTP0 PAS0 — CMOS CTM0 output
PA2/CTCK1/
SCS/ ICPCK/
OCDSCK
PA2
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTCK1 PAS0 ST — CTM1 clock input
SCS PAS0
IFS ST CMOS SPI slave select
ICPCK — ST CMOS ICP Clock pin
OCDSCK — ST — OCDS Clock pin, for EV chip only.
PA3/SCS/
XT1
PA3
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SCS PAS0
IFS ST CMOS SPI slave select
XT1 PAS0 LXT — LXT oscillator pin
PA4/SDO/
XT2
PA4
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SDO PAS1 — CMOS SPI data output
XT2 PAS1 — LXT LXT oscillator pin
PA5/CTP0B PA5
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTP0B PAS1 — CMOS CTM0 inverted output
PA6/CTCK0/
INT0
PA6
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTCK0 PAS1 ST — CTM0 clock input
INT0
PAS1
INTEG
INTC0
ST — External Interrupt 0

Rev. 1.60 14 August 20, 2019 Rev. 1.60 15 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Pad Name Function OPT I/T O/T Description
PA7/CTP1 PA7
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTP1 PAS1 — CMOS CTM1 output
PB0/SDI/
SDA/VREF/
AN0
PB0 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up.
SDI PBS0 ST — SPI data input
SDA PBS0 ST NMOS I2C data line
VREF PBS0 — AN A/D Converter reference voltage output
AN0 PBS0 AN — A/D Converter analog input
PB1/SCK/
SCL/AN1
PB1 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up.
SCK PBS0 ST CMOS SPI serial clock
SCL PBS0 ST NMOS I2C clock line
AN1 PBS0 AN — A/D Converter analog input
PB2/PTPI/
TX/PTP/AN2
PB2 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up.
PTPI PBS0
IFS ST — PTM capture input
TX PBS0 — CMOS UART TX serial data output
PTP PBS0 — CMOS PTM output
AN2 PBS0 AN — A/D Converter analog input
PB3/RX/AN3
PB3 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up.
RX PBS0 ST — UART RX serial data input
AN3 PBS0 AN — A/D Converter analog input
PB4/PTPI/
PTPB/KEY1/
AN4
PB4 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up.
PTPI PBS1
IFS ST — PTM capture input
PTPB PBS1 — CMOS PTM inverted output
KEY1 PBS1 AN — Touch key input
AN4 PBS1 AN — A/D Converter analog input
PB5/STCK/
KEY2/AN5
PB5 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up.
STCK PBS1 ST — STM clock input
KEY2 PBS1 AN — Touch key input
AN5 PBS1 AN — A/D Converter analog input
PB6/PTCK/
KEY3/AN6
PB6 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up.
PTCK PBS1 ST — PTM clock input
KEY3 PBS1 AN — Touch key input
AN6 PBS1 AN — A/D Converter analog input
PB7/INT1/
KEY4/AN7
PB7 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up.
INT1
PBS1
INTEG
INTC0
ST — External Interrupt 1
KEY4 PBS1 AN — Touch key input
AN7 PBS1 AN — A/D Converter analog input

Rev. 1.60 16 August 20, 2019 Rev. 1.60 17 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Pad Name Function OPT I/T O/T Description
PC0/KEY5 PC0 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY5 PCS0 AN — Touch key input
PC1/KEY6 PC1 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY6 PCS0 AN — Touch key input
PC2/KEY7 PC2 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY7 PCS0 AN — Touch key input
PC3/KEY8 PC3 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY8 PCS0 AN — Touch key input
PE0/KEY9 PE0 PEPU
PES0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY9 PES0 AN — Touch key input
PE1/KEY10 PE1 PEPU
PES0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY10 PES0 AN — Touch key input
PE2/STPI/
STP/KEY11
PE2 PEPU
PES0 ST CMOS General purpose I/O. Register enabled pull-up.
STPI PES0
IFS ST — STM capture input
STP PES0 — CMOS STM output
KEY11 PES0 AN — Touch key input
PE3/STPI/
STPB/
KEY12
PE3 PEPU
PES0 ST CMOS General purpose I/O. Register enabled pull-up.
STPI PES0
IFS ST — STM capture input
STPB PES0 — CMOS STM inverted output
KEY12 PES0 AN — Touch key input
PE4/OSC1 PE4 PEPU
PES1 ST CMOS General purpose I/O. Register enabled pull-up.
OSC1 PES1 HXT — HXT oscillator pin
PE5/CTP1B/
OSC2
PE5 PEPU
PES1 ST CMOS General purpose I/O. Register enabled pull-up.
CTP1B PES1 — CMOS CTM0 inverted output
OSC2 PES1 — HXT HXT oscillator pin
VDD VDD — PWR — Positive power supply
VSS VSS — PWR — Negative power supply, ground.
Legend: I/T: Input type; O/T: Output type;
OPT: Optional by register option; PWR: Power;
ST: Schmitt Trigger input; AN: Analog signal;
CMOS: CMOS output; NMOS: NMOS output;
HXT: High frequency crystal oscillator;
LXT: Low frequency crystal oscillator

Rev. 1.60 16 August 20, 2019 Rev. 1.60 17 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F350
Pad Name Function OPT I/T O/T Description
PA0/SDO/
ICPDA/
OCDSDA
PA0
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SDO PAS0 — CMOS SPI data output
ICPDA — ST CMOS ICP Data/Address pin
OCDSDA — ST CMOS OCDS Data/Address pin, for EV chip only.
PA1/CTP0 PA1
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTP0 PAS0 — CMOS CTM0 output
PA2/SCS/
ICPCK/
OCDSCK
PA2
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SCS PAS0
IFS ST CMOS SPI slave select
ICPCK — ST CMOS ICP Clock pin
OCDSCK — ST — OCDS Clock pin, for EV chip only.
PA3/SCS/XT1
PA3
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SCS PAS0
IFS ST CMOS SPI slave select
XT1 PAS0 LXT — LXT oscillator pin
PA4/SDO/XT2
PA4
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SDO PAS1 — CMOS SPI data output
XT2 PAS1 — LXT LXT oscillator pin
PA5/CTP0B PA5
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTP0B PAS1 — CMOS CTM0 inverted output
PA6/CTCK0/
INT0
PA6
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTCK0 PAS1 ST — CTM0 clock input
INT0
PAS1
INTEG
INTC0
ST — External Interrupt 0
PA7 PA7
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
PB0/SDI/
SDA/VREF/
AN0
PB0 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up.
SDI PBS0 ST — SPI data input
SDA PBS0 ST NMOS I2C data line
VREF PBS0 — AN A/D Converter reference voltage output
AN0 PBS0 AN — A/D Converter analog input

Rev. 1.60 18 August 20, 2019 Rev. 1.60 19 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Pad Name Function OPT I/T O/T Description
PB1/SCK/
SCL/AN1
PB1 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up.
SCK PBS0 ST CMOS SPI serial clock
SCL PBS0 ST NMOS I2C clock line
AN1 PBS0 AN — A/D Converter analog input
PB2/PTPI/TX/
PTP/AN2
PB2 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up.
PTPI PBS0
IFS ST — PTM capture input
TX PBS0 — CMOS UART TX serial data output
PTP PBS0 — CMOS PTM output
AN2 PBS0 AN — A/D Converter analog input
PB3/RX/AN3
PB3 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up.
RX PBS0 ST — UART RX serial data input
AN3 PBS0 AN — A/D Converter analog input
PB4/PTPI/
PTPB/KEY1/
AN4
PB4 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up.
PTPI PBS1
IFS ST — PTM capture input
PTPB PBS1 — CMOS PTM inverted output
KEY1 PBS1 AN — Touch key input
AN4 PBS1 AN — A/D Converter analog input
PB5/STCK/
KEY2/AN5
PB5 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up.
STCK PBS1 ST — STM clock input
KEY2 PBS1 AN — Touch key input
AN5 PBS1 AN — A/D Converter analog input
PB6/PTCK/
KEY3/AN6
PB6 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up.
PTCK PBS1 ST — PTM clock input
KEY3 PBS1 AN — Touch key input
AN6 PBS1 AN — A/D Converter analog input
PB7/INT1/
KEY4/AN7
PB7 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up.
INT1
PBS1
INTEG
INTC0
ST — External Interrupt 1
KEY4 PBS1 AN — Touch key input
AN7 PBS1 AN — A/D Converter analog input
PC0/KEY5 PC0 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY5 PCS0 AN — Touch key input
PC1/KEY6 PC1 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY6 PCS0 AN — Touch key input
PC2/KEY7 PC2 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY7 PCS0 AN — Touch key input
PC3/KEY8 PC3 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY8 PCS0 AN — Touch key input

Rev. 1.60 18 August 20, 2019 Rev. 1.60 19 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Pad Name Function OPT I/T O/T Description
PC4/KEY9 PC4 PCPU
PCS1 ST CMOS General purpose I/O. Register enabled pull-up.
KEY9 PCS1 AN — Touch key input
PC5/KEY10 PC5 PCPU
PCS1 ST CMOS General purpose I/O. Register enabled pull-up.
KEY10 PCS1 AN — Touch key input
PC6/KEY11 PC6 PCPU
PCS1 ST CMOS General purpose I/O. Register enabled pull-up.
KEY11 PCS1 AN — Touch key input
PC7/KEY12 PC7 PCPU
PCS1 ST CMOS General purpose I/O. Register enabled pull-up.
KEY12 PCS1 AN — Touch key input
PD0/KEY13 PD0 PDPU
PDS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY13 PDS0 AN — Touch key input
PD1/KEY14 PD1 PDPU
PDS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY14 PDS0 AN — Touch key input
PD2/KEY15 PD2 PDPU
PDS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY15 PDS0 AN — Touch key input
PD3/KEY16 PD3 PDPU
PDS0 ST CMOS General purpose I/O. Register enabled pull-up.
KEY16 PDS0 AN — Touch key input
PD4/KEY17 PD4 PDPU
PDS1 ST CMOS General purpose I/O. Register enabled pull-up.
KEY17 PDS1 AN — Touch key input
PD5/KEY18 PD5 PDPU
PDS1 ST CMOS General purpose I/O. Register enabled pull-up.
KEY18 PDS1 AN — Touch key input
PD6/KEY19 PD6 PDPU
PDS1 ST CMOS General purpose I/O. Register enabled pull-up.
KEY19 PDS1 AN — Touch key input
PD7/KEY20 PD7 PDPU
PDS1 ST CMOS General purpose I/O. Register enabled pull-up.
KEY20 PDS1 AN — Touch key input
PE0 PE0 PEPU
PES0 ST CMOS General purpose I/O. Register enabled pull-up.
PE1 PE1 PEPU
PES0 ST CMOS General purpose I/O. Register enabled pull-up.
PE2/STPI/
STP
PE2 PEPU
PES0 ST CMOS General purpose I/O. Register enabled pull-up.
STPI PES0
IFS ST — STM capture input
STP PES0 — CMOS STM output
PE3/STPI/
STPB
PE3 PEPU
PES0 ST CMOS General purpose I/O. Register enabled pull-up.
STPI PES0
IFS ST — STM capture input
STPB PES0 — CMOS STM inverted output
PE4/OSC1 PE4 PEPU
PES1 ST CMOS General purpose I/O. Register enabled pull-up.
OSC1 PES1 HXT — HXT oscillator pin

Rev. 1.60 20 August 20, 2019 Rev. 1.60 21 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Pad Name Function OPT I/T O/T Description
PE5/CTCK1/
OSC2
PE5 PEPU
PES1 ST CMOS General purpose I/O. Register enabled pull-up.
CTCK1 PES1 ST — CTM1 clock input
OSC2 PES1 — HXT HXT oscillator pin
PE6/CTP1 PE6 PEPU
PES1 ST CMOS General purpose I/O. Register enabled pull-up.
CTP1 PES1 — CMOS CTM1 output
PE7/CTP1B PE7 PEPU
PES1 ST CMOS General purpose I/O. Register enabled pull-up.
CTP1B PES1 — CMOS CTM1 inverted output
VDD VDD — PWR — Positive power supply
VSS VSS — PWR — Negative power supply, ground.
Legend: I/T: Input type; O/T: Output type;
OPT: Optional by register option; PWR: Power;
ST: Schmitt Trigger input; AN: Analog signal;
CMOS: CMOS output; NMOS: NMOS output;
HXT: High frequency crystal oscillator;
LXT: Low frequency crystal oscillator
BS66F360
Pad Name Function OPT I/T O/T Description
PA0/SDO/
ICPDA/
OCDSDA
PA0
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SDO PAS0 — CMOS SPI data output
ICPDA — ST CMOS ICP Data/Address pin
OCDSDA — ST CMOS OCDS Data/Address pin, for EV chip only.
PA1/CTP0 PA1
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTP0 PAS0 — CMOS CTM0 output
PA2/SCS/
ICPCK/
OCDSCK
PA2
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SCS PAS0
IFS ST CMOS SPI slave select
ICPCK — ST CMOS ICP Clock pin
OCDSCK — ST — OCDS Clock pin, for EV chip only.
PA3/SCS/XT1
PA3
PAWU
PAPU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SCS PAS0
IFS ST CMOS SPI slave select
XT1 PAS0 LXT — LXT oscillator pin
PA4/SDO/
XT2
PA4
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
SDO PAS1 — CMOS SPI data output
XT2 PAS1 — LXT LXT oscillator pin
PA5/CTP0B PA5
PAWU
PAPU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and wake-up.
CTP0B PAS1 — CMOS CTM0 inverted output