Nuvoton NuMicro NuTiny-SDK-M031TC User manual

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NUTINY-SDK-M031 USER MANUAL
ARM®Cortex®- M
32-bit Microcontroller
NuMicro®Family
NuTiny-SDK-M031TC
User Manual
The information described in this document is the exclusive intellectual property of
Nuvoton Technology Corporation and shall not be reproduced without permission from Nuvoton.
Nuvoton is providing this document only for reference purposes of NuMicro®microcontroller based system
design. Nuvoton assumes no responsibility for errors or omissions.
All data and specifications are subject to change without notice.
For additional information or questions, please contact: Nuvoton Technology Corporation.
www.nuvoton.com

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Table of Contents
1OVERVIEW .........................................................................................4
2NUTINY-SDK-M031TC INTRODUCTION......................................................5
NuTiny-SDK-M031TC Jumper Description........................................................ 62.1
2.1.1 Power Setting ...................................................................................................6
2.1.2 Debug Connector ...............................................................................................6
2.1.3 USB Connector .................................................................................................6
2.1.4 Extended Connector ...........................................................................................6
2.1.5 Reset Button.....................................................................................................6
2.1.6 Power Connector ...............................................................................................6
2.1.7 Offline programming botton ...................................................................................6
2.1.8 VCOM Enable...................................................................................................7
Pin Assignment for Extended Connector .......................................................... 92.2
NuTiny-SDK-M031TC PCB Placement ...........................................................112.3
3How to Start NuTiny-SDK-M031TC on the Keil μVision®IDE ............................ 12
Keil uVision®IDE Software Download and Install ...............................................123.1
Nuvoton Nu-Link Driver Download and Install ...................................................123.2
Hardware Setup.......................................................................................123.3
Example Program.....................................................................................133.4
4How to Start NuTiny -SDK-M031 on the IAR Embedded Workbench ................... 14
IAR Embedded Workbench Software Download and Install...................................144.1
Nuvoton Nu-Link Driver Download and Install ...................................................144.2
Hardware Setup.......................................................................................144.3
Example Program.....................................................................................144.4
5Starting to Use Nu-Link2-Me VCOM Function............................................... 16
Downloading and Installing VCOM Driver ........................................................165.1
VCOM Mode Setting on NuTiny-SDK-M031TC..................................................175.2
Setup on the Development Tool....................................................................175.3
5.3.1 Check the Using UART on the Keil μVision®IDE........................................................ 17
5.3.2 Check the Target Device and Debug Setting ............................................................ 18
5.3.3 Build and Download Code to NuTiny-SDK-M031TC.................................................... 20
5.3.4 Open the Serial Port Terminal .............................................................................. 20
5.3.5 Reset Chip ..................................................................................................... 20
6NuTiny-SDK-M031TC Schematic ............................................................. 22

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NUTINY-SDK-M031 USER MANUAL
NuTiny-SDK-M031TC Schematic..................................................................226.1
GPIO for 33 pin Schematic..........................................................................236.2
Nu-Link2-Me V3.0 Schematic.............................Error! Bookmark not defined.6.3
7REVISION HISTORY............................................................................ 25

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NUTINY-SDK-M031 USER MANUAL
1 OVERVIEW
NuTiny-SDK-M031TC is the specific development tool for NuMicro®M031 series. User can use
NuTiny-SDK-M031TC to develop and verify the application program easily.
NuTiny-SDK-M031TC includes two portions. One is NuTiny-SDK-M031TC and the other is Nu-
Link2-Me. NuTiny-SDK-M031TC is the evaluation board and Nu-Link2-Me is its Debug Adaptor.
Thus, user does not need other additional ICE or debug equipment.
The Nuvoton®Arm®Cortex®-M0 NuMicro®M031/M032 series MCU features 1.8 ~ 3.6V operating
voltage, running up to 48 MHz, and provides a good solution for the applications that need low-
voltage interface connection operation. This product can be applied to mobile devices, application
processor connected peripheral controllers, IoT sensor devices, motor control, industrial control,
and consumer devices.
NuMicro®M031/M032 series provide 16 channels of 12-bit ADC with up to 2Msps high conversion
rate and the PWM with 96 MHz high performance interface which sourced from PLL clock for the
requirement of precise, high response of volatge or current and mass processing data market.
Besides, NuMicro®M031/M032 series also provide up to 3 sets of UART interface for connecting
more extended modules in the application such as networking or sensor modules.
The functions of NuMicro®M032 series are all based on M031 and enhanced with USB 2.0 full-
speed device feature to provide more possibilities of USB related application.
In breif, the NuMicro®M031/M032 series support the wide voltage range from 1.8V to 3.6V and
temperature ranging from -40°C to 105°C, up to 128 Kbytes of Flash memory, up to 16 Kbytes of
SRAM, up to 8 Kbytes of ISP (In-System Programming) as well as ICP (In-Circuit Programming)
and IAP (In-Application Programming) in LQFP64, LQFP48, QFN33, TSSOP28 or TSSOP20
packages. It also supports high immunity of 4KV ESD (HBM)/4.4KV EFT. It is also equipped with
plenty of peripherals such as Timers, Watchdog Timers, UART, SPI, I²C, USCI, PDMA, EBI,
GPIO, up to 12 channels of 16-bit PWM, up to 16 channels of 12-bit ADC, USB device, low
voltage reset, brown-out detector, 96-bit UID (Unique Identification), and 128-bit UCID (Unique
Customer Identification).

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NUTINY-SDK-M031 USER MANUAL
2 NUTINY-SDK-M031TC INTRODUCTION
NuTiny-SDK-M031TC uses the M031TC1AE as the target microcontroller. Figure 2-1 is NuTiny-
SDK-M031TC for M031 series, the left portion is called NuTiny-SDK-M031TC and the right
portion is Debug Adaptor called Nu-Link2-Me.
NuTiny-SDK-M031TC is similar to other development boards. Users can use it to develop and
verify applications to emulate the real behavior. The on board chip covers M031 series features.
The NuTiny-SDK-M031TC can be a real system controller to design user’s target systems.
Nu-Link2-Me is a Debug Adaptor. The Nu-Link2-Me Debug Adaptor connects your PC's USB port
to your target system (via Serial Wired Debug Port) and allows you to program and debug
embedded programs on the target hardware. The Nu-Link2-Me also supports VCOM function,
which gives users more flexibility when debug. To use Nu-Link2-Me Debug adaptor with IAR or
Keil, please refer to “Nuvoton NuMicro®IAR ICE driver user manual “or Nuvoton NuMicro®Keil
ICE driver user manual” in detail. These two documents will be stored in the local hard disk when
the user installs each driver. To use Nu-Link2-Me VCOM function, please refer to Chapter 5.
Reset Botton
(SW1)
I/O LED
Power LED
Extended Connector
(JP3/JP6)
ICE Controller
USB Connector
(ICE J1)
ICE Controller
Target Chip MCUVCC:
1.8V, 3.3V or 5V
(JPR1)
VDD
(JP1)
GND
(JP2)
VCOM
Enable
Extended Connector
(JP4/JP5)
ICEVCC:
1.8V or 3.3V
(JPR1)
Offline
Programming
Button
Figure 2-1 NuTiny-SDK-M031TC (PCB Board)

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NuTiny-SDK-M031TC Jumper Description2.1
2.1.1 Power Setting
ICEJ3: USB port in Nu-Link2-Me
ICEJPR1: Configures the MCU operating voltage at 1.8V / 3.3V / 5V
ICEJPR2: Configures the ICE(Nu-Link2-Me) operating voltage at 1.8V / 3.3V
JP1: VDD Voltage connecter in NuTiny-SDK-M031TC
Model
ICEJ3 USB
port
ICEJPR1
(MCUVCC)
ICEJPR2
(ICEVCC)
JP1 VDD
MCU
Voltage
ICE Chip
Voltage
Model 1
Connect to
PC
Select 1.8V
Select 1.8V
DC 1.8V
output
DC 1.8V
DC 1.8V
Model 2
Connect to
PC
Select 3.3V
(default)
Select 3.3V
(default)
DC 3.3V
output
DC 3.3V
DC 3.3V
Model 3
Connect to
PC
Select 5V
Select 3.3V
(default)
DC 5V
output
DC 5V
DC 3.3V
Model 4
X
X
Select 3.3V
(default)
DC 1.8 V ~
3.3 V Input
Voltage by
J5 input
DC 3.3V
X: Unused.
Note: Don’t configure the MCU operating voltage to 5V because the operating
voltage of the M031 series is 1.8V~3.3V.
2.1.2 Debug Connector
J1: Connector in target board (NuTiny-SD K-M031TC) for connecting with Nuvoton ICE
adaptor (Nu-Link2-Me)
ICEJ4: Connector in ICE adaptor (Nu-Link2-Me) for connecting with a target board (for
example NuTiny-SDK-M031TC)
2.1.3 USB Connector
ICEJ3: Micro USB Connector in Nu-Link2-Me connected to a PC USB port
2.1.4 Extended Connector
JP3, JP4, JP5, JP6: Show all chip pins in NuTiny-SDK-M031TC
2.1.5 Reset Button
SW1: Reset button in NuTiny-SDK-M031TC
2.1.6 Power Connector
JP1: VDD connector in NuTiny-SDK-M031TC
JP2: GND connector in NuTiny-SDK-M031TC
2.1.7 Offline Programming Botton
ICESW1: Offline programming button in NuTiny-SDK-M031TC

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NUTINY-SDK-M031 USER MANUAL
2.1.8 VCOM Enable
ICESW2: VCOM function enable for NuTiny-SDK-M031TC. Switch ICESW2 on before
power on to enable VCOM function. ICESW2 connects pin 31(PB.12/RXD) and pin
30(PB.13/TXD) in NuTiny-SDK-M031TC with pin 22(PB.1/TXD) and pin 21(PB.0/RXD) in
Nuvoton ICE adaptor (Nu-Link2-Me).

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NUTINY-SDK-M031 USER MANUAL
Switch Pin
Number
Function Name
UART0 Mode
VCOM Mode
ICESW2
1
ICE_TX/MCU_RX
Off
On
2
ICE_RX/MCU_TX
Off
On
3
X
X
X
4
X
X
X
X: Unused.

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NUTINY-SDK-M031 USER MANUAL
Pin Assignment for Extended Connector2.2 NuTiny-SDK-M031TC provides M031TC1AE on board and the extended connector (JP3, JP4,
JP5and JP6) for QFN-33 pin. Table 2-1 is the pin assignment for M031TC1AE.
Pin No
Pin Function
1
PB.5/ADC0_CH5/I2C0_SCL/PWM0_CH0/UART2_TXD/TM0/INT0
2
PB.4/ADC0_CH4/I2C0_SDA/PWM0_CH1/UART2_RXD/TM1/INT1
3
PB.3/ADC0_CH3/I2C1_SCL/UART1_TXD/PWM0_CH2/PWM0_BRAKE0/TM2/INT2
4
PB.2/ADC0_CH2/I2C1_SDA/UART1_RXD/PWM0_CH3/TM3/INT3
5
PB.1/ADC0_CH1/UART2_TXD/I2C1_SCL/PWM0_CH4/PWM0_BRAKE0
6
PB.0/ADC0_CH0/UART2_RXD/SPI0_I2SMCLK/I2C1_SDA/PWM0_CH5/PWM0_BRAKE1
7
PF.5/UART2_RXD/UART2_nCTS/PWM0_CH0/X32_IN/ADC0_ST
8
PF.4/UART2_TXD/UART2_nRTS/PWM0_CH1/X32_OUT
9
PF.3/UART0_TXD/I2C0_SCL/XT1_IN
10
PF.2/UART0_RXD/I2C0_SDA/XT1_OUT
11
PA.3/SPI0_SS/UART1_TXD/I2C1_SCL/PWM0_CH2/CLKO
12
PA.2/SPI0_CLK/UART1_RXD/I2C1_SDA/PWM0_CH3
13
PA.1/SPI0_MISO/UART0_TXD/UART1_nCTS/PWM0_CH4
14
PA.0/SPI0_MOSI/UART0_RXD/UART1_nRTS/PWM0_CH5
15
PF.15/PWM0_BRAKE0/PWM0_CH1/TM2/CLKO/INT4
16
nRESET
17
PF.0/UART1_TXD/I2C1_SCL/UART0_TXD/ICE_DAT
18
PF.1/UART1_RXD/I2C1_SDA/UART0_RXD/ICE_CLK
19
PC.1/UART2_TXD/I2C0_SCL
20
PC.0/UART2_RXD/I2C0_SDA
21
PA.12/I2C1_SCL
22
PA.13/I2C1_SDA
23
PA.14/UART0_TXD
24
PA.15/UART0_RXD
25
VSS
26
LDO_CAP
27
VDD
28
PB.15/ADC0_CH15/SPI0_SS/UART0_nCTS/TM0_EXT/PWM0_BRAKE1
29
PB.14/ADC0_CH14/SPI0_CLK/UART0_nRTS/TM1_EXT/CLKO

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NUTINY-SDK-M031 USER MANUAL
30
PB.13/ADC0_CH13/SPI0_MISO/UART0_TXD/TM2_EXT
31
PB.12/ADC0_CH12/SPI0_MOSI/UART0_RXD/TM3_EXT
32
AVDD
Table 2-1 Pin Assignment for M031TC1AE

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NuTiny-SDK-M031TC PCB Placement2.3 Users can refer to Figure 2-2 for the NuTiny-SDK-M031TC PCB placements.
Figure 2-2 NuTiny-SDK-M031TC PCB Placement

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3 HOW TO START NUTINY-SDK-M031TC ON THE KEIL ΜVISION®IDE
Keil uVision®IDE Software Download and Install3.1 Please visit the Keil company website (http://www.keil.com) to download the Keil μVision®IDE
and install the RVMDK
Nuvoton Nu-Link Driver Download and Install3.2 Please visit the Nuvoton company NuMicro®website (http://www.nuvoton.com/NuMicro) to
download “NuMicro®Keil μVision®IDE driver” file. When the Nu-Link driver has been well
downloaded, please unzip the file and execute the “Nu-Link_Keil_Driver.exe” to install the driver.
Hardware Setup
3.3 The hardware setup is shown as Figure 3-1.
Figure 3-1 NuTiny-SDK-M031TC Hardware Setup

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NUTINY-SDK-M031 USER MANUAL
Example Program3.4 This example demonstrates the ease of downloading and debugging an application on a NuTiny-
SDK-M031TC board. It can be found on Figure 3-2 list directory and downloaded from Nuvoton
NuMicro®website.
The example file can be found in the directory list shown in Figure 3-2.
Directory
C:\Nuvoton\BSP
Library\M031_Series_BSP_CMSIS_V3.00.000\SampleCode\Template\Keil
Project
File
Figure 3-2 Example Directory
This sample code will show some functions about system manager controller and clock controller.
Start uVision®
Start debug mode
When using the debugger commands,
you may:
Project –Open
Open the SYS.uvproj project file
Review variables in the watch
window
Single step through code
Project –Build
Compile and link the SYS application
Reset the device
Flash –Download
Program the application code into on-chip
Flash ROM
Run the application

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4 HOW TO START NUTINY -SDK-M031 ON THE IAR EMBEDDED
WORKBENCH
IAR Embedded Workbench Software Download and Install4.1 Please connect to IAR company website (http://www.iar.com) to download the IAR Embedded
Workbench and install the EWARM.
Nuvoton Nu-Link Driver Download and Install4.2 Please visit the Nuvoton company NuMicro®website (http://www.nuvoton.com/NuMicro ) to
download the “NuMicro®IAR EWARM Driver” file. When the Nu-Link driver has been well
downloaded, please unzip the file and execute the “Nu-Link_Keil_Driver.exe” to install the driver.
Hardware Setup4.3 The hardware setup is shown as Figure 4-1.
Figure 4-1 NuTiny-SDK-M031TC Hardware Setup
Example Program4.4 This example demonstrates the ease of downloading and debugging an application on a NuTiny-
SDK-M031TC board. It can be found on Figure 4-2 list directory and downloaded from Nuvoton
NuMicro®website.

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NUTINY-SDK-M031 USER MANUAL
Directory
C:\Nuvoton\BSP
Library\M031_Series_BSP_CMSIS_V3.00.000\SampleCode\Template\IAR
Project
File
Figure 4-2 Example Directory
This sample code will show some functions about system manager controller and clock controller.
Start IAR Embedded Workbench
Project –Download and Debug
Program the application code into on-chip
Flash ROM
File-Open-Workspace
Open the SYS.eww workspace file
Single step through code
Project - Make
Compile and link the SYS application
Reset the device
Run the application

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5 STARTING TO USE NU-LINK2-ME VCOM FUNCTION
Downloading and Installing VCOM Driver5.1 Please connect to Nuvoton NuMicro®website (http://www.nuvoton.com/NuMicro) to download the
“NuMicro®ICP Programming Tool” file. After the ICP Programming Tool driver is downloaded,
please unzip the file and execute the “ICP Programming Tool.exe”. Simply follow the installation
and optional steps to install ICP Programming Tool and Nu-Link USB Driver, which included
VCOM driver.
Figure 5-1 Optional Step after ICP Programming Tool Installation
Figure 5-2 Install Nuvoton Nu-LinkDeviceClass

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Figure 5-3 Install Nuvoton COM&LPT Driver
Figure 5-4 Install Nuvoton Nu-Link2DeviceClass
VCOM Mode Setting on NuTiny-SDK-M031TC5.2 Before the NuTiny-SDK-M031TC is connected to the PC, please enable ICESW2 VCOM function
by switching on ICESW2. The NuTiny-SDK-M031TC transmits through UART0 to VCOM to send
out data. Switch ICESW2 off when using UART0 function without VCOM function.
Setup on the Development Tool5.3 The example is demonstrated on the Keil μVision®IDE.
5.3.1 Check the Using UART on the Keil μVision®IDE
Please open the project and find system_M031Series.h to check the using UART in
DEBUG_PORT, which has to be the same as the using UART in the NuTiny-SDK-M031TC.

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NUTINY-SDK-M031 USER MANUAL
Figure 5-5 The Using UART on Keil μVision®IDE
5.3.2 Check the Target Device and Debug Setting
The target device has to be the same as the setting in Debug. Please click “Target Option”to
open the Option windows, and find the setting in “Device”, “Debug”, and “Utilities”page. Please
follow the steps below to check the setting.
Step 1

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Step 2
Step 3

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5.3.3 Build and Download Code to NuTiny-SDK-M031TC
Please build the project and download code to NuTiny-SDK-M031TC.
5.3.4 Open the Serial Port Terminal
User can use serial port terminal, PuTTY for example, to print out debug message.
Figure 5-6 Set Baud Rate
5.3.5 Reset Chip
After pushing the reset button and enable ICESW2 VCOM function, the chip will reprogram
application and print out debug message.