Nuvoton NuMicro NuTiny-SDK-M031TC User manual

M031/M032
Jan 28, 2019 Page 1of 26 Rev 1.00
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

M031/M032
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NUTINY-SDK-M031 USER MANUAL
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

M031/M032
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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

M031/M032
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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-M031 USER MANUAL
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).

M031/M032
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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

M031/M032
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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