Nuvoton NuMicro series User manual

NuMaker UNO
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NUMAKER UNO USER MANUAL
ARM®Cortex®-M0
32-bit Microcontroller
NuMicro®Family
NuMaker UNO
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...................................................................................................................3
2FEATURES...................................................................................................................4
3INTRODUCTION TO NUMAKER UNO DEVELOPMENT BOARD...............................5
3.1 NuMaker UNO Jumper Description ..........................................................................................7
3.2 Pin Assignment for NUC131SD2AE Extended Connectors...................................................8
3.3 NuMaker UNO NUC131SD2AE Extended Connectors Layout..............................................9
3.4 Arduino UNO Pin Assignment for NuMaker UNO ...............................................................10
3.5 NuMaker UNO Arduino Layout ...........................................................................................11
3.6 NuMaker UNO PCB Placement..........................................................................................12
4DOWNLOADING AND INSTALLING ARDUINO IDE 1.8.5 AND NUMAKER
UNO SOFTWARE................................................................................................................13
4.1Downloading and Installing Arduino IDE 1.8.5 Software.....................................................13
4.2 Installing Nu-Link USB Driver for Arduino IDE 1.8.5 ...........................................................16
4.3 Hardware Setup..................................................................................................................20
4.4 Testing USB and VCOM Device in the Device Manager.....................................................20
5STARTING TO USE NUMAKER UNO ON ARDUINO IDE 1.8.5................................21
5.1 Compiling and Executing Example Program.......................................................................21
6STARTING TO USE NUMAKER UNO ON KEIL μVision®IDE...................................26
6.1 Downloading and Installing Keil μVision® IDE Software.......................................................26
6.2 Downloading and Installing Nu-Link Keil Driver...................................................................26
6.3 Hardware Setup..................................................................................................................26
6.4 Procedure for Downloading and Debugging Example Program..........................................26
7STARTING TO USE NUMAKER UNO ON IAR EMBEDDED WORKBENCH ............33
7.1 Downloading and Installing IAR Embedded Workbench Software......................................33
7.2 Downloading and Installing Nu-Link IAR Driver...................................................................33
7.3 Hardware Setup..................................................................................................................33
7.4 Procedure for Downloading and Debugging Example Program..........................................33
8DOWNLOADING NU-LINK DRIVER FROM NUVOTON WEBSITE...........................36
8.1 Downloading and Installing Nu-Link Keil Driver...................................................................36
8.2 Downloading and Installing Nu-Link IAR Driver...................................................................38
9NUMAKER UNO SCHEMATICS.................................................................................40
9.1 NuMaker UNO I/O Schematic.............................................................................................40
9.2 NuMaker UNO NUC131SD2AE Schematic.........................................................................41
9.3 Nu-Link-Me Schematic........................................................................................................42
10 REVISION HISTORY..................................................................................................43

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1 OVERVIEW
Arduino is an open-source electronics platform based on easy-to-use hardware and software. The
NuMicro®NuMaker UNO Evaluation Board is an Arduino compatible hardware using NuMicro®
microcontroller (MCU) as the MCU. Its function can be extended with Arduino add-ons. With the
Arduino IDE, users can develop their applications and leverage large number of open source
samples.
Figure 1-1 NuMaker UNO Board
The NuMaker UNO is a specific development tool for NuMicro®NUC131 series by which users
can develop and verify the application program easily. Its purpose is to provide a platform for
development and learning. With ADC, PWM, I²C, SPI, UART and other peripheral functions, user
can set different functions on the NuMaker UNO development kit, or increase the peripheral
functions according to the user needs on the development kit. The NuMaker UNO includes two
portions: NuMaker UNO (an evaluation board) and Nu-Link-Me (Debug Adaptor). With the
NuMaker UNO, users do not need additional ICE or debug equipment.
Figure 1-2 NuMaker UNO Board with Different Add-ons
The NuMaker UNO is pin to pin compatible with Arduino UNO board.
Digital pins provide UART, I2C, LED, INT, and 10-channels PWM. In addition, the extended pins
of MCU NUC131SD2AE provide 24-channels PWM and 6-channels UART. Clock Output (CLKO)
is also available on extra pin.

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2 FEATURES
The NuMaker UNO development board provides the following features:
Wide range of development tools for Learning/applications/debug
Portable package development and debugging tools
Rich MCU peripheral functions, such as ADC, PWM, I²C, SPI, and UART
Able to connect to different application modules due to high scalability
Supports pin to pin compatible with Arduino UNO revision 3
Supports USB virtual serial port (VCOM)
Supported by a wide choice of Integrated Development Environments (IDEs) including
Arduino IDE, IAR EWARM and Keil RVMDK IDE
Extension resources:
NuMicro®Morpho extension pin headers for full access to all MCU NUC131 I/O
On-board Nu-Link debugger/programmer with SWD connector
Flexible board power supply:
USB VBUS (jumper JPR1 can be used to select 5V or 3.3V)
External VIN (7V ~ 12V) supply voltage from transformer converted into 5V
External 2.5 ~ 5.5V supply voltage from other power source input to VDD pin
LEDs Status
Power, TX, RX, ICE and user status
One push button: RESET

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3 INTRODUCTION TO NUMAKER UNO DEVELOPMENT BOARD
Figure 3-1 and Figure 3-2 show the NuMaker UNO development board, in which the left portion is
called NuMaker UNO target board and the right portion is Debug Adaptor called Nu-Link-Me.
The NuMaker UNO is similar to other development boards. Users can use it to develop and verify
applications to emulate the real behavior. NuMaker UNO can be a real system controller to design
user’s target system. NuMaker UNO is pin to pin compatible with Arduino UNO revision 3. The left
portion is NuMaker UNO target board where the NUC131 series MCU is mounted on. The
NUC131 series provides 24-ch PWM as well as 6-ch UART, and commonly used peripherals
such as Timer, WDT, SPI, I2C and ADC. The NUC131 series also provides CAN communication
interface.
The right portion is the debug adaptor called Nu-Link-Me which connects the USB port from PC to
user’s target system (via the Serial Wired Debug port) and allows users to program and debug
embedded programs on the target hardware. In addition to loading external application, it also
provides a virtual serial port (VCOM) functions. The debug messages through user-friendly Nu-
Link–Me is displayed on the computer screen. For detailed description, please refer to section
3.1.2. The NuMaker UNO supports Arduino IDE, Keil, and IAR. For detailed installation and setup,
please refer to section 4.1.
The NuMaker UNO development board provides the Arduino pin-out definition and extended
connectors for each pin from the NUC131SD2AE MCU. It can be used to connect the application
circuit board. The target board also supports a wide range of power supplies, such as from ICE,
VDD & GND (JP1 & JP2) or from 7V ~ 12V transformer. LED status is for power, I/O, TX, RX and
ICE, as shown in Figure 3-1.
Figure 3-1 NuMaker UNO Development Board –Upper Side

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Figure 3-2 NuMaker UNO Development Board –Bottom Side

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3.1 NuMaker UNO Jumper Description
3.1.1 Power Settings
There are three methods to use the NuMaker UNO board to provide power to VDD. The first
method is through the Nu-Link-Me USB interface. This power will go through LDO voltage
regulator to 3.3V, JPR1 can be used to adjust VDD power to 5V or 3.3V. The second method is
through the JP1 on development board to VDD by DC 2.5V ~ 5.5V power supply. The third
method is through transformer (7V ~ 12V) and then the voltage is converted into 5V through
the step-down circuit. Please refer to the table below.
Model
JPR1
(Selection Voltage)
JP1
(VDD Provided Voltage)
MCU Voltage
USB
Select 5V or 3.3V (Default is 5V)
USB, target board will be able to get the
supply voltage.
(SW2 pin1 need on)
DC 5V or 3.3V
Other power for VDD pin
X
External power supply DC 2.5 V ~ 5.5 V.
Voltage by JP1
input
Transformer
X
Transformer DC 7 V ~ 12 V, after pass
the step-down circuit, it provides 5V
supply to target chip
(J2 need short)
DC 5V
Table 3-1 Power Settings
3.1.2 USB Virtual COM Function Setting
SW2: Open the Virtual COM mode for the debug message and supply power to NuMaker
UNO.
The Virtual COM function can be used for Arduino IDE, Keil and IAR. To enable VCOM
function on Nu-Link Me, turn on all SW2 pins. To enable the UART0 function, turn off pin 2 ~
pin 4 on SW2. Please refer to the table below.
Switch Pin
Number
Function Name
UART0 Mode
VCOM Mode
1
ICE_VCC
On
On
2
VCOM_En
Off
On
3
VCOM_TX
Off
On
4
VCOM_RX
Off
On
Table 3-2 USB VCOM Setting (Default as VCOM Mode)

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3.1.3 Header Description
JP1
VDD connector on NuMaker UNO, can be accessed by an external power supply DC 2.5V ~ 5.5V, in
order to provide NuMaker UNO power supply
JP2
GND connector on NuMaker UNO, can be accessed by external power supply GND
J1
Mini USB connector on Nu-Link-Me connected to the PC USB port
SW2
Pin 1 is ICE VDD connected to target chip VDD
CON1
7 V ~ 12 V transformer
J2
Power JACK is connected to VDD transformer, after the step-down circuit then to provide VDD power
supply to target Chip
SW1
Reset button on NuMaker UNO
JP10
Connector on target board (NuMaker UNO) for connecting to Nuvoton ICE adaptor (Nu-Link-Me)
JP9
Connector on ICE adaptor (Nu-Link-Me) for connecting to the target board (NuMaker UNO)
JP3 ~ JP6
Show all NUC131SD2AE MCU pin-out on NuMaker UNO
X
Unused
Table 3-3 Header Description
Note: When using the transformer power supply, please turn off all the SW2 pins.
3.2 Pin Assignment for NUC131SD2AE Extended Connectors
The NuMaker UNO provides the NUC131SD2AE target chip on board and the NUC131SD2AE
extended connectors (JP3, JP4, JP5 and JP6) for LQFP64-pin. Table 3-4 shows the pin
assignment for NUC131SD2AE.
Pin No
Odel
Pin Name
Pin No
Pin Name
01
PB.14,INT0
33
PC.11,PWM1_BRAKE1
02
PB.13
34
PC.10,PWM1_BRAKE0
03
PB.12,CLKO,BPWM1_CH3
35
PC.9,PWM0_BRAKE1
04
PF.5,I2C0_SCL,PWM1_CH5
36
PC.8,PWM0_BRAKE0
05
PF.4,I2C0_SDA,PWM1_CH4
37
PA.15,PWM0_CH3
06
PA.11,I2C1_SCL,PWM1_CH3
38
PA.14,PWM0_CH2
07
PA.10,I2C1_SDA,PWM1_CH2
39
PA.13,PWM0_CH1,UART5_TXD
08
PA.9,I2C0_SCL,UART1_nCTS
40
PA.12,PWM0_CH0,UART5_RXD
09
PA.8,I2C0_SDA,UART1_nRTS
41
PF.7,ICE_DAT
10
PB.4,UART1_RXD
42
PF.6,ICE_CLK
11
PB.5,UART1_TXD
43
AVSS
12
PB.6,UART1_nRTS
44
PA.0,PWM0_CH4,ADC0,I2C1_SCL,UART5_TXD
13
PB.7,UART1_nCTS
45
PA.1,PWM0_CH5,ADC1,I2C1_SDA,UART5_RXD
14
LDO_CAP
46
PA.2,PWM1_CH0,ADC2,UART3_TXD
15
VDD
47
PA.3,PWM1_CH1,ADC3,UART3_RXD
16
VSS
48
PA.4,ADC4
17
PB.0,UART0_RXD
49
PA.5,UART3_RXD,ADC5
18
PB.1,UART0_TXD
50
PA.6,UART3_TXD,ADC6

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19
PB.2,UART0_nRTS,TM2_EXT,TM2,PWM1_BRAK
E1
51
PA.7,Vref,ADC7
20
PB.3,UART0_nCTS,TM3_EXT,TM3,PWM1_BRAK
E0
52
AVDD
21
PD.6,BPWM1_CH1,CAN0_RXD
53
PC.7,PWM0_BRAKE1,I2C0_SCL,UART4_RXD
22
PD.7,BPWM1_CH0,CAN0_TXD
54
PC.6,PWM0_BRAKE0,I2C0_SDA,UART4_TXD
23
PD.14,BPWM0_CH5,UART2_RXD
55
PC.15
24
PD.15,BPWM0_CH4,UART2_TXD
56
PC.14
25
PC.3,BPWM0_CH3,SPI0_MOSI0
57
PB.15, ,BPWM1_CH5TM0,TM0_EXT,INT1
26
PC.2,BPWM0_CH2,SPI0_MISO0
58
PF.0,XT1_OUT
27
PC.1,BPWM0_CH1,SPI0_CLK
59
PF.1,XT1_IN
28
PC.0,BPWM0_CH0,SPI0_SS0
60
nRESET
29
PE.5,PWM0_CH5,TM1_EXT,TM1
61
VSS
30
PB.11,TM3,PWM0_CH4
62
VDD
31
PB.10,TM2
63
PF.8, PWM1_CH4,CLKO
32
PB.9,TM1
64
PB.8,BPWM1_CH2,CLKO,TM0,STADC
Table 3-4 Pin Assignment for NUC131SD2AE
3.3 NuMaker UNO NUC131SD2AE Extended Connectors Layout
NuMaker UNO
USB
JACK
Power
Jack
NuLink-Me
PA.5 49
PA.7 51
53PC.7
55PC.15
57PB.15
59PF.1
61Vss
63PF.8
PB.12 3
PF.4 5
7PA.10
9PA.8
11PB.5
13PB.7
PA.650
64 PB.8
62 Vdd
nRESET
60
58 PF.0
56 PC.14
54 PC.6
52 AVdd
14 LDO_CAP
PB.612
10 PB.4
8 PA.9
6 PA.11
4 PF.5
PB.14 1 2 PB.13
15Vdd 16 Vss
PA.4 48
PA.2 46
44PA.0
42PF.6
40PA.12
38PA.14
36PC.8
34PC.10
PB.11 30
PC.0 28
26PC.2
24PD.15
22PD.7
20PB.3
PA.347
33 PC.11
35 PC.9
PA.1637
39 PA.13
41 PF.7
43 Avss
45 PA.1
19 PB.2
PD.621
23 PD.14
25 PC.3
27 PC.1
29 PE.5
PB.9 32 31 PB.10
18PB.1 17 PB.0
NUC131
SD2AE
Reset
Figure 3-3 NuMaker UNO NUC131SD2AE Extended Connectors Layout

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3.4 Arduino UNO Pin Assignment for NuMaker UNO
The NuMaker UNO provides the NUC131SD2AE target chip on board and the Arduino UNO
extended connectors (NU1, NU2, NU3, NU4 and NU5) for LQFP64-pin. Table 3-5 shows the
pin assignment for NuMaker UNO.
Pin No
Odel
Pin Name
Pin No
Pin Name
Clock Output
1
CLKO
5
5V
Power
2
VCC
6
GND
3
RESET
7
GND
4
3.3V
8
Vin
Analog
1
A0
4
A3
2
A1
5
A4
3
A2
6
A5
Digital
0
PB.0/UART_RX0
9
PA.14/PWM0_CH2
1
PB.1/UART_TX0
10
PA.13/PWM0_CH1
2
PF.4/PWM1_CH4
11
PA.12/PWM0_CH0
3
PF.5/PWM1_CH5
12
PB.15/TM0/INT1
4
PA.10/PWM1_CH2
13
PB.13(LED)
5
PA.11/PWM1_CH3
VSS
VSS
6
PA.15/PWM0_CH3
VREF
VREF
7
PE.5/PWM0_CH5
I2C
PA.8/SDA
8
PB.11/PWM0_CH4
I2C
PA.9/SCL
SPI
Interface
1
PC.2/SPI0_MISO
5
RESET
2
VDD
6
GND
3
PC.1/SPI0_CLK
7
PC.0/SPI0_SS
4
PC.3/SPI0_MOSI
8
PB.9/TM1
Table 3-5 Pin Assignment for NuMaker UNO

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3.5 NuMaker UNO Arduino Layout
Figure 3-4 NuMaker UNO Pin Design for Arduino

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3.6 NuMaker UNO PCB Placement
Figure 3-5 NuMaker UNO PCB Placement

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4 DOWNLOADING AND INSTALLING ARDUINO IDE 1.8.5 AND NUMAKER
UNO SOFTWARE
4.1 Downloading and Installing Arduino IDE 1.8.5 Software
Please visit the Arduino official website (http://www.arduino.cc/en/Main/software) to download
and install the Arduino IDE 1.8.5. Currently it is recommended to install Arduino IDE 1.8.5 for
Windows version, since the other operating system has not been verified.
The Arduino IDE 1.8.5 installation steps are as follows:
4.1.1 Step 1: Download Arduino IDE 1.8.5 software
Visit https://www.arduino.cc/en/Main/Software, and download the latest Arduino.
Figure 4-1 Find and Click “previous version of the current release”

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4.1.2 Step 2: Check if download file is version 1.8.5
Click on download.
Figure 4-2 Find and Download Arduino 1.8.5
4.1.3 Step 4: Install the “Arduino-1.8.5-windows.exe” file
Double click on the “arduino-1.8.5-windows.exe”and click “Run”.
Figure 4-5 Install arduino-1.8.5-windows.exe Installation File

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4.1.4 Step 5: Select the installation folder
Select the installation folder and click “Install”.
Figure 4-6 Install arduino-1.8.5-windows.exe to Installation Folder
4.1.5 Step 6: Wait for the installation is complete
Wait the installation process until it is finished. It will take about 2 minutes to install arduino-
1.8.5-windows file to the installation folder.
Figure 4-7 Install arduino-1.8.5-windows to Installation Folder
After installation is finished, two executable files can be found in the Arduino 1.8.5 installation
directory, including arduino.exe and arduino_debug.exe. Both files are able to start the Arduino

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IDE program. As for the arduino_debug.exe, you can open the debug window. When the
program is executed or compiled, the debug window will open for users to check which part of
the problem occurs.
Figure 4-8 Arduino 1.8.5 Installation Directory
4.2 Installing Nu-Link USB Driver for Arduino IDE 1.8.5
Please visit the Nuvoton NuMaker UNO official website (www.nuvoton.com/NuMaker_UNO) to
download “Nu-Link USB Driver”.
Note: It is recommended to use Arduino IDE version 1.8.5.
The Nu-Link USB Driver installation steps are as follows:
4.2.1 Step 1: Download Nu-Link USB Driver
Visit www.nuvoton.com/NuMaker_UNO and find Resources. Click on “Nu-Link USB Driver”.
Figure 4-9 Find and Click Nu-Link USB Driver

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4.2.2 Step 2: Select the installation folder
Select the installation folder and click “Next”to install.
Figure 4-10 Installing Nu-Link USB Driver
4.2.3 Step 3: Run Arduino IDE 1.8.5
Go to File →Preferences, enter the following URL to textbox of ‘Additional Board Manager
URLs’
https://raw.githubusercontent.com/OpenNuvoton/NuMaker-
UNO/master/package_nuvoton_index.json
Figure 4-11 Arduino IDE 1.8.5 Select File and Click Preferences

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Figure 4-12 Enter the NuMaker UNO Board’s URL to ‘Additional Board Manager URLs’
4.2.4 Step 4: Install NuMaker UNO on Arduino IDE 1.8.5 Boards Manager
Go to Tools →Board →Boards Manager on Arduino IDE 1.8.5.
Figure 4-13 Click Boards Manager on Arduino IDE 1.8.5

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Search “MuMaker”and the NuMaker UNO will show up on the list. Select NuMaker UNO
and click install.
Figure 4-14 Select NuMaker UNO and Click Install
4.2.5 Step 5: Select NuMaker UNO on Arduino IDE 1.8.5 Board Selection
After the package download is finished, go to Tools →Board and select NuMaker UNO to
use it.
Figure 4-15 Select NuMaker UNO on Board Selection to Use It

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4.3 Hardware Setup
Hardware connections are shown in the figure below. Use a mini USB to connect to a
computer.
Figure 4-16 NuMaker UNO Connected to Computer
4.4 Testing USB and VCOM Device in the Device Manager
Before connecting the NuMaker UNO development board to the computer, please enable SW2
of VCOM Function. All the SW2 pins shall be turned on. Please refer to section 3.1.2. Open the
device manager and check if the USB is detected. If it is not detected, please reinstall the Nu-
Link USB Driver.
Figure 4-17 USB Device Detected by Device Manager