Nuvoton NuMaker-M071VG User manual

NuMaker-M071VG
Dec. 21, 2022 Page 1of 48 Rev 1.01
NUMAKER-M071VG USER MANUAL
Maker Nu-mbed NUC472 User Manual
NuMicro® Family
Arm®Cortex®-M0-based Microcontroller
NuMaker-M071VG
User Manual
Evaluation Board for NuMicro®M071 Series
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 and
microprocessor 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......................................................................................................7
2FEATURES......................................................................................................8
3HARDWARE CONFIGURATION.....................................................................9
3.1 Front View....................................................................................................................... 9
3.2 Rear View ..................................................................................................................... 10
3.3 Extension Connectors................................................................................................. 11
3.3.1 Pin Assignment for Extension Connectors .................................................................11
3.3.2 Arduino UNO Compatible Extension Connectors......................................................16
3.4 Power Supply Configuration ...................................................................................... 18
3.4.1 VIN Power Source..........................................................................................................18
3.4.2 5 V Power Sources ........................................................................................................18
3.4.33.3 V Power Sources .....................................................................................................19
3.4.4 1.8 V Power Sources .....................................................................................................19
3.4.5 Power Connectors..........................................................................................................19
3.4.6 USB Connectors .............................................................................................................20
3.4.7 Power Switches ..............................................................................................................20
3.4.8 Power Supply Models ....................................................................................................20
3.5External Reference Voltage Connector.................................................................... 24
3.6 Ammeter Connector.................................................................................................... 24
3.7 Push Buttons................................................................................................................ 24
3.8 LEDs.............................................................................................................................. 25
3.9 Nu-Link2-Me................................................................................................................. 25
3.9.1 VCOM Switches..............................................................................................................25
3.9.2 Status LEDs ....................................................................................................................26
4QUICK START...............................................................................................27
4.1 Toolchains Supporting ................................................................................................ 27
4.2Nuvoton Nu-Link Driver Installation.......................................................................... 27
4.3 BSP Firmware Download ........................................................................................... 29
4.4 Hardware Setup........................................................................................................... 29
4.5 Find the Example Project ........................................................................................... 31
4.6 Execute the Project under Toolchains...................................................................... 31
4.6.1 Keil MDK..........................................................................................................................31
4.6.2 IAR EWARM....................................................................................................................35
4.6.3 NuEclipse.........................................................................................................................37
5NUMAKER-M071VG SCHEMATICS .............................................................43
5.1 Nu-Link2-Me................................................................................................................. 43

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5.2 M071 Target Board...................................................................................................... 44
5.3 Extension Connectors................................................................................................. 45
5.4 PCB Placement ........................................................................................................... 46
6REVISION HISTORY .....................................................................................47

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List of Figures
Figure 1-1 NuMaker-M071VG Evaluation Board............................................................................. 7
Figure 3-1 Front View of NuMaker-M071VG ................................................................................... 9
Figure 3-2 Rear View of NuMaker-M071VG.................................................................................. 10
Figure 3-3 M071VG4AE Extension Connectors ............................................................................ 11
Figure 3-4 Arduino UNO Compatible Extension Connectors......................................................... 16
Figure 3-5 External Power Supply Sources on Nu-Link2-Me ........................................................ 20
Figure 3-6 External Power Supply Sources on NuMaker-M071VG Target Board......................... 21
Figure 3-7 Detach the Nu-Link2-Me from NuMaker-M071VG....................................................... 22
Figure 3-8 Wiring between Ammeter Connector and Ammeter..................................................... 24
Figure 4-1 Nu-Link USB Driver Installation Setup.......................................................................... 27
Figure 4-2 Nu-Link USB Driver Installation.................................................................................... 28
Figure 4-3 Open VCOM Function .................................................................................................. 29
Figure 4-4 ICE USB Connector...................................................................................................... 29
Figure 4-5 Device Manger.............................................................................................................. 30
Figure 4-6 PuTTY Session Setting................................................................................................. 30
Figure 4-7 Template Project Folder Path....................................................................................... 31
Figure 4-8 Warning Message of “Device not found” ...................................................................... 31
Figure 4-9 Project File Migrate to Version 5 Format...................................................................... 32
Figure 4-10 Debugger Setting in Options Window......................................................................... 32
Figure 4-11 Programming Setting in Options Window................................................................... 33
Figure 4-12 Compile and Download the Project............................................................................ 33
Figure 4-13 Keil MDK Debug Mode............................................................................................... 34
Figure 4-14 Debug Message on Serial Port Terminal Windows.................................................... 34
Figure 4-15 IAR EWARM Window................................................................................................. 35
Figure 4-16 Compile and Download the Project............................................................................ 35
Figure 4-17 IAR EWARM Debug Mode ......................................................................................... 36
Figure 4-18 Debug Message on Serial Port Terminal Windows.................................................... 36
Figure 4-19 Import the Project in NuEclipse .................................................................................. 37
Figure 4-20 Import Projects Windows............................................................................................ 37
Figure 4-21 Open Project Properties Window ............................................................................... 38
Figure 4-22 Project Properties Settings......................................................................................... 38
Figure 4-23 Build Project................................................................................................................ 39
Figure 4-24 Open Debug Configuration......................................................................................... 39
Figure 4-25 Main Tab Configuration .............................................................................................. 40
Figure 4-26 Debugger Tab Configuration ...................................................................................... 40
Figure 4-27 Startup Tab Configuration .......................................................................................... 41

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Figure 4-28 NuEclipse Debug Mode.............................................................................................. 42
Figure 4-29 Debug Message on Serial Port Terminal Windows.................................................... 42
Figure 5-1 Nu-Link2-Me Circuit...................................................................................................... 43
Figure 5-2 NuMaker-M071VG Target Board Circuit ...................................................................... 44
Figure 5-3 Extension Connectors Circuit ....................................................................................... 45
Figure 5-4 Front Placement ........................................................................................................... 46
Figure 5-5 Rear Placement............................................................................................................ 46

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List of Tables
Table 3-1 Extension Connectors.................................................................................................... 11
Table 3-2 M071VG4AE Full-pin Extension Connectors and GPIO Function List.......................... 15
Table 3-3 Arduino UNO Extension Connectors and M071VG4AE Mapping GPIO List ................ 17
Table 3-4 Vin Power Source.......................................................................................................... 18
Table 3-5 5 V Power Sources........................................................................................................ 18
Table 3-6 3.3 V Power Sources..................................................................................................... 19
Table 3-7 1.8 V Power Sources..................................................................................................... 19
Table 3-8 Power Connectors ......................................................................................................... 19
Table 3-9 USB Connectors ............................................................................................................ 20
Table 3-10 Power Switches ........................................................................................................... 20
Table 3-11 Supply External Power through Nu-Link2-Me ............................................................. 21
Table 3-12 Supply External Power for NuMaker-M071VG Target Board...................................... 23
Table 3-13 External Reference Voltage Connector....................................................................... 24
Table 3-14 Ammeter Connector..................................................................................................... 24
Table 3-15 Push-Buttons ............................................................................................................... 24
Table 3-16 LEDs ............................................................................................................................ 25
Table 3-17 VCOM Function of Nu-Link2-Me.................................................................................. 25
Table 3-18 Operation Status LED Patterns ................................................................................... 26

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1 OVERVIEW
The NuMaker-M071VG is an evaluation board for Nuvoton NuMicro M071VG4AE microcontrollers.
The M071VG4AE integrates 2 KB SPROM (Security Protection ROM) to provide a secure code
execution area to protect the developer's intellectual property. The In-System Programmer (ISP) with 8
KB Loader ROM (LDROM) supports firmware updates through the Firmware Over-The-Air (FOTA)
process. The NuMaker-M071VG consists of two parts: an NuMaker-M071VG target board and an on-
board Nu-Link2-Me debugger and programmer. The NuMaker-M071VG is designed for project
evaluation, prototype development and validation with power consumption monitoring function.
The NuMaker-M071VG target board is based on NuMicro M071VG4AE. For the development
flexibility, the NuMaker-M071VG target board provides the extension connectors of M071VG4AE, the
Arduino UNO compatible headers and the capability of adopting multiple power supplies. Furthermore,
the Nuvoton-designed ammeter connector can measure the power consumption instantly, which is
essential for the prototype evaluation.
In addition, there is an attached on-board debugger and programmer “Nu-Link2-Me”. The Nu-Link2-
Me supports on-chip debugging, online and offline ICP programming via SWD interface. The Nu-
Link2-Me supports virtual COM (VCOM) port for printing debug messages on PC. Besides, the
programming status could be shown on the built-in LEDs. Lastly, the Nu-Link2-Me could be detached
from the evaluation board and become a stand-alone mass production programmer.
Figure 1-1 NuMaker-M071VG Evaluation Board

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2 FEATURES
NuMicro M071VG4AE used as main microcontroller.
M071VG4AE full pin extension connectors
Arduino UNO compatible extension connectors
Ammeter connector for measuring the microcontroller’s power consumption
Flexible board power supply:
–External VDD power connector
–Arduino UNO compatible extension connector Vin
–ICE USB connector on Nu-Link2-Me
On-board Nu-Link2-Me debugger and programmer:
–Debug through SWD interface
–Online/offline programming
–Virtual COM port function

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3 HARDWARE CONFIGURATION
3.1 Front View
ICE USB Connector
VCOM Switch
Reset Button
ICE Status LED
Off-line Program Button
USB PWR Connector
Power LED
PB14 LED
VDD Switch
M071VG4AE M071VG4AE Extension Connectors
Arduino UNO Compatible Extension Connectors
External VDD Connector
Nu-Link2-Me
Ammeter
ICE Chip: M48SSIDAE
External VSS Connector
NuMaker-M071VG Target Board
External VREF Connector
Figure 3-1 Front View of NuMaker-M071VG
Figure 3-1 shows the main components and connectors from the front side of NuMaker-M071VG. The
following lists components and connectors from the front view:
Target chip: M071VG4AE (U1)
USB PWR Connector (J2)
Arduino UNO Compatible Extension Connectors (NU1, NU2, NU3, NU4)
M071VG4AE Extension Connectors (JP3, JP4, JP5 and JP6)
External VDD Power Connector (JP1)
External VSS Power Connector (JP2)
External VREF Connector (VREF1)
VDD Switch (SW2)
Ammeter Connector (AMMETER)
Reset Button (SW1)
Power LED and PB14 LED (LEDG1 and LEDR1)
Nu-Link2-Me
–VCOM Switch
–ICE Chip: M48SSIDAE (ICEU2)
–ICE USB Connector (ICEJ3)
–ICE Status LED (ICES0, ICES1, ICES2, ICES3)
–Off-line Program Button (ICESW1)

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3.2 Rear View
Figure 3-2 shows the main components and connectors from the rear side of NuMaker-M071VG.
The following lists components and connectors from the rear view:
Nu-Link2-Me
–MCUVCC Power Switch (ICEJPR1)
–ICEVCC Power Switch (ICEJPR2)
ICEVCC Power Switch
MCUVCC Power Switch
Figure 3-2 Rear View of NuMaker-M071VG

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3.3 Extension Connectors
Table 3-1 presents the extension connectors.
Connector
Description
JP3, JP4, JP5 and JP6
Full pins extension connectors on the NuMaker-M071VG.
NU1, NU2, NU3 and NU4
Arduino UNO compatible pins on the NuMaker-M071VG.
Table 3-1 Extension Connectors
3.3.1 Pin Assignment for Extension Connectors
The NuMaker-M071VG provides the M071VG4AE onboard and extension connectors (JP3, JP4, JP5
and JP6). Figure 3-3 shows the M071VG4AE extension connectors.
JP3
Pin1 ~ Pin16
JP6
Pin49 ~ Pin64
JP5 Pin17 ~ Pin32
JP4 Pin33 ~ Pin48
Figure 3-3 M071VG4AE Extension Connectors

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Header
M071VG4AE
Pin No.
Function
JP3
JP3.1
1
PB.13 / ADC0_CH10
JP3.2
2
PB.14 / ADC0_CH11
JP3.3
3
PB.15 / ADC0_CH12 / ACMP0_P3 / EBI_nCS1
JP3.4
4
PB.5 /ADC0_CH13 / SPI0_MOSI / SPI1_MOSI / ACMP0_P2 / SC1_RST /EBI_AD6 /
UART2_RXD
JP3.5
5
PB.6 / ADC0_CH14 / SPI0_MISO / SPI1_MISO / ACMP0_P1 / SC1_PWR / EBI_AD5
JP3.6
6
PB.7 / ADC0_CH15 / SPI0_CLK / SPI1_CLK / USCI2_CTL1 / ACMP0_P0 / SC1_DAT /
EBI_AD4
JP3.7
7
nRESET
JP3.8
8
PD.0 / SPI0_I2SMCLK / SPI1_I2SMCLK / UART0_RXD / USCI2_CTL0 / ACMP1_N /
SC1_CLK / INT3
JP3.9
9
AVSS
JP3.10
10
VDD
JP3.11
11
VSS
JP3.12
12
PC.8 / ADC0_CH16 / UART0_nRTS
JP3.13
13
PD.8 / ADC0_CH17 / UART0_nCTS / USCI2_CTL1 / TM2/EBI_nCS0
JP3.14
14
PD.9 / ADC0_CH18 / UART0_RXD / USCI2_CTL0 / ACMP1_P3 / TM3/EBI_ALE
JP3.15
15
PD.1 / ADC0_CH19 / PWM0_SYNC_IN / UART0_TXD / USCI2_CLK / ACMP1_P2 / TM0
/ EBI_nRD
JP3.16
16
PD.2 / ADC0_ST / TM0_EXT / USCI2_DAT0 / ACMP1_P1 / PWM0_BRAKE0 / EBI_nWR
/ INT0
JP3.17
17
PD.3 / TM2 / SPI0_I2SMCLK / TM1_EXT / USCI2_DAT1 / ACMP1_P0 / PWM0_BRAKE1
/ EBI_MCLK / INT1
JP3.18
18
PD.4 / SPI1_CLK / I2C0_SDA / UART2_nRTS / PWM0_BRAKE0 / TM0
JP3.19
19
PD.5 / CLKO / SPI1_MISO / I2C0_SCL / UART2_nCTS / PWM0_BRAKE1 / TM1
JP3.20
20
PE.3 / SPI1_MOSI / UART2_RXD / PWM0_CH3
JP3.21
21
PD.6 / CLKO / SPI1_SS / UART0_RXD / UART2_TXD / ACMP0_O / PWM0_CH5 /
EBI_nWR
JP3.22
22
VBAT
JP3.23
23
PF.0 / X32_OUT / USCI2_CTL1 / INT5
JP3.24
24
PF.1 / X32_IN / USCI2_CTL0 / PWM1_BRAKE0
JP3.25
25
PF.2 / USCI2_CLK / PWM1_BRAKE1
JP5
JP5.2
26
PD.10 / TM2 / USCI2_DAT0
JP5.1
27
PD.11 / TM3 / USCI2_DAT1
JP5.4
28
PD.12 / USCI1_CTL0 / SPI1_SS / UART0_TXD / PWM1_CH0 / EBI_ADR16
JP5.3
29
PD.13 / USCI1_DAT1 / SPI1_MOSI / UART0_RXD / PWM1_CH1 / EBI_ADR17
JP5.6
30
PD.14 / USCI1_DAT0 / SPI1_MISO / UART0_nCTS / PWM1_CH2 / EBI_ADR18
JP5.5
31
PD.15 / USCI1_CLK / SPI1_CLK / UART0_nRTS / PWM1_CH3 / EBI_ADR19

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Header
M071VG4AE
Pin No.
Function
JP5.8
32
PD.7/USCI1_CTL1/SPI0_I2SMCLK/PWM0_SYNC_IN/TM1/ACMP0_O/PWM0_CH5/EBI_nRD
JP5.7
33
PF.3/XT1_OUT/I2C1_SCL
JP5.10
34
PF.4/XT1_IN/I2C1_SDA
JP5.9
35
VSS
JP5.12
36
VDD
JP5.11
37
LDO_CAP
JP5.14
38
PC.9/SPI0_I2SMCLK/I2C1_SCL/USCI2_CTL1/PWM1_CH0
JP5.13
39
PC.10/SPI0_MOSI/I2C1_SDA/USCI2_DAT1/PWM1_CH1
JP5.16
40
PC.11/SPI0_MISO/USCI2_CLK/PWM1_CH2
JP5.15
41
PC.12/SPI0_CLK/USCI2_CTL0/PWM1_CH3
JP5.18
42
PC.13/SPI0_SS/USCI2_DAT0/PWM1_CH4
JP5.17
43
PC.14/PWM1_CH5
JP5.20
44
PC.0/SC0_DAT/SPI0_CLK/UART2_nCTS/USCI0_DAT0/ACMP0_WLAT/PWM0_CH0/EBI_AD8/INT2
JP5.19
45
PC.1/CLKO/SC0_CLK/UART2_nRTS/USCI0_DAT1/ACMP1_WLAT/PWM0_CH1/EBI_AD9
JP5.22
46
PC.2/SC0_RST/SPI0_SS/UART2_TXD/USCI0_CTL1/ACMP1_O/PWM0_CH2/EBI_AD10
JP5.21
47
C.3/SC0_PWR/SPI0_MOSI/UART2_RXD/USCI0_CTL0/PWM0_CH3/EBI_AD11
JP5.24
48
PC.4/SC0_nCD/SPI0_MISO/I2C1_SCL/USCI0_CLK/PWM0_CH4/EBI_AD12
JP5.23
49
PE.0/SPI0_CLK/I2C1_SDA/TM2_EXT/SC0_nCD/PWM0_CH0/EBI_nCS1/INT4
JP5.26
50
PC.5/SPI0_I2SMCLK/I2C1_SDA/USCI0_DAT0/PWM0_CH5/EBI_AD13
JP4
JP4.1
51
PC.6 / USCI0_DAT1 / ACMP1_O / PWM1_CH0 / EBI_AD14
JP4.2
52
PC.7 / USCI0_CTL1 / PWM1_CH1 / EBI_AD15
JP4.3
53
PE.4 / I2C0_SCL / I2C1_SCL / USCI0_CTL0 / SC0_PWR / PWM1_BRAKE0 / EBI_nCS0
/ INT0
JP4.4
54
PE.5 / I2C0_SDA / I2C1_SDA / USCI0_CLK / SC0_RST / PWM1_BRAKE1 / EBI_ALE /
INT1
JP4.5
55
PE.6 / ICE_CLK / I2C0_SCL / UART0_RXD
JP4.6
56
PE.7 / ICE_DAT / I2C0_SDA / UART0_TXD
JP4.7
57
PA.8 / CLKO / I2C1_SCL / UART1_TXD / SC0_PWR / SC1_RST / TM_BRAKE0 /
PWM0_BRAKE0 / TM1
JP4.8
58
PA.9 / SPI1_I2SMCLK / I2C1_SDA / UART1_RXD / SC0_RST / SC1_PWR /
TM_BRAKE1 / PWM1_BRAKE1 / TM2
JP4.9
59
PA.10 / UART1_nCTS / SC1_DAT
JP4.10
60
PA.11 / UART1_nRTS / SC1_CLK
JP4.11
61
PF.5 / TM3_EXT / SC1_nCD / TM_BRAKE0
JP4.12
62
PA.7 / SPI1_CLK / TM0_EXT / TM_BRAKE1 / EBI_AD7
JP4.13
63
PA.6 / SPI1_MISO / TM1_EXT / TM_BRAKE2 / EBI_AD6
JP4.14
64
PA.5 / SPI1_MOSI / TM2_EXT / TM_BRAKE3 / EBI_AD5

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Header
M071VG4AE
Pin No.
Function
JP4.15
65
PA.4 / SPI1_SS / TM3_EXT / EBI_AD4
JP4.16
66
VSS
JP4.17
67
VDD
JP4.18
68
PE.1 / TM3_EXT / SC0_nCD / PWM0_CH1
JP4.19
69
PE.8 / UART1_TXD / TM0 / I2C1_SCL / SC0_PWR
JP4.20
70
PE.9 / UART1_RXD / TM1 / I2C1_SDA / SC0_RST
JP4.21
71
PE.10 / SPI1_MISO / SPI0_MISO / UART1_nCTS / SC0_DAT / SPI1_CLK / EBI_AD7 /
TM0_EXT
JP4.22
72
PE.11 / SPI1_MOSI / SPI0_MOSI / UART1_nRTS / SC0_CLK / SPI1_MISO / EBI_AD6 /
TM1_EXT
JP4.23
73
PE.12 / SPI1_SS / SPI0_SS / UART1_TXD / I2C0_SCL / SPI1_MOSI / EBI_AD5 /
TM2_EXT
JP4.24
74
PE.13 / SPI1_CLK / SPI0_CLK / UART1_RXD / I2C0_SDA / SPI1_SS / EBI_AD4 /
TM3_EXT
JP4.25
75
VDDIO
JP6
JP6.1
76
PF.6
JP6.2
77
PC.15 / PWM1_CH0
JP6.3
78
PB.12 / PWM1_CH1
JP6.4
79
PA.3 / UART0_RXD / UART0_nRTS / I2C0_SCL / SC0_PWR / PWM1_CH2 /
PWM1_CH2 / USCI1_CLK
JP6.5
80
PA.2 / UART0_TXD / UART0_nCTS / I2C0_SDA / SC0_RST / PWM1_CH3 / EBI_AD2 /
USCI1_CTL0
JP6.6
81
PA.1 / UART1_nRTS / UART1_RXD / USCI1_CTL1 / SC0_DAT / PWM1_CH4 / EBI_AD1
JP6.7
82
PA.0 / UART1_nCTS / UART1_TXD / USCI1_CTL0 / SC0_CLK / PWM1_CH5 / EBI_AD0
/ INT0
JP6.8
83
PA.12 / SPI1_I2SMCLK / UART2_RXD / UART1_RXD / TM_BRAKE2
JP6.9
84
PA.13 / UART2_TXD / UART1_TXD / TM_BRAKE3
JP6.10
85
PA.14 / UART2_nCTS / USCI1_CTL1 / TM2
JP6.11
86
PA.15 / UART2_nRTS / USCI1_CLK / TM3
JP6.12
87
VSS
JP6.13
88
VDD
JP6.14
89
AVDD
JP6.15
90
VREF
JP6.16
91
PB.0 / ADC0_CH0 / VDET_P0 / UART2_RXD / TM2 / USCI1_DAT0 / EBI_nWRL / INT1 /
TM1_EXT
JP6.17
92
PB.1 / ADC0_CH1 / VDET_P1 / UART2_TXD / TM3 / SC0_RST / PWM0_SYNC_OUT /
EBI_nWRH / USCI1_DAT1
JP6.18
93
PB.2 / ADC0_CH2 / SPI0_CLK / SPI1_CLK / UART1_RXD / SC0_nCD / TM_BRAKE0 /
EBI_nCS0 / USCI0_DAT0 / TM2_EXT
JP6.19
94
PB.3 / ADC0_CH3 / SPI0_MISO / SPI1_MISO / UART1_TXD / TM_BRAKE1 / EBI_ALE /
USCI0_DAT1 / TM0_EXT
JP6.20
95
PB.4 / ADC0_CH4 / SPI0_SS / SPI1_SS / UART1_nCTS / ACMP0_N / SC1_nCD /
EBI_AD7 / USCI0_CTL1 / UART2_RXD / TM1_EXT
JP6.21
96
PB.8 / ADC0_CH5 / UART1_nRTS / TM_BRAKE2 / PWM0_CH2 / USCI0_CTL0

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Header
M071VG4AE
Pin No.
Function
JP6.22
97
PB.9 / ADC0_CH6 / USCI0_CLK
JP6.23
98
PB.10 / ADC0_CH7
JP6.24
99
PB.11 / ADC0_CH8
JP6.26
100
PE.2 / UART1_nRTS / TM_BRAKE3 / PWM0_CH2 / USCI0_CTL0
Table 3-2 M071VG4AE Full-pin Extension Connectors and GPIO Function List

NuMaker-M071VG
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NUMAKER-M071VG USER MANUAL
Maker Nu-mbed NUC472 User Manual
3.3.2 Arduino UNO Compatible Extension Connectors
Figure 3-4 shows the Arduino UNO compatible extension connectors.
MISO CLK RESET SS
PD.14 PD.15 nRESET PD.12
USCI1_DAT1 USCI1_CLK
5V MOSI GND -
VDD PD.13 VSS PD.6
USCI1_DAT0
PWM0_CH0 PE.0 D8
PWM0_CH5 PC.5 D9
SPI0_SS PE.12 D10
SPI0_MOSI PE.11 D11
SPI0_MISO PE.10 D12
SPI0_CLK PE.13 D13
VSS VSS
VREF VREF
I2C1_SDA PE.5 SDA
I2C1_SCL PE.4 SCL
UART2_RXD PWM0_CH3 PC.3 D0
UART2_TXD PWM0_CH2 PC.2 D1
PWM1_CH0 PC.9 D2
PWM1_CH1 PC.10 D3
PWM1_CH2 PC.11 D4
PWM1_CH3 PC.12 D5
PWM1_CH4 PC.13 D6
PWM1_CH5 PC.14 D7
VIN
VSS
VSS
5V
3V
RST
IOREF VDD
NC
A5 PB.1 ADC0_CH1
A4 PB.0 ADC0_CH0
A3 PB.7 ADC0_CH15
A2 PB.6 ADC0_CH14
A1 PB.5 ADC0_CH13
A0 PB.15 ADC0_CH12
Figure 3-4 Arduino UNO Compatible Extension Connectors

NuMaker-M071VG
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NUMAKER-M071VG USER MANUAL
Maker Nu-mbed NUC472 User Manual
Header
NuMaker-M071VG
Header
NuMaker-M071VG
Compatible to
Arduino UNO
GPIO Pin of
NuMaker-M071VG
Compatible to
Arduino UNO
GPIO Pin of
NuMaker-M071VG
NU3
NU3.1
D0
PC.3
NU2
NU2.6
A5
PB.1
NU3.2
D1
PC.2
NU2.5
A4
PB.0
NU3.3
D2
PC.9
NU2.4
A3
PB.7
NU3.4
D3
PC.10
NU2.3
A2
PB.6
NU3.5
D4
PC.11
NU2.2
A1
PB.5
NU3.6
D5
PC.12
NU2.1
A0
PB.15
NU3.7
D6
PC.13
NU1
NU1.8
VIN
-
NU3.8
D7
PC.14
NU1.7
VSS
NU4
NU4.1
D8
PE.0
NU1.6
VSS
NU4.2
D9
PE.5
NU1.5
5V
NU4.3
D10
PE.12
NU1.4
3V
NU4.4
D11
PE.11
NU1.3
RST
nRESET
NU4.5
D12
PE.10
NU1.2
IOREF
VREF
NU4.6
D13
PE.13
NU1.1
NC
-
NU4.7
VSS
VSS
NU4.8
VREF
VREF
NU4.9
SDA
PE.5
NU4.10
SCL
PE.4
Table 3-3 Arduino UNO Extension Connectors and M071VG4AE Mapping GPIO List

NuMaker-M071VG
Dec. 21, 2022 Page 18 of 48 Rev 1.01
NUMAKER-M071VG USER MANUAL
Maker Nu-mbed NUC472 User Manual
3.4 Power Supply Configuration
The NuMaker-M071VG is able to adopt multiple power supplies. External power sources include NU1
Vin (7 V to 12 V), VDD (depending on the target chip operating voltage), and PC through USB
connector. By using switches and voltage regulator, multiple power domains can be created on the
NuMaker-M071VG.
3.4.1 VIN Power Source
Table 3-4 presents the Vin power source.
Connector
Net Name in
Schematic
Description
NU1 pin8
NU1_VIN
Board external power source, with voltage range from 7
V to 12 V. The voltage regulator UP2 converts the NU1
pin8 input voltage to 5 V and supplies it to NU1_5VCC.
Table 3-4 Vin Power Source
3.4.2 5 V Power Sources
Table 3-5 presents the 5 V power sources.
Connector
Net Name in
Schematic
Description
ICEJ3
USB_HS_VBUS
ICE USB connector supplies 5 V power from PC to
GPIO Pin of NuMaker-M071VG target board and Nu-
Link2-Me.
J2
USB_VBUS
USB connector on NuMaker-M071VG supplies 5 V
power from PC to NuMaker-M071VG target board and
Nu-Link2-Me.
NU1 pin5
NU1_5VCC
ICEJ3, J2 or NU1 pin8 supplies 5 V power to NU1 pin5.
NU1 pin5 supplies 5 V power to target chip or Arduino
adapter board.
Note: NuMaker-M071VG operating voltage range is
from 2.5 V to 5.5 V.
Table 3-5 5 V Power Sources

NuMaker-M071VG
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NUMAKER-M071VG USER MANUAL
Maker Nu-mbed NUC472 User Manual
3.4.3 3.3 V Power Sources
Table 3-6 presents the 3.3 V power sources.
Voltage Regulator
5 V Source
Description
ICEUP1
USB_HS_VBUS
ICEUP1 converts USB_HS_VBUS to 3.3 V and supplies
3.3 V to NuMaker-M071VG target board or ICE chip.
UP1
USB_VBUS
UP1 converts USB_VBUS to 3.3 V and supplies 3.3 V
to NuMaker-M071VG target board.
Note: SW2.2 (NU1 3VCC) should be switched to ON.
UP1
NU1_5VCC
UP1 converts NU1_5VCC to 3.3 V and supplies 3.3 V to
M071 target board.
Note: SW2.2 (NU1 3VCC) should be switched to ON.
Table 3-6 3.3 V Power Sources
3.4.4 1.8 V Power Sources
Table 3-7 presents the 1.8 V power source.
Voltage Regular
5V Source
Description
ICEUP2
USB_HS_VBUS
ICEUP2 converts USB_HS_VBUS to 1.8 V and supplies
1.8 V to NuMaker-M071VG target board or ICE chip.
Note: NuMaker-M071VG operating voltage range is
from 2.5 V to 5.5 V. Do not change ICEVCC(ICEJPR2)
resistor to 1.8 V.
Table 3-7 1.8 V Power Sources
3.4.5 Power Connectors
Table 3-8 presents the power connectors.
Connector
Description
JP1
VDD connector on the NuMaker-M071VG.
Note: M071VG4AE operating voltage range is from 2.5 V to 5.5 V.
JP2
VSS connector on the NuMaker-M071VG.
Table 3-8 Power Connectors

NuMaker-M071VG
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NUMAKER-M071VG USER MANUAL
Maker Nu-mbed NUC472 User Manual
3.4.6 USB Connectors
Table 3-9 presents the USB connectors.
Connector
Description
ICEJ3
ICE USB connector on Nu-Link2-Me for power supply, debugging and
programming from PC.
J2
USB FS connector on NuMaker-M071VG for power supply.
Table 3-9 USB Connectors
3.4.7 Power Switches
Table 3-10 presents the power switches.
Switch
Description
ICEJPR1
Configures the target chip operating voltage at 1.8 V / 3.3 V / 5 V.
Note: NuMaker-M071VG operating voltage range is from 2.5 V to 5.5 V.
Do not change ICEVCC(ICEJPR2) resistor to 1.8 V.
ICEJPR2
Configures the ICE chip operating voltage at 1.8 V / 3.3 V.
Note: NuMaker-M071VG operating voltage range is from 2.5 V to 5.5 V.
Do not change ICEVCC(ICEJPR2) resistor to 1.8 V.
SW2
Configures the target chip operating voltage at 3.3 V / 5 V
Table 3-10 Power Switches
3.4.8 Power Supply Models
External Power Supply through Nu-Link2-Me to Target Chip
The external power supply source on Nu-Link2-Me is shown in Figure 3-5.
ICE USB Connector (ICEJ3)
Nu-Link2-Me
Figure 3-5 External Power Supply Sources on Nu-Link2-Me