Nuvoton NuMaker-M471KI User manual

NuMaker-M471KI
Nov. 4, 2020 Page 1of 47 Rev 1.00
NUMAKER-M711KI USER MANUAL
Maker Nu-mbed NUC472 User Manual
ARM®Cortex®-M
32-bit Microcontroller
NuMaker-M471KI
User Manual
NuMicro®M471 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 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
Front View...................................................................................... 9
Rear View.....................................................................................10
Extension Connectors.......................................................................11
3.3.1 Pin Assignment for Extension Connectors...................................................... 11
3.3.2 Arduino UNO Compatible Extension Connectors ............................................. 16
Power Supply Configuration ...............................................................18
3.4.1 VIN Power Source.................................................................................. 18
3.4.2 5 V Power Sources ................................................................................. 18
3.4.3 3.3 V Power Sources............................................................................... 19
3.4.4 Power Connectors.................................................................................. 19
3.4.5 USB Connectors .................................................................................... 20
3.4.6 Power Switches..................................................................................... 20
3.4.7 Power Supply Models.............................................................................. 20
External Reference Voltage Connector ..................................................23
Ammeter Connector.........................................................................23
Push Buttons .................................................................................24
LEDs...........................................................................................24
Nu-Link2-Me..................................................................................24
3.9.1 VCOM Switches..................................................................................... 25
3.9.2 Status LEDs ......................................................................................... 25
4Quick Start ............................................................................... 26
Toolchains Supporting ......................................................................26
Nuvoton Nu-Link Driver Installation.......................................................26
BSP Firmware Download...................................................................28
Hardware Setup..............................................................................28
Find the Example Project...................................................................30
Execute the Project under Toolchains....................................................30
4.6.1 Keil MDK ............................................................................................. 30
4.6.2 IAR EWARM......................................................................................... 34
4.6.3 NuEclipse ............................................................................................ 36

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5NuMaker-M471KI Schematics ........................................................ 42
Nu-Link2-Me..................................................................................42
M471 platform................................................................................43
Extension Connector........................................................................44
PCB Placement ..............................................................................45
6REVISION HISTORY................................................................... 46

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List of Figures
Figure 1-1 NuMaker-M471KI Development Board........................................................................... 7
Figure 3-1 Front View of NuMaker-M471KI..................................................................................... 9
Figure 3-2 Rear View of NuMaker-M471KI.................................................................................... 10
Figure 3-3 M471KI8AE 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 M471 platform...................................................... 21
Figure 3-7 Detach the Nu-Link2-Me from NuMaker-M471KI......................................................... 22
Figure 3-8 Wiring between Ammeter Connector and Ammeter..................................................... 24
Figure 4-1 Nu-Link USB Driver Installation Setup.......................................................................... 26
Figure 4-2 Nu-Link USB Driver Installation.................................................................................... 27
Figure 4-3 Open VCOM Function .................................................................................................. 28
Figure 4-4 ICE USB Connector...................................................................................................... 28
Figure 4-5 Device Manger.............................................................................................................. 29
Figure 4-6 PuTTY Session Setting................................................................................................. 29
Figure 4-7 Template Project Folder Path....................................................................................... 30
Figure 4-8 Warning Message of “Device not found” ...................................................................... 30
Figure 4-9 Project File Migrate to Version 5 Format...................................................................... 31
Figure 4-10 Debugger Setting in Options Window......................................................................... 31
Figure 4-11 Programming Setting in Options Window................................................................... 32
Figure 4-12 Compile and Download the Project............................................................................ 32
Figure 4-13 Keil MDK Debug Mode............................................................................................... 33
Figure 4-14 Debug Message on Serial Port Terminal Windows.................................................... 33
Figure 4-15 IAR EWARM Window................................................................................................. 34
Figure 4-16 Compile and Download the Project............................................................................ 34
Figure 4-17 IAR EWARM Debug Mode ......................................................................................... 35
Figure 4-18 Debug Message on Serial Port Terminal Windows.................................................... 35
Figure 4-19 Import the Project in NuEclipse .................................................................................. 36
Figure 4-20 Import Projects Windows............................................................................................ 36
Figure 4-21 Open Project Properties Window ............................................................................... 37
Figure 4-22 Project Properties Settings......................................................................................... 37
Figure 4-23 Build Project................................................................................................................ 38
Figure 4-24 Open Debug Configuration......................................................................................... 38
Figure 4-25 Main Tab Configuration .............................................................................................. 39
Figure 4-26 Debugger Tab Configuration ...................................................................................... 39
Figure 4-27 Startup Tab Configuration .......................................................................................... 40

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Figure 4-28 NuEclipse Debug Mode.............................................................................................. 41
Figure 4-29 Debug Message on Serial Port Terminal Windows.................................................... 41
Figure 5-1 Nu-Link2-Me Circuit...................................................................................................... 42
Figure 5-2 M471 platform Circuit.................................................................................................... 43
Figure 5-3 Extension Connectors Circuit ....................................................................................... 44
Figure 5-4 Front Placement ........................................................................................................... 45
Figure 5-5 Rear Placement............................................................................................................ 45

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List of Tables
Table 3-1 Extension Connectors.................................................................................................... 11
Table 3-2 M471KI8AE Full-pin Extension Connectors and GPIO Function List............................ 15
Table 3-3 Arduino UNO Extension Connectors and M471KI8AE 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 Power Connectors ......................................................................................................... 19
Table 3-8 USB Connectors ............................................................................................................ 20
Table 3-9 Power Switches ............................................................................................................. 20
Table 3-10 Supply External Power through Nu-Link2-Me ............................................................. 21
Table 3-11 Supply External Power for M471 platform................................................................... 23
Table 3-12 External Reference Voltage Connector....................................................................... 23
Table 3-13 Ammeter Connector..................................................................................................... 23
Table 3-14 Push-Buttons ............................................................................................................... 24
Table 3-15 LEDs ............................................................................................................................ 24
Table 3-16 VCOM Function of Nu-Link2-Me.................................................................................. 25
Table 3-17 Operation Status LED Patterns ................................................................................... 25

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1 OVERVIEW
The NuMaker-M471KI is a development board for Nuvoton NuMicro M471KI, M471VI, and M471VG
microcontrollers. The NuMaker-M471KI consists of two parts: an M471 target board and an on-board
Nu-Link2-Me debugger and programmer. The NuMaker-M471KI is designed for project evaluation,
prototype development and validation with power consumption monitoring function.
The M471 target board is based on NuMicro® M471KI8AE. For the development flexibility, the M471
target board provides the extension connectors of M471KI8AE, 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.
The M471 target board includes the Embedded Trace Macrocell (ETM) to trace instructions, the
embedded hardware IR Receiver to do pattern matching and decoding for a remote controller. A
reserved ceramic resonator footprint on the development board can be applied for the 4~24 MHz high-
speed external (HXT) clock.
In addition to the M471 target board, 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 development board and become a stand-alone mass production programmer.
Figure 1-1 NuMaker-M471KI Development Board

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2 FEATURES
NuMicro®M471KI8AE microcontroller with function compatible with:
M471VI8AE
M471VG7AE
M471KI8AE 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
USB connector on M471 platform
ICE USB connector on Nu-Link2-Me
On-board Nu-Link2-Me debugger and programmer:
Debug through SWD interface
On-line/off-line programming
Virtual COM port function

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3 HARDWARE CONFIGURATION
Front View
ICE USB Connector
VCOM Switch
Reset Button
ICE Status LED
Off-line Program Button
USB Connector
Power LED
LED
Input Button
Target Chip: M471KI8AE Target Chip Extension Connector
Arduino UNO Compatible Extension Connector
External VDD Connector
Nu-Link2-Me
Ammeter
ICE Chip: M48SSIDAE
External VSS Connector
M471 Target Board
External VREF Connector
Infrared LED External VBAT Connector
ETM Connector
IR Receiver
VDD Switch
Figure 3-1 Front View of NuMaker-M471KI
Figure 3-1 shows the main components and connectors from the front side of NuMaker-M471KI. The
following lists components and connectors from the front view:
Target chip: M471KI8AE (U1)
USB PWR Connector (J2)
Arduino UNO Compatible Extension Connectors (NU1, NU2, NU3, NU4)
M471 Extension Connectors (JP3, JP4, JP5 and JP6)
External VDD Power Connector (JP1)
External VSS Power Connector (JP2)
External VREF Connector (VREF1)
VDD Switch (SW3)
ETM Connector (ETM1)
IR Receiver (IR1)
Infrared LED (D3)
Ammeter Connector (AMMETER)
Reset Button (SW1)
Input Button (SW2)
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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Rear View
Figure 3-2 shows the main components and connectors from the rear side of NuMaker-M471KI.
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-M471KI

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Extension Connectors
Table 3-1 presents the extension connectors.
Connector
Description
JP3, JP4, JP5 and JP6
Full pins extension connectors on the NuMaker-M471KI.
NU1, NU2, NU3 and
NU4
Arduino UNO compatible pins on the NuMaker-M471KI.
Table 3-1 Extension Connectors
3.3.1 Pin Assignment for Extension Connectors
The NuMaker-M471KI provides the M471KI8AE onboard and extension connectors (JP3, JP4, JP5 and
JP6). The Figure 3-3 shows the M471KI8AE extension connectors.
JP3
Pin1 ~ Pin32
JP6
Pin97 ~ Pin128
JP5 Pin33 ~ Pin64
JP4 Pin65 ~ Pin96
Figure 3-3 M471KI8AE Extension Connectors

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Header
M471KI8AE
Pin No.
Function
JP3
JP3.1
1
PB.5/EADC0_CH5/ACMP1_N/SPI1_MISO/I2C0_SCL/UART5_TXD/EPWM0_CH0/UART2_TXD/TM
0/INT0
JP3.2
2
PB.4/EADC0_CH4/ACMP1_P1/SPI1_MOSI/I2C0_SDA/UART5_RXD/EPWM0_CH1/UART2_RXD/T
M1/INT1
JP3.3
3
PB.3/EADC0_CH3/ACMP0_N/SPI1_CLK/UART1_TXD/UART5_nRTS/EPWM0_CH2/I2C1_SCL/EP
WM0_BRAKE0/TM2/INT2
JP3.4
4
PB.2/EADC0_CH2/ACMP0_P1/SPI1_SS/UART1_RXD/UART5_nCTS/EPWM0_CH3/I2C1_SDA/TM
3/INT3
JP3.5
5
PC.12/UART0_TXD/I2C0_SCL/EPWM1_CH0/ACMP0_O
JP3.6
6
PC.11/UART0_RXD/I2C0_SDA/EPWM1_CH1/ACMP1_O
JP3.7
7
PC.10/UART3_TXD/EPWM1_CH2
JP3.8
8
PC.9/UART3_RXD/EPWM1_CH3
JP3.9
9
PB.1/EADC0_CH1/SPI1_I2SMCLK/UART2_TXD/I2C1_SCL/EPWM0_CH4/EPWM1_CH4/EPWM0_
BRAKE0
JP3.10
10
PB.0/EADC0_CH0/UART2_RXD/SPI0_I2SMCLK/I2C1_SDA/EPWM0_CH5/EPWM1_CH5/EPWM0_
BRAKE1
JP3.11
11
PI.0/UART0_TXD/I2C0_SCL/UART5_TXD/UART2_TXD/I2C1_SCL/EPWM0_CH4/EPWM1_CH0/A
CMP0_O
JP3.12
12
PI.1/UART0_RXD/I2C0_SDA/UART5_RXD/UART2_RXD/I2C1_SDA/EPWM0_CH5/EPWM1_CH1/A
CMP1_O
JP3.13
13
PA.11/EADC0_CH23/ACMP0_P0/BPWM0_CH0/EPWM0_SYNC_OUT/TM0_EXT
JP3.14
14
PA.10/EADC0_CH22/ACMP1_P0/BPWM0_CH1/TM1_EXT/DAC0_ST
JP3.15
15
PA.9/EADC0_CH21/UART1_TXD/BPWM0_CH2/TM2_EXT
JP3.16
16
PA.8/EADC0_CH20/UART1_RXD/BPWM0_CH3/TM3_EXT/INT4
JP3.17
17
PC.13/EADC0_CH19/UART2_TXD/BPWM0_CH4/CLKO/EADC0_ST
JP3.18
18
PD.12/EADC0_CH18/UART2_RXD/BPWM0_CH5/CLKO/EADC0_ST/INT5
JP3.19
19
PD.11/EADC0_CH17/UART1_TXD/INT6
JP3.20
20
PD.10/EADC0_CH16/UART1_RXD/INT7
JP3.21
21
PG.2/I2C0_SMBAL/I2C1_SCL/TM0
JP3.22
22
PG.3/I2C0_SMBSUS/I2C1_SDA/TM1
JP3.23
23
PG.4/TM2
JP3.24
24
PF.11/UART5_TXD/TM3
JP3.25
25
PF.10/SPI0_I2SMCLK/UART5_RXD
JP3.26
26
PF.9/SPI0_SS/UART5_nRTS
JP3.27
27
PF.8/SPI0_CLK/UART5_nCTS
JP3.28
28
PF.7/SPI0_MISO/UART4_TXD
JP3.29
29
PF.6/SPI0_MOSI/UART4_RXD
JP3.30
30
PF.14/EPWM1_BRAKE0/EPWM0_BRAKE0/EPWM0_CH4/CLKO/TM3/INT5
JP3.31
31
PF.5/UART2_RXD/UART2_nCTS/EPWM0_CH0/BPWM0_CH4/EPWM0_SYNC_OUT/X32_IN/EAD
C0_ST
JP3.32
32
PF.4/UART2_TXD/UART2_nRTS/EPWM0_CH1/BPWM0_CH5/X32_OUT

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Header
M471KI8AE
Pin No.
Function
JP5
JP5.1
33
PH.4/SPI1_MISO
JP5.2
34
PH.5/SPI1_MOSI
JP5.3
35
PH.6/SPI1_CLK
JP5.4
36
PH.7/SPI1_SS
JP5.5
37
PF.3/UART0_TXD/I2C0_SCL/XT1_IN/BPWM1_CH0
JP5.6
38
PF.2/UART0_RXD/I2C0_SDA/XT1_OUT/BPWM1_CH1
JP5.7
39
VSS
JP5.8
40
VDD
JP5.9
41
PE.8/UART2_TXD/EPWM0_CH0/EPWM0_BRAKE0/TRACE_DATA3
JP5.10
42
PE.9/UART2_RXD/EPWM0_CH1/EPWM0_BRAKE1/TRACE_DATA2
JP5.11
43
PE.10/UART3_TXD/EPWM0_CH2/EPWM1_BRAKE0/TRACE_DATA1
JP5.12
44
PE.11/UART3_RXD/UART1_nCTS/EPWM0_CH3/EPWM1_BRAKE1/TRACE_DATA0
JP5.13
45
PE.12/UART1_nRTS/EPWM0_CH4/TRACE_CLK
JP5.14
46
PE.13/I2C0_SCL/UART4_nRTS/UART1_TXD/EPWM0_CH5/EPWM1_CH0/BPWM1_CH5
JP5.15
47
PC.8/I2C0_SDA/UART4_nCTS/UART1_RXD/EPWM1_CH1/BPWM1_CH4
JP5.16
48
PC.7/SPI1_MISO/UART4_TXD/UART0_nCTS/I2C1_SMBAL/EPWM1_CH2/BPWM1_CH0/TRACE_
DATA3/TM0/INT3
JP5.17
49
PC.6/SPI1_MOSI/UART4_RXD/UART0_nRTS/I2C1_SMBSUS/EPWM1_CH3/BPWM1_CH1/TRAC
E_DATA2/TM1/INT2
JP5.18
50
PA.7/SPI1_CLK/UART0_TXD/I2C1_SCL/EPWM1_CH4/BPWM1_CH2/ACMP0_WLAT/TM2/INT1
JP5.19
51
PA.6/SPI1_SS/UART0_RXD/I2C1_SDA/EPWM1_CH5/BPWM1_CH3/ACMP1_WLAT/TM3/INT0
JP5.20
52
PF.12/I2C0_SCL/UART5_TXD/UART3_TXD/UART1_TXD/I2C1_SCL/EPWM0_CH2/BPWM0_CH0/
TRACE_DATA1/CIR0_RXD
JP5.21
53
PF.13/I2C0_SDA/UART5_RXD/UART3_RXD/UART1_RXD/I2C1_SDA/EPWM0_CH3/BPWM0_CH1
/TRACE_DATA0
JP5.22
54
PD.15/EPWM0_CH5/TRACE_CLK/TM3/INT1
JP5.23
55
PA.5/SPI1_I2SMCLK/UART0_nCTS/UART5_TXD/I2C0_SCL/UART0_TXD/BPWM0_CH5/EPWM0_
CH0
JP5.24
56
PA.4/SPI0_I2SMCLK/UART0_nRTS/UART5_RXD/I2C0_SDA/UART0_RXD/BPWM0_CH4/EPWM0
_CH1
JP5.25
57
PA.3/SPI0_SS/UART4_TXD/UART1_TXD/I2C1_SCL/I2C0_SMBAL/CLKO/BPWM0_CH3/EPWM0_
CH2/EPWM1_BRAKE1
JP5.26
58
PA.2/SPI0_CLK/UART4_RXD/UART1_RXD/I2C1_SDA/I2C0_SMBSUS/BPWM0_CH2/EPWM0_CH
3/CIR0_RXD
JP5.27
59
PA.1/SPI0_MISO/UART0_TXD/UART1_nCTS/BPWM0_CH1/EPWM0_CH4
JP5.28
60
PA.0/SPI0_MOSI/UART0_RXD/UART1_nRTS/BPWM0_CH0/EPWM0_CH5/DAC0_ST
JP5.29
61
PF.15/EPWM0_BRAKE0/EPWM0_CH1/TM2/CLKO/INT4
JP5.30
62
PE.14/UART2_TXD
JP5.31
63
PE.15/UART2_RXD
JP5.32
64
nRESET
JP4
JP4.1
65
PF.0/ICE_DAT

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Header
M471KI8AE
Pin No.
Function
JP4.2
66
PF.1/ICE_CLK
JP4.3
67
PD.9/UART2_nCTS
JP4.4
68
PD.8/UART2_nRTS
JP4.5
69
PC.5/UART2_TXD/I2C1_SCL/UART4_TXD/EPWM1_CH0
JP4.6
70
PC.4/SPI1_I2SMCLK/UART2_RXD/I2C1_SDA/UART4_RXD/EPWM1_CH1
JP4.7
71
PC.3/SPI1_MISO/UART2_nRTS/I2C0_SMBAL/UART3_TXD/EPWM1_CH2
JP4.8
72
PC.2/SPI1_MOSI/UART2_nCTS/I2C0_SMBSUS/UART3_RXD/EPWM1_CH3
JP4.9
73
PC.1/SPI1_CLK/UART2_TXD/I2C0_SCL/EPWM1_CH4/ACMP0_O/EADC0_ST
JP4.10
74
PC.0/SPI1_SS/UART2_RXD/I2C0_SDA/EPWM1_CH5/ACMP1_O
JP4.11
75
PI.2/UART1_TXD/I2C0_SCL/UART5_TXD/I2C1_SCL/UART4_TXD/BPWM0_CH5/EADC0_ST
JP4.12
76
PI.3/UART1_RXD/I2C0_SDA/UART5_RXD/I2C1_SDA/UART4_RXD/BPWM0_CH4
JP4.13
77
PG.9/BPWM0_CH5
JP4.14
78
PG.10/BPWM0_CH4
JP4.15
79
PG.11/BPWM0_CH3
JP4.16
80
PG.12/BPWM0_CH2
JP4.17
81
PG.13/BPWM0_CH1
JP4.18
82
PG.14/BPWM0_CH0
JP4.19
83
PG.15/CLKO/EADC0_ST
JP4.20
84
PD.7/UART1_TXD/I2C0_SCL/SPI1_MISO
JP4.21
85
PD.6/UART1_RXD/I2C0_SDA/SPI1_MOSI
JP4.22
86
PD.5/I2C1_SCL/SPI1_CLK
JP4.23
87
PD.4/I2C1_SDA/SPI1_SS
JP4.24
88
PD.3/SPI0_SS/UART3_nRTS/UART0_TXD
JP4.25
89
PD.2/SPI0_CLK/UART3_nCTS/UART0_RXD
JP4.26
90
PD.1/SPI0_MISO/UART3_TXD
JP4.27
91
PD.0/SPI0_MOSI/UART3_RXD/TM2
JP4.28
92
PD.13/SPI0_I2SMCLK/SPI1_I2SMCLK
JP4.29
93
PA.12/UART4_TXD/I2C1_SCL/BPWM1_CH2
JP4.30
94
PA.13/UART4_RXD/I2C1_SDA/BPWM1_CH3
JP4.31
95
PA.14/UART0_TXD/BPWM1_CH4
JP4.32
96
PA.15/UART0_RXD/BPWM1_CH5/EPWM0_SYNC_IN
JP6
JP6.1
97
PE.7/UART5_TXD/EPWM0_CH0/BPWM0_CH5
JP6.2
98
PE.6/UART5_RXD/EPWM0_CH1/BPWM0_CH4
JP6.3
99
PE.5/EPWM0_CH2/BPWM0_CH3
JP6.4
100
PE.4/EPWM0_CH3/BPWM0_CH2

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Header
M471KI8AE
Pin No.
Function
JP6.5
101
PE.3/EPWM0_CH4/BPWM0_CH1
JP6.6
102
PE.2/EPWM0_CH5/BPWM0_CH0
JP6.7
103
PI.4/UART4_TXD/UART0_TXD/UART1_TXD/EPWM0_CH5/CIR0_RXD/ACMP0_O
JP6.8
104
PI.5/UART4_RXD/UART0_RXD/UART1_RXD/EPWM0_CH4/ACMP1_O
JP6.9
105
PE.1/SPI1_MISO/UART3_TXD/I2C1_SCL/UART4_nCTS
JP6.10
106
PE.0/SPI1_MOSI/UART3_RXD/I2C1_SDA/UART4_nRTS
JP6.11
107
PH.8/SPI1_CLK/UART3_nRTS/I2C1_SMBAL/UART1_TXD
JP6.12
108
PH.9/SPI1_SS/UART3_nCTS/I2C1_SMBSUS/UART1_RXD
JP6.13
109
PH.10/SPI1_I2SMCLK/UART4_TXD/UART0_TXD
JP6.14
110
PH.11/UART4_RXD/UART0_RXD/EPWM0_CH5
JP6.15
111
PD.14/SPI0_I2SMCLK/EPWM0_CH4
JP6.16
112
VSS
JP6.17
113
LDO_CAP
JP6.18
114
VDD
JP6.19
115
PC.14/SPI0_I2SMCLK/CIR0_RXD/EPWM0_SYNC_IN/TM1
JP6.20
116
PB.15/EADC0_CH15/SPI0_SS/UART0_nCTS/UART3_TXD/EPWM0_BRAKE1/EPWM1_CH0/TM0_
EXT
JP6.21
117
PB.14/EADC0_CH14/SPI0_CLK/UART0_nRTS/UART3_RXD/EPWM1_CH1/TM1_EXT/CLKO
JP6.22
118
PB.13/EADC0_CH13/ACMP0_P3/ACMP1_P3/SPI0_MISO/UART0_TXD/UART3_nRTS/EPWM1_C
H2/TM2_EXT
JP6.23
119
PB.12/EADC0_CH12/DAC0_OUT/ACMP0_P2/ACMP1_P2/SPI0_MOSI/UART0_RXD/UART3_nCT
S/EPWM1_CH3/TM3_EXT
JP6.24
120
AVDD
JP6.25
121
VREF
JP6.26
122
AVSS
JP6.27
123
PB.11/EADC0_CH11/UART0_nCTS/UART4_TXD/I2C1_SCL/SPI0_I2SMCLK/BPWM1_CH0
JP6.28
124
PB.10/EADC0_CH10/UART0_nRTS/UART4_RXD/I2C1_SDA/BPWM1_CH1
JP6.29
125
PB.9/EADC0_CH9/UART0_TXD/UART1_nCTS/I2C1_SMBAL/I2C0_SCL/BPWM1_CH2/INT7
JP6.30
126
PB.8/EADC0_CH8/UART0_RXD/UART1_nRTS/I2C1_SMBSUS/I2C0_SDA/BPWM1_CH3/INT6
JP6.31
127
PB.7/EADC0_CH7/UART1_TXD/BPWM1_CH4/EPWM1_BRAKE0/EPWM1_CH4/INT5/ACMP0_O
JP6.32
128
PB.6/EADC0_CH6/UART1_RXD/BPWM1_CH5/EPWM1_BRAKE1/EPWM1_CH5/INT4/ACMP1_O
Table 3-2 M471KI8AE Full-pin Extension Connectors and GPIO Function List

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3.3.2 Arduino UNO Compatible Extension Connectors
Figure 3-4 shows the Arduino UNO compatible extension connectors.
VIN
VSS
VSS
5V
3V
RST
IOREF VDD
NC
A5 PB.1 EADC0_CH1 I2C1_SCL
A4 PB.0 EADC0_CH0 I2C1_SDA
A3 PB.4 EADC0_CH4
A2 PB.5 EADC0_CH5
A1 PB.6 EADC0_CH6
A0 PB.7 EADC0_CH7
MISO CLK RESET SS
PE.1 PH.8 nRESET PH.9
3V MOSI GND -
VDD PE.0 VSS PH.10
UART1_RXD EPWM0_CH3 PB.2 D0
UART1_TXD EPWM0_CH2 PB.3 D1
UART2_RXD EPWM1_CH1 PC.4 D2
UART2_TXD EPWM1_CH0 PC.5 D3
UART3_TXD EPWM1_CH2 PC.3 D4
UART3_RXD EPWM1_CH3 PC.2 D5
EPWM1_CH4 PA.7 D6
EPWM1_CH5 PA.6 D7
UART5_TXD EPWM0_CH0 PA.5 D8
UART5_RXD EPWM0_CH1 PA.4 D9
SPI0_SS EPWM0_CH2 PA.3 D10
SPI0_MOSI EPWM0_CH5 PA.0 D11
SPI0_MISO EPWM0_CH4 PA.1 D12
SPI0_CLK EPWM0_CH3 PA.2 D13
VSS VSS
VREF VREF
I2C0_SDA PC.0 SDA
I2C0_SCL PC.1 SCL
Figure 3-4 Arduino UNO Compatible Extension Connectors

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Maker Nu-mbed NUC472 User Manual
Header
NuMaker-M471KI
Header
NuMaker-M471KI
Compatible to
Arduino UNO
GPIO Pin of M471
Compatible to
Arduino UNO
GPIO Pin of M471
N
U
3
NU3.1
D0
PB.2
N
U
2
NU2.6
A5
PB.1
NU3.2
D1
PB.3
NU2.5
A4
PB.0
NU3.3
D2
PC.4
NU2.4
A3
PB.4
NU3.4
D3
PC.5
NU2.3
A2
PB.5
NU3.5
D4
PC.3
NU2.2
A1
PB.6
NU3.6
D5
PC.2
NU2.1
A0
PB.7
NU3.7
D6
PA.7
N
U
1
NU1.8
VIN
-
NU3.8
D7
PA.6
NU1.7
VSS
N
U
4
NU4.1
D8
PA.5
NU1.6
VSS
NU4.2
D9
PA.4
NU1.5
5V
NU4.3
D10
PA.3
NU1.4
3V
NU4.4
D11
PA.0
NU1.3
RST
nRESET
NU4.5
D12
PA.1
NU1.2
IOREF
VREF
NU4.6
D13
PA.2
NU1.1
NC
-
NU4.7
VSS
VSS
NU4.8
VREF
VREF
NU4.9
SDA
PC.0
NU4.10
SCL
PC.1
Table 3-3 Arduino UNO Extension Connectors and M471KI8AE Mapping GPIO List

NuMaker-M471KI
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NUMAKER-M711KI USER MANUAL
Maker Nu-mbed NUC472 User Manual
Power Supply Configuration
The NuMaker-M471KI is able to adopt multiple power supply. External power sources include NU1 Vin
(7 V to 12 V), VDD (depends on target chip operating voltage), and PC through USB connector. By using
switches and voltage regulator, multiple power domains can be created on the NuMaker-M471KI.
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
M471 platform and Nu-Link2-Me.
J2
USB_VBUS
USB connector on NuMaker-M471KI supplies 5 V
power from PC to M471 platform 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: SW3.1(NU1 5VCC) should be switched to ON.
Table 3-5 5 V Power Sources

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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 M471 platformor ICE chip.
UP1
USB_VBUS
UP1 converts USB_VBUS to 3.3 V and supplies 3.3 V
to M471 platform.
Note: SW3.2 (NU1 3VCC) should be switched to ON.
UP1
NU1_5VCC
UP1 converts NU1_5VCC to 3.3 V and supplies 3.3 V
to M471 platform.
Note: SW3.2 (NU1 3VCC) should be switched to ON.
Table 3-6 3.3 V Power Sources
3.4.4 Power Connectors
Table 3-7 presents the power connectors.
Connector
Description
JP1
VDD connector on the NuMaker-M471KI.
Note: M471 operating voltage range is from 2.5 V to 5.5 V.
JP2
VSS connector on the NuMaker-M471KI.
Table 3-7 Power Connectors

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Maker Nu-mbed NUC472 User Manual
3.4.5 USB Connectors
Table 3-8 presents the USB connectors.
Connector
Description
ICEJ3
ICE USB connector on Nu-Link2-Me for power supply, debugging and
programming from PC.
J2
USB connector on NuMaker-M471KI for power supply.
Table 3-8 USB Connectors
3.4.6 Power Switches
Table 3-9 presents the power switches.
Switch
Description
ICEJPR1
Configures the target chip operating voltage at 1.8 V / 3.3 V / 5 V.
Note: M471 operating voltage range is from 1.8 V to 3.6 V. Do not switch
ICEJPR1 (MCUVCC) to 5 V.
ICEJPR2
Configures the ICE chip operating voltage at 1.8 V / 3.3 V.
SW3
Configures the target chip operating voltage at 3.3 V / 5 V.
Note: M471 operating voltage range is from 2.5 V to 5.5 V.
Table 3-9 Power Switches
3.4.7 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.
Nu-Link2-Me
ICE USB Connector (ICEJ3)
Figure 3-5 External Power Supply Sources on Nu-Link2-Me
To use ICEJ3 as external power supply source with Nu-Link2-Me, please follow the below steps: