Nuvoton NuMaker M032BTAI User manual

NuMaker-M032BTAI
Apr. 19, 2022 Page 1of 46 Rev 1.00
NUMAKER-M032BTAI USER MANUAL
Maker Nu-mbed NUC472 User Manual
NuMicro® Family
Arm®Cortex®-M0-based Microcontroller
NuMaker-M032BTAI
User Manual
Evaluation Board for NuMicro®M032BT 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......................................................15
3.4 Power Supply Configuration ...................................................................................... 17
3.4.1 VIN Power Source..........................................................................................................17
3.4.2 5 V Power Sources.........................................................................................................17
3.4.3 3.3 V Power Sources .....................................................................................................18
3.4.4 1.8 V Power Sources .....................................................................................................18
3.4.5 Power Connectors..........................................................................................................18
3.4.6 USB Connectors .............................................................................................................19
3.4.7 Power Switches ..............................................................................................................19
3.4.8 Power Supply Models ....................................................................................................20
3.5 Ammeter Connector.................................................................................................... 24
3.6 Push Buttons................................................................................................................ 24
3.7 LEDs.............................................................................................................................. 25
3.8 HXT Clock Source Selection ..................................................................................... 25
3.9 Nu-Link2-Me................................................................................................................. 26
3.9.1 VCOM Switches..............................................................................................................26
3.9.2 Status LEDs ....................................................................................................................27
4QUICK START...............................................................................................28
4.1 Toolchain Supporting .................................................................................................. 28
4.2 Nuvoton Nu-Link Driver Installation.......................................................................... 28
4.3 BSP Firmware Download ........................................................................................... 30
4.4 Hardware Setup........................................................................................................... 30
4.5 Find the Example Project ........................................................................................... 32
4.6 Execute the Project under Toolchains...................................................................... 32
4.6.1 Keil MDK ..........................................................................................................................32
5NUMAKER-M032BTAI SCHEMATICS..........................................................41
5.1 Nu-Link2-Me................................................................................................................. 41
5.2 M032BTAI Target Board ............................................................................................. 42

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5.3 Extension Connectors................................................................................................. 43
5.4 PCB Placement............................................................................................................ 44
6REVISION HISTORY .....................................................................................45

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List of Figures
Figure 1-1 NuMaker-M032BTAI Evaluation Board .......................................................................... 7
Figure 3-1 Front View of NuMaker-M032BTAI................................................................................. 9
Figure 3-2 Rear View of NuMaker-M032BTAI ............................................................................... 10
Figure 3-3 M032BTAIAAN Extension Connectors......................................................................... 11
Figure 3-4 Arduino UNO Compatible Extension Connectors......................................................... 15
Figure 3-5 External Power Supply Sources on Nu-Link2-Me ........................................................ 20
Figure 3-6 External Power Supply Sources on M032BTAI Target Board...................................... 21
Figure 3-7 Detach the Nu-Link2-Me from NuMaker-M032BTAI .................................................... 22
Figure 3-8 Wiring between Ammeter Connector and Ammeter..................................................... 24
Figure 4-1 Nu-Link USB Driver Installation Setup.......................................................................... 28
Figure 4-2 Nu-Link USB Driver Installation.................................................................................... 29
Figure 4-3 Open VCOM Function .................................................................................................. 30
Figure 4-4 ICE USB Connector...................................................................................................... 30
Figure 4-5 Device Manger.............................................................................................................. 31
Figure 4-6 PuTTY Session Setting................................................................................................. 31
Figure 4-7 TRSP_UART_Peripheral Project Folder Path.............................................................. 32
Figure 4-8 Warning Message of “Device not found” ...................................................................... 32
Figure 4-9 Project File Migrate to Version 5 Format...................................................................... 33
Figure 4-10 Debugger Setting in Options Window......................................................................... 33
Figure 4-11 Programming Setting in Options Window................................................................... 34
Figure 4-12 Compile and Download the Project............................................................................ 34
Figure 4-13 KeilMDK Debug Mode ............................................................................................... 35
Figure 4-14 Debug Message on Serial Port Terminal Windows.................................................... 36
Figure 4-15 Search for NuvotonBLE on Google Play Store or App Store..................................... 36
Figure 4-16 NuvotonBLE Icon........................................................................................................ 37
Figure 4-17 Turn on Bluetooth on Mobile Phone........................................................................... 37
Figure 4-18 Connect to Nuvoton_TRSP_UART on Android Phone .............................................. 37
Figure 4-19 Connect to Nuvoton_TRSP_UART on iPhone........................................................... 38
Figure 4-20 Transfer String from Android Phone to M032BT........................................................ 38
Figure 4-21 Transfer String from iPhone to M032BT..................................................................... 39
Figure 4-22 Transfer String from M032BT to Andriod Phone........................................................ 39
Figure 4-23 Transfer String from M032BT to iPhone..................................................................... 40
Figure 5-1 Nu-Link2-Me Circuit...................................................................................................... 41
Figure 5-2 M032BTAI Target Board Circuit ................................................................................... 42
Figure 5-3 Extension Connectors Circuit ....................................................................................... 43
Figure 5-4 Front Placement ........................................................................................................... 44

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Figure 5-5 Rear Placement............................................................................................................ 44

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List of Tables
Table 3-1 Extension Connectors.................................................................................................... 11
Table 3-2 M032BTAIAAN Full-pin Extension Connectors and GPIO Function List....................... 14
Table 3-3 Arduino UNO Extension Connectors and M032BTAIAAN Mapping GPIO List............. 16
Table 3-4 Vin Power Source.......................................................................................................... 17
Table 3-5 5V Power Sources ......................................................................................................... 17
Table 3-6 3.3 V Power Sources..................................................................................................... 18
Table 3-7 1.8 V Power Sources..................................................................................................... 18
Table 3-8 Power Connectors ......................................................................................................... 18
Table 3-9 USB Connectors ............................................................................................................ 19
Table 3-10 Power Switches ........................................................................................................... 19
Table 3-11 Supply External Power through Nu-Link2-Me.............................................................. 20
Table 3-12 Supply External Power for M032BTAI Target Board................................................... 23
Table 3-13 Ammeter Connector..................................................................................................... 24
Table 3-14 Push Buttons................................................................................................................ 24
Table 3-15 LEDs ............................................................................................................................ 25
Table 3-16 Cock Sources of HXT .................................................................................................. 25
Table 3-17 VCOM Function of Nu-Link2-Me.................................................................................. 26
Table 3-18 Operation Status LED Patterns ................................................................................... 27

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1 OVERVIEW
The NuMaker-M032BTAI is an evaluation board for Nuvoton NuMicro M032BT series microcontrollers.
The M032BT series BLE MCU is compliant with the BLE 5.0 standard supporting data rates up to 2
Mbps, offering 2.4 GHz proprietary stacks to achieve more possibility for wireless connectivity and Over-
the-Air (OTA) for firmware upgrade. The NuMaker-M032BTAI consists of two parts: an M032BTAI target
board and an on-board Nu-Link2-Me debugger and programmer. The NuMaker-M032BTAI is designed
for project evaluation, prototype development and validation with power consumption monitoring
function.
The M032BTAI target board is based on NuMicro M032BTAIAAN. For the development flexibility, the
M032BTAI target board provides the extension connectors, 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-M032BTAI Evaluation Board

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2 FEATURES
NuMicro M032BTAIAAN used as main microcontroller with function compatible with:
–M032BTAIAAN
–M032BTAG8AN
M032BTAIAAN full pins extension connectors
Arduino UNO compatible extension connectors
Ammeter connector for measuring the microcontroller’s power consumption
PCB antenna
Microwave coaxial connector with switch for characteristics measurement
Flexible board power supply:
–External VDD power connector
–Arduino UNO compatible extension connector Vin
–USB FS connector on M032BTAI target board
–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 FS Connector
Power LED
PF15 LED
M032BTAIAAN
M032BTAIAAN Extension Connectors
Arduino UNO Compatible Extension Connectors
External VDD Connector
Nu-Link2-Me
Ammeter
ICE Chip: M48SSIDAE
External VSS ConnectorM032BTAI Target Board
VDD Switch
Microwave Coaxial Connector
PCB Antenna
Figure 3-1 Front View of NuMaker-M032BTAI
Figure 3-1 shows the main components and connectors from the front side of NuMaker-M032BTAI. The
following lists components and connectors from the front view:
Target chip: M032BTAIAAN (U1)
USB Full Speed Connector (J2)
Arduino UNO Compatible Extension Connectors (NU1, NU2, NU3, NU4, NU5)
M032BT Extension Connectors (JP3, JP4)
External VDD Power Connector (JP1)
External VSS Power Connector (JP2)
VDD Switch (SW2)
Ammeter Connector (AMMETER)
Reset Button (SW1)
Power LED and PF15 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-M032BTAI.
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-M032BTAI

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3.3 Extension Connectors
Table 3-1 presents the extension connectors.
Connector
Description
JP3, JP4
Full pins extension connectors on the NuMaker-M032BTAI.
NU1, NU2, NU3, NU4 and
NU5
Arduino UNO compatible pins on the NuMaker-M032BTAI.
Table 3-1 Extension Connectors
3.3.1 Pin Assignment for Extension Connectors
The NuMaker-M032BTAI provides the M032BTAIAAN onboard and extension connectors (JP3, JP4).
Figure 3-3 shows the M032BTAIAAN extension connectors.
JP3
Pin1 ~ Pin34
JP4 Pin35 ~ Pin68
Figure 3-3 M032BTAIAAN Extension Connectors

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Header
M032BTAIAAN
Pin No.
Function
JP3
JP3.1
1
RF_BUCK_OUT
JP3.2
2
VSS
JP3.3
3
VSS
JP3.4
4
LDO_CAP
JP3.5
5
VDD
JP3.6
6
PB.15 / ADC0_CH15 / USCI0_CTL1 / UART0_nCTS / UART3_TXD / PWM1_CH0 / TM0_EXT /
PWM0_BRAKE1
JP3.7
7
PB.14 / ADC0_CH14 / USCI0_DAT1 / UART0_nRTS/ UART3_RXD / PWM1_CH1 / TM1_EXT / CLKO
JP3.8
8
PB.13 / ADC0_CH13 / ACMP0_P3 / ACMP1_P3 / USCI0_DAT0 / UART0_TXD / UART3_nRTS /
PWM1_CH2 / TM2_EXT
JP3.9
9
PB.12 / ADC0_CH12 / ACMP0_P2 / ACMP1_P2 / USCI0_CLK / UART0_RXD / UART3_nCTS /
PWM1_CH3 / TM3_EXT
JP3.10
10
AVDD
JP3.11
11
AVSS
JP3.12
12
PB.11 / ADC0_CH11 / UART0_nCTS / UART4_TXD / I2C1_SCL / BPWM1_CH0
JP3.13
13
PB.10 / ADC0_CH10 / USCI1_CTL0 / UART0_nRTS / UART4_RXD / I2C1_SDA / BPWM1_CH1
JP3.14
14
PB.9 / ADC0_CH9 / USCI1_CTL1 / UART0_TXD / UART1_nCTS / BPWM1_CH2
JP3.15
15
PB.8 / ADC0_CH8 / USCI1_CLK / UART0_RXD / UART1_nRTS / BPWM1_CH3
JP3.16
16
PB.7 / ADC0_CH7 / USCI1_DAT0 / UART1_TXD / BPWM1_CH4 / PWM1_BRAKE0 / PWM1_CH4 /
ACMP0_O
JP3.17
17
PB.6 / ADC0_CH6 / USCI1_DAT1 / UART1_RXD / BPWM1_CH5 / PWM1_BRAKE1 / PWM1_CH5 /
INT4 / ACMP1_O
JP3.18
18
PB.5 / ADC0_CH5 / ACMP1_N / I2C0_SCL / UART5_TXD / USCI1_CTL0 / PWM0_CH0 /
UART2_TXD / TM0 / INT0
JP3.19
19
PB.4 / ADC0_CH4 / ACMP1_P1 / I2C0_SDA / UART5_RXD / USCI1_CTL1 / PWM0_CH1 /
UART2_RXD / TM1 / INT1
JP3.20
20
PB.3 / ADC0_CH3 / ACMP0_N / I2C1_SCL / UART1_TXD / UART5_nRTS / USCI1_DAT1 /
PWM0_CH2 / PWM0_BRAKE0 / TM2 / INT2
JP3.21
21
PB.2 / ADC0_CH2 / ACMP0_P1 / I2C1_SDA / UART1_RXD / UART5_nCTS / USCI1_DAT0 /
PWM0_CH3 / TM3 / INT3
JP3.22
22
PB.1 / ADC0_CH1 / UART2_TXD / USCI1_CLK / I2C1_SCL / QSPI0_MISO1 / PWM0_CH4 /
PWM1_CH4 / PWM0_BRAKE0
JP3.23
23
PB.0 / ADC0_CH0 / UART2_RXD / I2C1_SDA / QSPI0_MOSI1 / PWM0_CH5 / PWM1_CH5 /
PWM0_BRAKE1
JP3.24
24
PA.11 / ACMP0_P0 / USCI0_CLK / BPWM0_CH0 / TM0_EXT
JP3.25
25
PA.10 / ACMP1_P0 / USCI0_DAT0 / BPWM0_CH1 / TM1_EXT
JP3.26
26
PA.9 / USCI0_DAT1 / UART1_TXD / BPWM0_CH2 / TM2_EXT

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Header
M032BTAIAAN
Pin No.
Function
JP3.27
27
RF_VDD
JP3.28
28
RF_CLKO
JP3.29
29
PA.8 / USCI0_CTL1 / UART1_RXD / BPWM0_CH3 / TM3_EXT / INT4
JP3.30
30
PC.13 / USCI0_CTL0 / UART2_TXD / BPWM0_CH4 / CLKO / ADC0_ST
JP3.31
31
PF.14 / PWM1_BRAKE0 / PWM0_BRAKE0 / PWM0_CH4 / CLKO / TM3
JP3.32
32
PF.5 / UART2_RXD / UART2_nCTS / PWM0_CH0 / BPWM0_CH4 / X32_IN / ADC0_ST
JP3.33
33
PF.4 / UART2_TXD / UART2_nRTS / PWM0_CH1 / BPWM0_CH5 / X32_OUT
JP3.34
34
PF.3 / UART0_TXD / I2C0_SCL / XT1_IN / BPWM1_CH0
JP4
JP4.1
35
PF.2 / UART0_RXD / I2C0_SDA / QSPI0_CLK / XT1_OUT / BPWM1_CH1
JP4.2
36
PE.8 / USCI1_CTL1 / UART2_TXD / PWM0_CH0 / PWM0_BRAKE0
JP4.3
37
PE.9 / USCI1_CTL0 / UART2_RXD / PWM0_CH1 / PWM0_BRAKE1
JP4.4
38
PC.7 / UART4_TXD / UART0_nCTS / PWM1_CH2 / BPWM1_CH0 / TM0 / INT3
JP4.5
39
PC.6 / UART4_RXD / UART0_nRTS / PWM1_CH3 / BPWM1_CH1 / TM1 / INT2
JP4.6
40
PA.7 / UART0_TXD / I2C1_SCL / PWM1_CH4 / BPWM1_CH2 / ACMP0_WLAT / TM2 / INT1
JP4.7
41
PA.6 / UART0_RXD / I2C1_SDA / PWM1_CH5 / BPWM1_CH3 / ACMP1_WLAT / TM3 / INT0
JP4.8
42
VSS
JP4.9
43
VDD
JP4.10
44
PA.5 / QSPI0_MISO1 / UART0_nCTS / UART0_TXD / I2C0_SCL / UART5_TXD / BPWM0_CH5 /
PWM0_CH0
JP4.11
45
PA.4 / QSPI0_MOSI1 / UART0_nRTS / UART0_RXD / I2C0_SDA / UART5_RXD / BPWM0_CH4 /
PWM0_CH1
JP4.12
46
PA.3 / QSPI0_SS / UART4_TXD / I2C0_SMBAL / UART1_TXD / I2C1_SCL / BPWM0_CH3 /
PWM0_CH2 / CLKO / PWM1_BRAKE1
JP4.13
47
PA.2 / QSPI0_CLK / UART4_RXD / I2C0_SMBSUS / UART1_RXD / I2C1_SDA / BPWM0_CH2 /
PWM0_CH3
JP4.14
48
PA.1 / QSPI0_MISO0 / UART0_TXD / UART1_nCTS / BPWM0_CH1 / PWM0_CH4
JP4.15
49
PA.0 / QSPI0_MOSI0 / UART0_RXD / UART1_nRTS / BPWM0_CH0 / PWM0_CH5
JP4.16
50
PF.15 / PWM0_BRAKE0 / PWM0_CH1 / TM2 / CLKO / INT4
JP4.17
51
nRESET
JP4.18
52
PF.0 / UART1_TXD / I2C1_SCL / UART0_TXD / BPWM1_CH0 / ICE_DAT
JP4.19
53
PF.1 / UART1_RXD / I2C1_SDA / UART0_RXD / BPWM1_CH1 / ICE_CLK
JP4.20
54
PC.1 / QSPI0_MISO0 / UART2_TXD / I2C0_SCL / PWM1_CH4 / ACMP0_O / ADC0_ST
JP4.21
55
PC.0 / QSPI0_MOSI0 / UART2_RXD / I2C0_SDA / PWM1_CH5 / ACMP1_O
JP4.22
56
RF_AVDD1V2
JP4.23
57
VSS

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Header
M032BTAIAAN
Pin No.
Function
JP4.24
58
RF_I/O
JP4.25
59
VSS
JP4.26
60
RF_VDDPA
JP4.27
61
RF_XTAL_IN
JP4.28
62
RF_XTAL_OUT
JP4.29
63
USB_VBUS
JP4.30
64
USB_D-
JP4.31
65
USB_D+
JP4.32
66
USB_VDD33_CAP
JP4.33
67
RF_AVDD1V2
JP4.34
68
RF_BUCK_FB
-
-
69
EPAD(VSS)
Table 3-2 M032BTAIAAN 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.
UART1_RXD PB.2 D0
UART1_TXD PB.3 D1
PWM0_CH0 PA.5 D2
PWM0_CH1 PA.4 D3
PWM0_CH2 PA.3 D4
PWM0_CH3 PA.2 D5
PWM1_CH2 PC.7 D6
PWM1_CH3 PC.6 D7
PWM1_CH4 PA.7 D8
PWM1_CH5 PA.6 D9
PB.15(CS) PWM1_CH0 PB.15 D10
USCI0_DAT0(MOSI) PWM1_CH2 PB.13 D11
USCI0_DAT1(MISO) PWM1_CH1 PB.14 D12
USCI0_CLK(CLK) PWM1_CH3 PB.12 D13
VSS VSS
AVDD VREF
I2C0_SDA PC.0 SDA
I2C0_SCL PC.1 SCL
VIN
VSS
VSS
5V
3V
RST
IOREF VDD
NC
A5 PB.1 ADC0_CH1 I2C1_SCL UART2_TXD
A4 PB.0 ADC0_CH0 I2C1_SDA UART2_RXD
A3 PB.11 ADC0_CH11
A2 PB.10 ADC0_CH10
A1 PB.9 ADC0_CH9
A0 PB.4 ADC0_CH4
MISO CLK RESET SS
PB.6 PB.8 nRESET PB.5
USCI1_DAT1 USCI1_CLK USCI1_CTL0
5V MOSI GND -
VDD PB.7 VSS PE.8
USCI1_DAT0
Figure 3-4 Arduino UNO Compatible Extension Connectors

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Header
NuMaker-M032BTAI
Header
NuMaker-M032BTAI
Compatible to
Arduino UNO
GPIO Pin of M032BT
Compatible to
Arduino UNO
GPIO Pin of M032BT
NU5
NU5.1
MISO
PB.6
NU5
NU5.2
5V
VDD
NU5.3
CLK
PB.8
NU5.4
MOSI
PB.7
NU5.5
RESET
nRESET
NU5.6
GND
VSS
NU5.7
-
PB.5
NU5.8
-
PE.8
NU3
NU3.1
D0
PB.2
NU2
NU2.6
A5
PB.1
NU3.2
D1
PB.3
NU2.5
A4
PB.0
NU3.3
D2
PA.5
NU2.4
A3
PB.11
NU3.4
D3
PA.4
NU2.3
A2
PB.10
NU3.5
D4
PA.3
NU2.2
A1
PB.9
NU3.6
D5
PA.2
NU2.1
A0
PB.4
NU3.7
D6
PC.7
NU1
NU1.8
VIN
-
NU3.8
D7
PC.6
NU1.7
VSS
NU4
NU4.1
D8
PA.7
NU1.6
VSS
NU4.2
D9
PA.6
NU1.5
5V
NU4.3
D10
PB.15
NU1.4
3V
NU4.4
D11
PB.13
NU1.3
RST
nRESET
NU4.5
D12
PB.14
NU1.2
IOREF
VDD
NU4.6
D13
PB.12
NU1.1
NC
-
NU4.7
VSS
VSS
NU4.8
VREF
AVDD
NU4.9
SDA
PC.0
NU4.10
SCL
PC.1
Table 3-3 Arduino UNO Extension Connectors and M032BTAIAAN Mapping GPIO List

NuMaker-M032BTAI
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NUMAKER-M032BTAI USER MANUAL
Maker Nu-mbed NUC472 User Manual
3.4 Power Supply Configuration
The NuMaker-M032BTAI 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-
M032BTAI.
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
M032BTAI target board and Nu-Link2-Me.
J2
USB_VBUS
USB connector on NuMaker-M032BTAI supplies 5 V
power from PC to M032BTAI 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: M032BT operating voltage range is from 1.8 V to
3.6 V. Do not switch SW2.1 (NU1 5VCC) to ON.
Table 3-5 5V Power Sources

NuMaker-M032BTAI
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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 M032BTAI target board or ICE chip.
UP1
USB_VBUS
UP1 converts USB_VBUS to 3.3 V and supplies 3.3 V to
M032BTAI 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
M032BTAI 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 M032BTAI target board or ICE chip.
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-M032BTAI.
Note: M032BT operating voltage range is from 1.8 V to 3.6 V.
JP2
VSS connector on the NuMaker-M032BTAI.
Table 3-8 Power Connectors

NuMaker-M032BTAI
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NUMAKER-M032BTAI USER MANUAL
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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-M032BTAI 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: M032BT 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.
SW2
Configures the target chip operating voltage at 3.3 V / 5 V.
Note: M032BT operating voltage range is from 1.8 V to 3.6 V. Do not switch
SW2.1 (NU1 5VCC) to ON.
Table 3-10 Power Switches

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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
To use ICEJ3 as external power supply source with Nu-Link2-Me, please follow the steps below:
1. Solder the resistor on ICEJPR1 (MCUVCC) depending on the target chip operating voltage.
2. Solder the resistor on ICEJPR2 (ICEVCC) depending on the ICE chip operating voltage.
3. Switch the SW2 to OFF.
4. Connect the external power supply to ICEJ3.
Table 3-11 presents all power models when supplying external power through Nu-Link2-Me. The Nu-
Link2-Me external power sources are highlighted in yellow.
Model
Target Chip
Voltage
ICEJ3
ICEJPR1
(MCUVCC)
Selection [1]
ICEJPR2
(ICEVCC)
Selection [2]
ICE Chip
Voltage
SW2
Selection
J2
Vin
JP1
1
1.8 V
Connect to
PC
1.8 V
1.8 V
1.8 V
Off
-
-
1.8 V
output
2
3.3 V
Connect to
PC
3.3 V (default)
3.3 V (default)
3.3 V
Off
-
-
3.3 V
output
3
5 V
Connect to
PC
5 V
3.3 V (default)
3.3 V
Off
-
-
5 V
output
Note:
1. 0 Ω should be soldered between ICEJPR1’s MCUVCC and 1.8 V / 3.3 V / 5 V.
2. 0 Ω should be soldered between ICEJPR2’s ICEVCC and 1.8 V / 3.3 V.
3. -: Unused.
Table 3-11 Supply External Power through Nu-Link2-Me