Nuvoton NuMicro series User manual

NuMaker-NUC240V
Dec. 22, 2022 Page 1of 41 Rev 1.00
NUMAKER-NUC240V USER MANUAL
Maker Nu-mbed NUC472 User Manual
NuMicro® Family
Arm®Cortex®-M0-based Microcontroller
NuMaker-NUC240V
User Manual
Evaluation Board for NuMicro®NUC240V 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......................................................................................................6
2FEATURES......................................................................................................7
3HARDWARE CONFIGURATION.....................................................................8
3.1 Front View....................................................................................................................... 8
3.2 Rear View ....................................................................................................................... 9
3.3 Extension Connectors................................................................................................. 10
3.3.1 Pin Assignment for Extension Connectors .................................................................10
3.3.2 Arduino UNO Compatible Extension Connectors......................................................14
3.4 Power Supply Configuration ...................................................................................... 16
3.4.1 VIN Power Source..........................................................................................................16
3.4.2 5 V Power Sources ........................................................................................................16
3.4.3 3.3 V Power Sources .....................................................................................................17
3.4.4 1.8 V Power Sources .....................................................................................................17
3.4.5 Power Connectors..........................................................................................................17
3.4.6 USB Connectors .............................................................................................................18
3.4.7 Power Switches ..............................................................................................................18
3.4.8 Power Supply Models ....................................................................................................18
3.5 External Reference Voltage Connector.................................................................... 22
3.6 Ammeter Connector.................................................................................................... 22
3.7 Push Buttons................................................................................................................ 23
3.8 LEDs.............................................................................................................................. 23
3.9 Nu-Link2-Me................................................................................................................. 23
3.9.1 VCOM Switches..............................................................................................................23
3.9.2 Status LEDs ....................................................................................................................24
3.10 CAN Bus Interface................................................................................................. 24
4QUICK START...............................................................................................26
4.1 Toolchains Supporting ................................................................................................ 26
4.2Nuvoton Nu-Link Driver Installation.......................................................................... 26
4.3 BSP Firmware Download ........................................................................................... 28
4.4 Hardware Setup........................................................................................................... 28
4.5 Find the Example Project ........................................................................................... 30
4.6 Execute the Project under Toolchains...................................................................... 30
4.6.1 Keil MDK..........................................................................................................................30
4.6.2 IAR EWARM....................................................................................................................34
5NUMAKER-NUC240V SCHEMATICS ...........................................................36

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5.1 Nu-Link2-Me................................................................................................................. 36
5.2 NuMaker-NUC240V Schematics .............................................................................. 37
5.3 Extension Connectors................................................................................................. 38
5.4 PCB Placement ........................................................................................................... 39
6REVISION HISTORY .....................................................................................40

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List of Figures
Figure 1-1 NuMaker-NUC240V Evaluation Board........................................................................... 6
Figure 3-1 Front View of NuMaker-NUC240V ................................................................................. 8
Figure 3-2 Rear View of NuMaker-NUC240V.................................................................................. 9
Figure 3-3 NUC240V Extension Connectors ................................................................................. 10
Figure 3-4 Arduino UNO Compatible Extension Connectors......................................................... 14
Figure 3-5 External Power Supply Sources on Nu-Link2-Me ........................................................ 18
Figure 3-6 External Power Supply Sources on NUC240V Target Board....................................... 19
Figure 3-7 Detach the Nu-Link2-Me from NuMaker-NUC240V ..................................................... 20
Figure 3-8 Wiring between Ammeter Connector and Ammeter..................................................... 22
Figure 3-9 Project Path of SYS_PowerDown_MinCurrent ............................................................ 22
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 5-1 Nu-Link2-Me Circuit...................................................................................................... 36
Figure 5-2 NUC240V Target Board Circuit .................................................................................... 37
Figure 5-3 Extension Connectors Circuit ....................................................................................... 38
Figure 5-4 Front Placement ........................................................................................................... 39
Figure 5-5 Rear Placement............................................................................................................ 39

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List of Tables
Table 3-1 Extension Connectors.................................................................................................... 10
Table 3-2 NUC240V Full-pin Extension Connectors and GPIO Function List............................... 13
Table 3-3 Arduino UNO Extension Connectors and NUC240V Mapping GPIO List ..................... 15
Table 3-4 Vin Power Source.......................................................................................................... 16
Table 3-5 5 V Power Sources........................................................................................................ 16
Table 3-6 3.3 V Power Sources..................................................................................................... 17
Table 3-7 1.8 V Power Sources..................................................................................................... 17
Table 3-8 Power Connectors ......................................................................................................... 17
Table 3-9 USB Connectors ............................................................................................................ 18
Table 3-10 Power Switches ........................................................................................................... 18
Table 3-11 Supply External Power through Nu-Link2-Me ............................................................. 19
Table 3-12 Supply External Power for NUC240V Target Board.................................................... 21
Table 3-13 External Reference Voltage Connector....................................................................... 22
Table 3-14 Ammeter Connector..................................................................................................... 22
Table 3-15 Push Buttons................................................................................................................ 23
Table 3-16 LEDs ............................................................................................................................ 23
Table 3-17 VCOM Function of Nu-Link2-Me.................................................................................. 23
Table 3-18 Operation Status LED Patterns ................................................................................... 24
Table 3-19 CAN Bus Interface....................................................................................................... 24
Table 3-20 U10 Pin Connection..................................................................................................... 25
Table 3-21 U12 Pin Connection..................................................................................................... 25

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1 OVERVIEW
The NuMaker-NUC240V is an evaluation board for Nuvoton NuMicro NUC230/NUC240 series
microcontrollers. The NuMaker-NUC240V consists of two parts: an NUC240V target board and an on-
board Nu-Link2-Me debugger and programmer. The NuMaker-NUC240V is designed for project
evaluation, prototype development and validation with power consumption monitoring function. The
NuMaker-NUC240V is suitable for automotive and industrial control applications developing which need
reliable and robust CAN communication.
The NUC240V target board is based on NuMicro NUC240VE3AE. For the development flexibility, the
NUC240V 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.
Additionally, the NUC240V target board implements a CAN bus interface with an AEC-Q100 qualified
high-speed CAN transceiver to realize new CAN design.
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-NUC240V Evaluation Board

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2 FEATURES
NuMicro NUC240VE3AE used as main microcontroller with function compatible with:
–NUC230LC2AE
–NUC230LD2AE
–NUC230LE3AE
–NUC230SC2AE
–NUC230SD2AE
–NUC230SE3AE
–NUC230VE3AE
–NUC240LC2AE
–NUC240LD2AE
–NUC240LE3AE
–NUC240SC2AE
–NUC240SD2AE
–NUC240SE3AE
–NUC240VE3AE
NUC240V full pins 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 FS connector on NUC240V 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
Figure 3-1 Front View of NuMaker-NUC240V
Figure 3-1 shows the main components and connectors from the front side of NuMaker-NUC240V. The
following lists components and connectors from the front view:
Target chip: NUC240VE3AE (U1)
USB PWR Connector (J2)
Arduino UNO Compatible Extension Connectors (NU1, NU2, NU3, NU4)
NUC240V 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)
CAN Terminal Block(CAN0, CAN1)
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-NUC240V.
The following lists components and connectors from the rear view:
Nu-Link2-Me
–MCUVCC Power Switch (ICEJPR1)
–ICEVCC Power Switch (ICEJPR2)
Figure 3-2 Rear View of NuMaker-NUC240V

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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-NUC240V.
NU1, NU2, NU3 and
NU4
Arduino UNO compatible pins on the NuMaker-NUC240V.
Table 3-1 Extension Connectors
3.3.1 Pin Assignment for Extension Connectors
The NuMaker-NUC240V provides the NUC240V onboard and extension connectors (JP3, JP4, JP5 and
JP6). Figure 3-3 shows the NUC240V extension connectors.
Figure 3-3 NUC240V Extension Connectors

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Header
NUC240VE3AE
Pin No.
Function
JP3
JP3.1
1
PE.15
JP3.2
2
PE.14
JP3.3
3
PE.13
JP3.4
4
PB.14 / AD0 / INT0 / SPI3_SS1
JP3.5
5
PB.13 / AD1 / ACMP1_O
JP3.6
6
VBAT
JP3.7
7
X32_OUT
JP3.8
8
X32_IN
JP3.9
9
PA.11 / I2C1_SCL / CAN1_RXD / nRD
JP3.10
10
PA.10 / I2C1_SDA / CAN1_TXD / nWR
JP3.11
11
PA.9 / I2C0_SCL
JP3.12
12
PA.8 / I2C0_SDA
JP3.13
13
PD.8 / SPI3_SS0
JP3.14
14
PD.9 / SPI3_CLK
JP3.15
15
PD.10 / SPI3_MISO0
JP3.16
16
PD.11 / SPI3_MOSI0
JP3.17
17
PD.12 / SPI3_MISO1
JP3.18
18
PD.13 / SPI3_MOSI1
JP3.19
19
PB.4 / UART1_RXD
JP3.20
20
PB.5 / UART1_TXD
JP3.21
21
PB.6 / ALE / UART1_nRTS
JP3.22
22
PB.7 / nCS / UART1_nCTS
JP3.23
23
LDO_CAP
JP3.24
24
VDD
JP3.25
25
VSS
JP3.26
GND
GND
JP5
JP5.1
26
PE.8
JP5.2
27
PE.7
JP5.3
28
USB_VBUS
JP5.4
29
USB_VDD33_CAP
JP5.5
30
USB_D-
JP5.6
31
USB_D+
JP5.7
32
PB.0 / UART0_RXD
JP5.8
33
PB.1 / UART0_TXD
JP5.9
34
PB.2 / nWRL / UART0_nRTS / TM2_EXT / TM2 / ACMP0_O

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Header
NUC240VE3AE
Pin No.
Function
JP5.10
35
PB.3 / UART0_nCTS / nWRH / TM3_EXT / TM3 / SC2_CD
JP5.11
36
PD.6 / CAN0_RXD
JP5.12
37
PD.7 / CAN0_TXD
JP5.13
38
PD.14 / UART2_RXD / CAN1_RXD
JP5.14
39
PD.15 / UART2_TXD / CAN1_TXD
JP5.15
40
PC.5 / SPI0_MOSI1
JP5.16
41
PC.4 / SPI0_MISO1
JP5.17
42
PC.3 / SPI0_MOSI0 / I2S_DO
JP5.18
43
PC.2 / SPI0_MISO0 / I2S_DI
JP5.19
44
PC.1 / SPI0_CLK / I2S_BCLK
JP5.20
45
PC.0 / SPI0_SS0 / I2S_LRCLK
JP5.21
46
PE.6
JP5.22
47
PE.5 / PWM5 / TM1_EXT / TM1
JP5.23
48
PB.11 / TM3 / PWM4
JP5.24
49
PB.10 / TM2 / SPI0_SS1
JP5.25
50
PB.9 / TM1 / SPI1_SS1
JP5.26
GND
GND
JP4
JP4.1
51
PE.4
JP4.2
52
PE.3
JP4.3
53
PE.2
JP4.4
54
PE.1 / PWM7
JP4.5
55
PE.0 / PWM6
JP4.6
56
PC.13 / SPI1_MOSI1
JP4.7
57
PC.12 / SPI1_MISO1
JP4.8
58
PC.11 / SPI1_MOSI0
JP4.9
59
PC.10 / SPI1_MISO0
JP4.10
60
PC.9 / SPI1_CLK
JP4.11
61
PC.8 / MCLK / SPI1_SS0
JP4.12
62
PA.15 / PWM3 / I2S_MCLK / SC2_PWR
JP4.13
63
PA.14 / PWM2 / AD15 / SC2_RST
JP4.14
64
PA.13 / PWM1 / AD14 / SC2_CLK / UART5_TXD
JP4.15
65
PA.12 / PWM0 / AD13 / SC2_DAT / UART5_RXD
JP4.16
66
ICE_DAT
JP4.17
67
ICE_CLK
JP4.18
68
VDD

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Header
NUC240VE3AE
Pin No.
Function
JP4.19
69
VSS
JP4.20
70
AVSS
JP4.21
71
PA.0 / ADC0 / SC0_PWR
JP4.22
72
PA.1 / ADC1 / SC0_RST / AD12
JP4.23
73
PA.2 / ADC2 / SC0_CLK / UART3_TXD / AD11
JP4.24
74
PA.3 / ADC3 / SC0_DAT / UART3_RXD / AD10
JP4.25
75
PA.4 / ADC4 / AD9 / SC1_PWR
JP4.26
GND
GND
JP6
JP6.1
76
PA.5 / ADC5 / AD8 / SC1_RST
JP6.2
77
PA.6 / ADC6 / AD7 / SC1_CLK / UART4_TXD
JP6.3
78
PA.7 / ADC7 / AD6 / SC1_DAT / UART4_RXD / SPI2_SS1
JP6.4
79
VREF
JP6.5
80
AVDD
JP6.6
81
PD.0 / SPI2_SS0
JP6.7
82
PD.1 / SPI2_CLK
JP6.8
83
PD.2 / SPI2_MISO0
JP6.9
84
PD.3 / SPI2_MOSI0
JP6.10
85
PD.4 / SPI2_MISO1
JP6.11
86
PD.5 / SPI2_MOSI1
JP6.12
87
PC.7 / ACMP0_N / AD5 / SC1_CD
JP6.13
88
PC.6 / ACMP0_P / SC0_CD / AD4
JP6.14
89
PC.15 / AD3 / ACMP1_N
JP6.15
90
PC.14 / AD2 / ACMP1_P
JP6.16
91
PB.15 / INT1 / TM0_EXT / TM0 / AD6
JP6.17
92
PF.0 / XT1_OUT
JP6.18
93
PF.1 / XT1_IN
JP6.19
94
nRESET
JP6.20
95
VSS
JP6.21
96
VDD
JP6.22
97
PF.2 / PS2_DAT
JP6.23
98
PF.3 / PS2_CLK
JP6.24
99
PVSS
JP6.25
100
PB.8 / STADC / TM0 / CLKO
JP6.26
GND
GND
Table 3-2 NUC240V 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.
Figure 3-4 Arduino UNO Compatible Extension Connectors

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Header
NuMaker-NUC240V
Header
NuMaker-NUC240V
Compatible to
Arduino UNO
GPIO Pin of
NUC240V
Compatible to
Arduino UNO
GPIO Pin of
NUC240V
NU3
NU3.1
RX
PB4
NU2
NU2.6
SCL
PA11
NU3.2
TX
PB5
NU2.5
SDA
PA10
NU3.3
D2
PA12
NU2.4
A3
PA3
NU3.4
D3
PA13
NU2.3
A2
PA2
NU3.5
D4
PA14
NU2.2
A1
PA1
NU3.6
D5
PA15
NU2.1
A0
PA0
NU3.7
D6
PB11
NU1
NU1.8
VIN
-
NU3.8
D7
PE5
NU1.7
VSS
NU4
NU4.1
D8
PE0
NU1.6
VSS
NU4.2
D9
PE1
NU1.5
5V
NU4.3
SS/D10
PC0
NU1.4
3V
NU4.4
MOSI
PC3
NU1.3
RST
nRESET
NU4.5
MISO
PC2
NU1.2
IOREF
VREF
NU4.6
SCK
PC1
NU1.1
NC
-
NU4.7
VSS
VSS
NU4.8
VREF
VREF
NU4.9
SDA
PA8
NU4.10
SCL
PA9
Table 3-3 Arduino UNO Extension Connectors and NUC240V Mapping GPIO List

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3.4 Power Supply Configuration
The NuMaker-NUC240V 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-
NUC240V.
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
NUC240V target board and Nu-Link2-Me.
J2
USB_VBUS
USB connector on NuMaker-NUC240V supplies 5 V
power from PC to NUC240V 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.
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 NUC240V target board or ICE chip.
UP1
USB_VBUS
UP1 converts USB_VBUS to 3.3 V and supplies 3.3 V
to NUC240V 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 NUC240V 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 NUC240V 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-NUC240V.
JP2
VSS connector on the NuMaker-NUC240V.
Table 3-8 Power Connectors

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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-NUC240V 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.
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.
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.
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:
Solder the resistor on ICEJPR1 (MCUVCC) depending on the target chip operating voltage.
Solder the resistor on ICEJPR2 (ICEVCC) depending on the ICE chip operating voltage.

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NUMAKER-NUC240V USER MANUAL
Maker Nu-mbed NUC472 User Manual
Switch the SW2 to OFF.
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
External Power Supply through NUC240V Target Board to Target Chip
The external power supply sources on NUC240V target board are shown in Figure 3-6.
Figure 3-6 External Power Supply Sources on NUC240V Target Board
To use Vin or J2 as external power supply source, please follow the steps below:
Switch the SW2 depending on the target chip operating voltage.
Remove the resistor on ICEJPR1 (MCUVCC).
Solder the resistor on ICEJPR2 (ICEVCC) depending on the ICE chip operating voltage.
Connect the external power supply to Vin or J2.
To use JP1 as external power supply source, please follow the steps below:
Switch the SW2 to OFF.

NuMaker-NUC240V
Dec. 22, 2022 Page 20 of 41 Rev 1.00
NUMAKER-NUC240V USER MANUAL
Maker Nu-mbed NUC472 User Manual
Remove the resistor on ICEJPR1 (MCUVCC).
Solder the resistor on ICEJPR2 (ICEVCC) depending on the ICE chip operating voltage.
Connect ICEJ3 to PC.
Connect the external power supply to JP1.
To use Vin or J2 as external power supply source with Nu-Link2-Me detached from NuMaker-
NUC240V, please follow the steps below:
Switch the SW2 depending on the target chip operating voltage.
Detach the Nu-Link2-Me from NuMaker-NUC240V.
Connect the external power supply to Vin or J2.
To use JP1 as external power supply source with Nu-Link2-Me detached from NuMaker-NUC240V,
please follow the steps below:
Switch the SW2 to OFF.
Detach the Nu-Link2-Me from NuMaker-NUC240V.
Connect the external power supply to JP1.
Figure 3-7 Detach the Nu-Link2-Me from NuMaker-NUC240V