Nuvoton NuMaker Series User manual

NuMaker-MG51FC
Jul. 10, 2023 Page 1of 41 Rev 1.00
NUMAKER-MG51FC USER MANUAL
Maker Nu-mbed NUC472 User Manual
NuMicro® Family
1T 8051-based Microcontroller
NuMaker-MG51FC
User Manual
Evaluation Board for NuMicro®1T 8051 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......................................................12
3.4 Power Supply Configuration ...................................................................................... 14
3.4.1 VIN Power Source..........................................................................................................14
3.4.2 5 V Power Sources ........................................................................................................14
3.4.3 3.3 V Power Sources .....................................................................................................15
3.4.4 1.8 V Power Sources .....................................................................................................15
3.4.5 Power Connectors..........................................................................................................15
3.4.6 USB Connectors .............................................................................................................16
3.4.7 Power Switches ..............................................................................................................16
3.4.8 Power Supply Models ....................................................................................................16
3.5 External Reference Voltage Connector.................................................................... 20
3.6 Ammeter Connector.................................................................................................... 21
3.7 Push Buttons................................................................................................................ 22
3.8 LEDs.............................................................................................................................. 23
3.9 Nu-Link2-Me................................................................................................................. 24
3.9.1 VCOM Switches..............................................................................................................24
3.9.2 Status LEDs ....................................................................................................................24
4QUICK START ............................................................................................... 25
4.1 Toolchains Supporting ................................................................................................ 25
4.2 Nuvoton Nu-Link Driver Installation.......................................................................... 25
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-MG51FC SCHEMATICS............................................................. 36
5.1 Nu-Link2-Me................................................................................................................. 36

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5.2 NuMaker-MG51FC 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-MG51FC Evaluation Board............................................................................. 6
Figure 3-1 Front View of NuMaker-MG51FC ................................................................................... 8
Figure 3-2 Rear View of NuMaker-MG51FC.................................................................................... 9
Figure 3-3 MG51FC Extension Connectors ................................................................................... 10
Figure 3-4 Arduino UNO Compatible Extension Connectors......................................................... 12
Figure 3-5 External Power Supply Sources on Nu-Link2-Me ........................................................ 16
Figure 3-6 External Power Supply Sources on MG51FC Target Board ........................................ 17
Figure 3-7 Detach the Nu-Link2-Me from NuMaker-MG51FC....................................................... 18
Figure 3-8 Wiring between Ammeter Connector and Ammeter..................................................... 21
Figure 3-9 Project Path of PowerDown_BODdisable .................................................................... 21
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 MG51FC 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 MG51FC Full-pin Extension Connectors and GPIO Function List ................................ 11
Table 3-3 Arduino UNO Extension Connectors and MG51FC9AE Mapping GPIO List ................ 13
Table 3-4 Vin Power Source .......................................................................................................... 14
Table 3-5 5 V Power Sources ........................................................................................................ 14
Table 3-6 3.3 V Power Sources ..................................................................................................... 15
Table 3-7 1.8 V Power Sources ..................................................................................................... 15
Table 3-8 Power Connectors ......................................................................................................... 15
Table 3-9 USB Connectors ............................................................................................................ 16
Table 3-10 Power Switches ........................................................................................................... 16
Table 3-11 Supply External Power through Nu-Link2-Me ............................................................. 17
Table 3-12 Supply External Power for MG51FC Target Board ..................................................... 19
Table 3-13 External Reference Voltage Connector ....................................................................... 20
Table 3-14 Ammeter Connector..................................................................................................... 21
Table 3-15 Push Buttons................................................................................................................ 22
Table 3-16 LEDs ............................................................................................................................ 23
Table 3-17 VCOM Function of Nu-Link2-Me.................................................................................. 24
Table 3-18 Operation Status LED Patterns ................................................................................... 24

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1 OVERVIEW
The NuMaker-MG51FC is an evaluation board for Nuvoton NuMicro MG51FC9AE microcontrollers. The
NuMaker-MG51FC consists of two parts: an MG51FC target board and an on-board Nu-Link2-Me
debugger and programmer. The NuMaker-MG51FC is designed for project evaluation, prototype
development and validation with power consumption monitoring function. The NuMaker-MG51FC board
is suitable for a wide range of applications such as home appliances, LED lighting controls, motor
controls or Industrial automation.
The MG51FC9AE target board is based on NuMicro MG51FC9AE. For the development flexibility, the
MG51FC 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-MG51FC Evaluation Board

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2 FEATURES
NuMicro MG51FC9AE used as main microcontroller
MG51FC9AE 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 Power connector on MG51FC target board
–ICE USB connector on Nu-Link2-Me
On-board Nu-Link2-Me debugger and programmer:
–Debug through OCD 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 Power Connector
P0.5 LED
VDD Switch
MG51FC9AE MG51FC9AE Extension Connectors
Arduino UNO Compatible Extension Connectors
External VDD Connector
Nu-Link2-Me
Ammeter
ICE Chip: M48SSIDAE
External VSS Connector
MG51FC Target Board
Power LED
Figure 3-1 Front View of NuMaker-MG51FC
Figure 3-1 shows the main components and connectors from the front side of NuMaker-MG51FC. The
following lists components and connectors from the front view:
NuMicro MG51FC9AE used as main microcontroller
MG51FC9AE 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 Power only connector on MG51FC9AE 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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3.2 Rear View
Figure 3-2 shows the main components and connectors from the rear side of NuMaker-MG51FC.
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-MG51FC

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3.3 Extension Connectors
Table 3-1 presents the extension connectors.
Connector
Description
JP3 and JP4
Full pins extension connectors on the NuMaker-MG51FC.
NU1, NU2, NU3 and
NU4
Arduino UNO compatible pins on the NuMaker-MG51FC.
Table 3-1 Extension Connectors
3.3.1 Pin Assignment for Extension Connectors
The NuMaker-MG51FC provides the MG51FC9AE onboard and extension connectors (JP3 and JP4).
Figure 3-3 shows the MG51FC extension connectors.
Pin1 ~ Pin10 JP3
Pin11 ~ Pin20JP4
Figure 3-3 MG51FC Extension Connectors

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Header
MG51FC9AE
Pin No.
Function
JP3
JP3.1
1
P0.5/PWM0_CH2/IC6/T0/ADC_CH4
JP3.2
2
P0.6/UART0_TXD/ADC_CH3/
JP3.3
3
P0.7/UART0_RXD/ADC_CH2/
JP3.4
4
P2.0/nRESET
JP3.5
5
P3.0ADC_CH1/OSCIN/PWM0_CH3/SPI0_MOSI/IC3/T1
JP3.6
6
P1.7/ADC_CH0/
JP3.7
7
VSS
JP3.8
8
P1.6/ICE_DAT/UART1_TXD/[I2C0_SDA]
JP3.9
9
VDD
JP3.10
10
P1.5/PWM0_CH5/IC7/SPI0_SS
JP4
JP5.1
11
P1.4/PWM0_CH1/I2C0_SDA/PWM0_BRAKE
JP5.2
12
P1.3/I2C0_SCL/[STADC]
JP5.3
13
P1.2/PWM0_CH0/IC0/
JP5.4
14
P1.1/PWM0_CH1/IC1/ADC_CH7/CLKO
JP5.5
15
P1.0/PWM0_CH2/IC2/SPI0_CLK
JP5.6
16
P0.0/PWM0_CH3/SPI0_MOSI/IC3/T1
JP5.7
17
P0.1/PWM0_CH4/IC4/SPI0_MISO
JP5.8
18
P0.2/ICE_CLK/UART1_RXD/[I2C0_SCL]
JP5.9
19
P0.3/ADC_CH6/PWM0_CH5/IC5
JP5.10
20
P0.4/PWM0_CH3/IC3/ADC_CH5/STADC
Table 3-2 MG51FC 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.
UART0_RXD P0.7 D0
UART0_TXD P0.6 D1
PWM0_CH5 P0.3 D2
PWM0_CH4 P0.4 D3
PWM0_CH3 P1.2 D4
NC D5
NC D6
NC D7
NC D8
NC D9
SPI0_SS P1.5 D10
SPI0_MOSI P0.0 D11
SPI0_MISO P0.1 D12
SPI0_CLK P1.0 D13
VSS VSS
VDD VREF
I2C0_SDA P1.4 SDA
I2C0_SCL P1.3 SCL
VIN
VSS
VSS
5V
3V
RST
VDD
NC
A5 NC
A4 NC
A3 NC
A2 P1.1 ADC_CH7
A1 P1.7 ADC_CH0
A0 P3.0 ADC_CH1
Figure 3-4 Arduino UNO Compatible Extension Connectors

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Header
NuMaker-MG51FC
Header
NuMaker-MG51FC
Compatible to
Arduino UNO
GPIO Pin of
MG51FC
Compatible to
Arduino UNO
GPIO Pin of
NUC240V
NU3
NU3.1
RX
P0.7
NU2
NU2.6
SCL
NC
NU3.2
TX
P0.6
NU2.5
SDA
NC
NU3.3
D2
P0.3
NU2.4
A3
NC
NU3.4
D3
P0.4
NU2.3
A2
P1.1
NU3.5
D4
P1.2
NU2.2
A1
P1.7
NU3.6
D5
NC
NU2.1
A0
P3.0
NU3.7
D6
NC
NU1
NU1.8
VIN
-
NU3.8
D7
NC
NU1.7
VSS
NU4
NU4.1
D8
NC
NU1.6
VSS
NU4.2
D9
NC
NU1.5
5V
NU4.3
SS/D10
P1.5
NU1.4
3V
NU4.4
MOSI
P0.0
NU1.3
RST
nRESET
NU4.5
MISO
P0.1
NU1.2
IOREF
VDD
NU4.6
SCK
P1.0
NU1.1
NC
-
NU4.7
VSS
VSS
NU4.8
VREF
AVDD
NU4.9
SDA
P1.4
NU4.10
SCL
P1.3
Table 3-3 Arduino UNO Extension Connectors and MG51FC9AE Mapping GPIO List

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3.4 Power Supply Configuration
The NuMaker-MG51FC 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-
MG51FC.
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
MG51FC target board and Nu-Link2-Me.
J2
USB_VBUS
USB connector on NuMaker-MG51FC supplies 5 V
power from PC to MG51FC 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 MG51FC target board or ICE chip.
UP1
USB_VBUS
UP1 converts USB_VBUS to 3.3 V and supplies 3.3 V
to MG51FC 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 MG51FC 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 MG51FC 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-MG51FC.
JP2
VSS connector on the NuMaker-MG51FC.
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-MG51FC 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
3.4.8.1 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.

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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
3.4.8.2 External Power Supply through MG51FC Target Board to Target Chip
The external power supply sources on MG51FC target board are shown in Figure 3-6.
USB Power Connector (J2)
NU1 pin8 (Vin)
External VDD Connector (JP1)
External VSS Connector (JP2)
Figure 3-6 External Power Supply Sources on MG51FC Target Board
To use Vin or J2 as external power supply source, please follow the steps below:
1. Switch the SW2 depending on the target chip operating voltage.
2. Remove the resistor on ICEJPR1 (MCUVCC).
3. Solder the resistor on ICEJPR2 (ICEVCC) depending on the ICE chip operating voltage.
4. Connect the external power supply to Vin or J2.
To use JP1 as external power supply source, please follow the steps below:
1. Switch the SW2 to OFF.
2. Remove the resistor on ICEJPR1 (MCUVCC).
3. Solder the resistor on ICEJPR2 (ICEVCC) depending on the ICE chip operating voltage.
4. Connect ICEJ3 to PC.
5. Connect the external power supply to JP1.

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To use Vin or J2 as external power supply source with Nu-Link2-Me detached from NuMaker-
MG51FC, please follow the steps below:
1. Switch the SW2 depending on the target chip operating voltage.
2. Detach the Nu-Link2-Me from NuMaker-MG51FC.
3. Connect the external power supply to Vin or J2.
To use JP1 as external power supply source with Nu-Link2-Me detached from NuMaker-
MG51FC, please follow the steps below:
1. Switch the SW2 to OFF.
2. Detach the Nu-Link2-Me from NuMaker-MG51FC.
3. Connect the external power supply to JP1.
USB Power Connector (J2)
NU1 pin8 (Vin)
External VDD Connector (JP1)
External VSS Connector (JP2) Separate Nu-Link2-Me
"
"
Figure 3-7 Detach the Nu-Link2-Me from NuMaker-MG51FC

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Table 3-12 presents all power models when supplies external power through MG51FC target board.
The MG51FC target board external power sources are highlighted in yellow.
Model
Target Chip
Voltage
Vin [1]
J2[1]
ICEJ3
SW2
Selection
JP1[2]
ICEJPR1
(MCUVCC)
Selection [3]
ICEJPR2
(ICEVCC)
Selection [4]
ICE Chip
Voltage [5]
4
3.3 V
7 V ~ 12 V
Input
-
-
NU1
3VCC
3.3 V output
Remove
resistor
3.3 V
3.3 V
5
3.3 V
-
Connect
to PC
-
NU1
3VCC
3.3 V output
Remove
resistor
3.3 V
3.3 V
6
5 V
7 V ~ 12 V
Input
-
-
NU1
5VCC
5 V output
Remove
resistor
3.3 V
3.3 V
7
5 V
-
Connect
to PC
-
NU1
5VCC
5 V output
Remove
resistor
3.3 V
3.3 V
8
2.5 V ~ 5.5 V
-
-
Connect to
PC
OFF
DC Input
2.5 V ~ 5.5 V
Remove
resistor
1.8 V / 3.3 V
1.8 V / 3.3 V
9
2.5 V ~ 5.5 V
-
-
Nu-Link2-Me
removed
OFF
DC Input
2.5 V ~ 5.5 V
-
-
-
Note:
1. The Vin input voltage will be converted by voltage regulator UP2 to 5 V. Supplying external power to Vin or J2 can
provide 5 V to NU1 pin5 (5V) and 3.3 V to NU1 pin4 (3VCC).
2. JP1 external power input only provides voltage to target chip.
3. 0 Ω should be removed from ICEJPR1’s MCUVCC and 1.8 V / 3.3 V / 5 V.
4. 0 Ω should be soldered between ICEJPR2’s ICEVCC and 1.8 V / 3.3 V.
5. The ICE chip voltage should be close to the target chip voltage.
6. -: Unused
Table 3-12 Supply External Power for MG51FC Target Board

NuMaker-MG51FC
Jul. 10, 2023 Page 20 of 41 Rev 1.00
NUMAKER-MG51FC USER MANUAL
Maker Nu-mbed NUC472 User Manual
3.5 External Reference Voltage Connector
Table 3-13 External Reference Voltage Connector presents the external reference voltage connector.
Connector
Description
VREF1
Connector for user to connect to the external reference voltage pin of the
target chip. User needs to remove the L5 ferrite bead.
Table 3-13 External Reference Voltage Connector