Nuvoton NuMaker NUC980 User manual

NuMaker NUC980 Serial Server
July. 22, 2020 Page 1of 46 Rev 1.20
NUMAKER NUC980 SERIAL SERVER USER MANUAL
Maker Nu-mbed NUC472 User Manual
NuMaker NUC980 Serial Server
User Manual
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.............................................................................................5
2Features .............................................................................................6
3Hardware Configuration...........................................................................7
Front View............................................................................................... 7
Rear View..............................................................................................15
4Quick Start ........................................................................................ 16
BSP Download ........................................................................................16
Driver Installation .....................................................................................16
Hardware Setting .....................................................................................18
Programing Kernel and U-Boot to SPI NAND Flash ............................................21
Booting Linux Kernel .................................................................................24
Executing Sample Code.............................................................................26
5Block Diagram Schematic ...................................................................... 30
GPIO List Schematic.................................................................................30
Power Schematic .....................................................................................31
NUC980DK Schematic...............................................................................32
Power Filter Schematic ..............................................................................33
Configure Schematic.................................................................................34
NUC123ZD4AN0 Schematic........................................................................35
Memory Schematic...................................................................................36
RMII_PE Schematic..................................................................................37
RMII_PF Schematic..................................................................................38
UART_A Schematic ..................................................................................39
UART_B Schematic ..................................................................................40
USB Schematic .......................................................................................41
Expand Schematic....................................................................................42
PCB Placement .......................................................................................43
6REVISION HISTORY............................................................................ 45

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List of Figures
Figure 1-1 NuMaker NUC980 Serial Server Development Board ................................................... 5
Figure 3-1 Front View of NuMaker NUC980 Serial Server.............................................................. 7
Figure 3-2 Rear View of NuMaker NUC980 Serial Server............................................................. 15
Figure 4-1 Nuvoton USB Driver Installation Setup......................................................................... 16
Figure 4-2 Nuvoton USB Driver Installation................................................................................... 18
Figure 4-3 Hardware Setting.......................................................................................................... 19
Figure 4-4 Nuvoton VCOM............................................................................................................. 20
Figure 4-5 NuWriter Setting ........................................................................................................... 21
Figure 4-6 Program u-boot-spl....................................................................................................... 22
Figure 4-7 Program u-boot............................................................................................................. 23
Figure 4-8 Program Kernel Image ................................................................................................. 24
Figure 4-9 NuMaker NUC980 Serial Server Board Setup ............................................................. 26
Figure 4-10 Serial COM Port Setting ............................................................................................. 27
Figure 4-11 Serial COM Port.......................................................................................................... 28
Figure 4-12 TCP/IP Connection Window....................................................................................... 28
Figure 4-13 UART Setting Web Page............................................................................................ 29
Figure 5-1 GPIO List Schematic .................................................................................................... 30
Figure 5-2 Power Schematic.......................................................................................................... 31
Figure 5-3 NUC980DK Schematic................................................................................................. 32
Figure 5-4 Power Filter Schematic................................................................................................. 33
Figure 5-5 Configure Schematic .................................................................................................... 34
Figure 5-6 NUC123ZD4AN0 Schematic ........................................................................................ 35
Figure 5-7 Memory Schematic....................................................................................................... 36
Figure 5-8 RMII_PE Schematic...................................................................................................... 37
Figure 5-9 RMII_PF Schematic...................................................................................................... 38
Figure 5-10 UART_A Schematic.................................................................................................... 39
Figure 5-11 UART_B Schematic.................................................................................................... 40
Figure 5-12 USB Schematic........................................................................................................... 41
Figure 5-13 Expand Schematic...................................................................................................... 42
Figure 5-14 Front PCB Placement................................................................................................. 43
Figure 5-15 Back PCB Placement ................................................................................................. 44

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List of Tables
Table 4-1 Power On Setting........................................................................................................... 21

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1 OVERVIEW
NuMaker NUC980 Serial Server can gather information from up to 8 UART sensors and transfer to
cloud server over two on board Ethernet port. It can also transfer information from cloud server by
Ethernet to UART devices in opposite direction by applications. This serial server is a very popular
IIoT device used in industrial control, which can easily transfer an onsite industrial machine control
into a remote cloud factory control.
NuMaker NUC980 Serial Server Development Board has two sets of RS232/RS485 transceiver ports
on board and six sets of UART function pins. Company with NUC980 high performance DMA
channels, the data transfer is in a very high efficiency way between 8 UARTs and 2 Ethernet. This is
why NUC980 can easily satisfy most of the high performance serial transfer requirements.
This document provides a quick start guide for the NuMaker NUC980 Serial Server Development
Board. Users can understand both software and hardware configurations for the NuMaker NUC980
Serial Server. The platform provides Linux OS and plenty of industrial control protocol for users to
implement the Ethernet control applications in a very short time.
Figure 1-1 NuMaker NUC980 Serial Server Development Board

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2 FEATURES
NUC980DK61Y: LQFP128 pin MCP package with DDR2 (64 MB), which can run up to
300MHz operating speed
SPI Flash: Quad mode system booting or data storage
SD0/eMMC0: User SD/eMMC memory card for system booting, data storage or SDIO (Wi-
Fi) device
Provides 9 sets of COM ports
UART0: Connected to Virtual COM port for system development, debug message
output
UART4/UART5: 2 sets of DB9 port with RS232 transceiver
UART1~3/UART6~8: 6 sets of pin headers
JTAG interface provided for software development
2 sets of RJ45 port with Ethernet 10/100Mbps MAC
3 sets of LED for status indication
6 sets of user-configurable push button keys
USB port-0 that can be used as Device/HOST and USB port-1 that can be used as HOST
Supports pen drives, keyboards, mouse and printers
Provides over-voltage and over current protection
3.3V I/O power, 1.8V Memory power and 1.2V core power

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3 HARDWARE CONFIGURATION
Front View
Figure 3-1 Front View of NuMaker NUC980 Serial Server
Figure 3-1 shows the main components from the front view of NuMaker NUC980 Serial Server
Development Board
+5V In (CON1): Power adaptor 5V input
Power Model
CON5 USB Port
(Micro-B)
CON21 USB Port
(Micro-B)
CON1
Model 1
Connect to PC
-
-
Model 2
-
Connect to PC
-
Model 3
-
-
VDD5V Input

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Power indication LEDs (LED4, LED5):
LED
Color
Descriptions
LED4
Red
The system power will
be terminated and LED4
lighting when the input
voltage is over 5.7V or
the current is over 1.7A.
LED5
Green
Power normal state.
RTC Battery (CON2): External Battery supply for RTC 3.3V powered
CON2.1: Positive (+)
CON2.2: Negative (-)
System Reset (SW2): System will be reset if the SW2 button is pressed
Virtual COM (CON5, U6): NUC123ZD4AN0 microcontroller (U6), USB micro-B connector
(CON5) to PC, for debug message output
User indication LEDs (LED1, LED2, LED3):
LED
Color
GPIO pin of NUC980
LED1
Yellow
GPG15
LED2
Green
GPB13
LED3
Red
GPF10
UART1 pin header (CON15)
Connector
GPIO pin of NUC980
Function
CON15.1
GPA1
UART1_TXD
CON15.2
GPA0
UART1_RXD
CON15.3
-
VDD33
CON15.4
-
VSS
QSPI0 Flash (U7, U8): Use Winbond W25N01GVZE1G 128 MB SPI-NAND (U7) for
system booting, only one (U7 or U8) SPI Flash can be used, support dual / quad mode
UART2 pin header (CON17)
Connector
GPIO pin of NUC980
Function
CON17.1
GPA10
UART2_TXD
CON17.2
GPA9
UART2_RXD
CON17.3
-
VDD33
CON17.4
-
VSS

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UART3 pin header (CON19).
Connector
GPIO pin of NUC980
Function
CON19.1
GPC3
UART3_TXD
CON19.2
GPC4
UART3_RXD
CON19.3
-
VDD33
CON19.4
-
VSS
JTAG interface and UART0 (CON3)
Connector
GPIO pin of NUC980
Function
CON3.1
-
VDD33
CON3.2
GPG15
nTRST
CON3.3
GPG14
TDI
CON3.4
GPG13
TMS
CON3.5
GPG12
TCK
CON3.6
GPG11
TDO
CON3.7
-
nRESET
CON3.8
GPF12
UART0_TXD
CON3.9
GPF11
UART0_RXD
CON3.10
-
VSS
UART4 selection (CON9, CON11, JP1):
JP1: 1-2 short for RS232 function with RS232 transceiver, and RS232 connected DB9
female (CON9)
JP1: 2-3 short for RS485 function with RS485 transceiver, and RS485 connected to
2P terminal (CON11)
Function
GPIO pin of NUC980
UART4_232_TXD/485_D
GPD12
UART4_232_RXD/485_R
GPD13
UART4_232_RTS/485_(/RE&DE)
GPD14
UART4_232_CTS
GPD15

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User Key Matrix SWs (K1~K6)
Key
Function
GPIO pin of NUC980
K1
Row0
GPC13
Column0
GPC1
K2
Row0
GPC13
Column1
GPC2
K3
Row1
GPC14
Column0
GPC1
K4
Row1
GPC14
Column1
GPC2
K5
Row2
GPC15
Column0
GPC1
K6
Row2
GPC15
Column1
GPC2
UART5 selection (CON12, CON14, JP2):
JP2: 1-2 short for RS232 function with RS232 transceiver, and RS232 connected DB9
female (CON12)
JP2: 2-3 short for RS485 function with RS485 transceiver, and RS485 connected to
2P terminal (CON14)
Function
GPIO pin of NUC980
UART5_232_TXD/485_D
GPG14
UART5_232_RXD/485_R
GPG13
UART5_232_RTS/485_(/RE&DE)
GPG12
UART5_232_CTS
GPG11
UART6 pin header (CON16)
Connector
GPIO pin of NUC980
Function
CON16.1
GPA5
UART6_TXD
CON16.2
GPA4
UART6_RXD
CON16.3
-
VDD33
CON16.4
-
VSS
CON16.5
GPA3
UART6_RTS
CON16.6
GPA2
UART6_CTS

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Expand port for user use (CON24)
Connector
GPIO pin of NUN980
Function
CON24.1
-
ADC VSS
CON24.2
GPD8
SPI0_SS0
CON24.3
GPB0
ADC_AIN[0]
CON24.4
GPD9
SPI0_CLK
CON24.5
GPB1
ADC_AIN[1]
CON24.6
GPD10
SPI0_DO
CON24.7
GPB2
ADC_AIN[2]
CON24.8
GPD11
SPI0_DI
CON24.9
GPB3
ADC_AIN[3]
CON24.10
GPG6
PWM10
CON24.11
-
ADC VDD33
CON24.12
GPG7
PWM11
CON24.13
GPB8
CAN2_RXD
CON24.14
GPG8
PWM12
CON24.15
GPC0
CAN2_TXD
CON24.16
GPG9
PWM13
CON24.17
GPE10
I2C0_SDA
CON24.18
GPE12
I2C0_SCL
CON24.19
-
VDD33
CON24.20
-
VDD33
CON24.21
-
VSS
CON24.22
-
VSS
UART7 pin header (CON18)
Connector
GPIO pin of NUC980
Function
CON18.1
GPB6
UART7_TXD
CON18.2
GPB4
UART7_RXD
CON18.3
-
VDD33
CON18.4
-
VSS
CON18.5
GPB5
UART7_RTS
CON18.6
GPB7
UART7_CTS

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EBI port for user use (CON23)
Connector
GPIO pin of NUN980
Function
CON23.1
GPG0
EBI_ADDR0
CON23.2
GPG1
EBI_ADDR1
CON23.3
GPB2
EBI_ADDR2
CON23.4
GPG3
EBI_ADDR3
CON23.5
GPC0
EBI_DATA0
CON23.6
GPC1
EBI_DATA1
CON23.7
GPC2
EBI_DATA2
CON23.8
GPC3
EBI_DATA3
CON23.9
GPC4
EBI_DATA4
CON23.10
GPC5
EBI_DATA5
CON23.11
GPC6
EBI_DATA6
CON23.12
GPC7
EBI_DATA7
CON23.13
GPC8
EBI_DATA8
CON23.14
GPC9
EBI_DATA9
CON23.15
GPC10
EBI_DATA10
CON23.16
GPC11
EBI_DATA11
CON23.17
GPC12
EBI_DATA12
CON23.18
GPC13
EBI_DATA13
CON23.19
GPC14
EBI_DATA14
CON23.20
GPC15
EBI_DATA15
CON23.21
GPA6
EBI_nCS1
CON23.22
GPA7
EBI_nWE
CON23.23
GPA8
EBI_nRE
CON23.24
-
-
CON23.25
-
VIN
CON23.26
-
VIN
CON23.27
-
VDD33
CON23.28
-
VDD33
CON23.29
-
VSS
CON23.30
-
VSS

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UART8 pin header (CON20)
Connector
GPIO pin of NUC980
Function
CON20.1
GPA12
UART8_TXD
CON20.2
GPA11
UART8_RXD
CON20.3
-
VDD33
CON20.4
-
VSS
SD0/eMMC0 (CON6): Use Micro SD/eMMC memory card for system booting, data storage
or SDIO (Wi-Fi) device
Power on setting (SW1, SW2)
Switch
Status
Function
GPIO pin of NUC980
SW1.2/SW1.1
ON/ON
Boot from USB
GPG1/GPG0
SW1.2/SW1.1
ON/OFF
Boot from SD/eMMC
GPG1/GPG0
SW1.2/SW1.1
OFF/OFF
Boot from QSPI0 Flash
GPG1/GPG0
Resistance
Status
Function
GPIO pin of NUC980
R24
Solder R
Watchdog Timer OFF
GPG3
R24
Remove
Watchdog Timer ON
GPG3
Resistance
Status
Function
GPIO pin of NUC980
R25
Solder R
UART0 debug
message ON
GPG5
R25
Remove
UART0 debug
message OFF
GPG5
If SW1.2/SW1.1 status is ON / OFF
Resistance
Status
Function
GPIO pin of NUC980
SW2.2/SW2.1
ON/ON
SD0/eMMC0 boot from
GPC group
GPG9/GPG8
If SW1.2/SW1.1 status is OFF / OFF
Switch
Status
Function
GPIO pin of NUC980
SW2.2/SW2.1
ON/ON
SPI-NAND Flash boot
with 1-bit mode
GPG9/GPG8
SW2.2/SW2.1
ON/OFF
SPI-NAND Flash boot
with 4-bit mode
GPG9/GPG8

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SW2.2/SW2.1
OFF/ON
SPI-NOR Flash boot
with 4-bit mode
GPG9/GPG8
SW2.2/SW2.1
OFF/OFF
SPI-NOR Flash boot
with 1-bit mode
GPG9/GPG8
USB0 Device/HOST (CON21, JP3): USB0 Device/HOST Micro-B connector, By JP3
status or defined by the ID pin of the USB cable
USB1 HOST (CON22): USB1 for USB HOST with type-A connector
Ethernet0_PE (CON7, U9): For Ethernet port, the NUC980 support RMII interface which
add one Ethernet PHY IP101GR to RJ45 connector with LED indicator
SOC CPU: NUC980DK61Y (U5)
Ethernet1_PF (CON8, U11): For Ethernet port, the NUC980 support RMII interface which
add one Ethernet PHY IP101GR to RJ45 connector with LED indicator

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Rear View
Figure 3-2 shows the main components from the rear view of NuMaker NUC980 Serial Server
Development Board
RS232-4/5 transceivers with SN75C3232E (U13 and U15)
RS485-4/5 transceivers with SN65HVD10 (U14 and U16)
Figure 3-2 Rear View of NuMaker NUC980 Serial Server

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4 QUICK START
BSP Download
The burning tool requires a NuWriter driver to be installed on PC first. Please follow the steps below to
install the driver.
Please visit nuvoTon’s NuMicro™ website https://www.nuvoton.com/products/iot-solution/iot-
platform/numaker-server-nuc980/?group=Software&tab=2) to download the “NUC980_Linux-
4.4_BSP_v1.02.001”. Run the “WinUSB4NuVCOM.exe”before the USB cable is plugged in. The
“WinUSB4NuVCOM.exe”can be found in the “Tool”directory. Power on the NUC980 Series MPU
EVB and plug the USB cable into PC, the Windows shall find a new device and then request to install
its driver. Simply follow the installation and optional steps to install USB Driver, included VCOM driver.
Driver Installation
The programming tool requires a Nuvoton USB driver to be installed on PC first. Please follow the
steps below to install the WinUSB driver.
Run the “WinUSB4NuVCOM.exe” before the USB cable is plugged in. The “WinUSB4NuVCOM.exe”
can be found in the “Tool”directory. Power on the NUC980 Series MPU EVB and plug the USB cable
into PC, the Windows shall find a new device and request to install the driver.
Figure 4-1 Nuvoton USB Driver Installation Setup
Click “Next”. The WinUSB driver Setup Wizard will be started.

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Figure 4-2 Nuvoton USB Driver Installation
The USB serial port function is used to print some messages on PC API, such as SecureCRT,
through the standard UART protocol to help user to debug program.
Please download USB CDC driver ”TomatoUSB CDC driver” from Nuvoton’s official webpage,
executing the “NuvotonCDC_V1.00.001_Setup.exe” to install the driver:
https://www.nuvoton.com/products/iot-solution/iot-platform/numaker-tomato/?group=Software&tab=2
Hardware Setting
1. Connect the USB micro-B port (CON5) to the PC HOST.
The PC HOST will supply 5V power to the NuMaker NUC980 Serial Server and will recognize

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the board as a USB composite device.
The VCOM port function is used to print some messages on some Terminal Tools, such as Tera
Term, PuTTY, etc. It is through the standard UART protocol to help user to debug.
Figure 4-3 Hardware Setting
2. Plug in the USB0 cable (CON21)
If the installation is successful, a virtual COM port named “WinUSB driver (Nuvoton VCOM)” can
be found in the “Device Manager”.

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Figure 4-4 Nuvoton VCOM