Nuvoton NuMicro NuMaker-M256SD User Manual
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Nuvoton NuMicro NuMaker-M256SD User Manual

Arm cortex-m23-based microcontroller
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NuMaker-M256SD
NuMicro
®
Family
Arm
®
Cortex
®
-M23-based Microcontroller
NuMaker-M256SD
User Manual
Evaluation Board for NuMicro
®
M254/256/258 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
May 20, 2022
Page 1 of 52
Rev 1.00

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Summary of Contents for Nuvoton NuMicro NuMaker-M256SD

  • Page 1 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.

  • Page 2: Table Of Contents

    3.11.2 Status LEDs ........................29 4 QUICK START ....................30 4.1 Toolchains Supporting ....................30 4.2 Nuvoton Nu-Link Driver Installation ................30 4.3 BSP Firmware Download ................... 32 4.4 Hardware Setup ......................32 4.5 Find the Example Project ................... 34 4.6 Execute the Project under Toolchains ..............
  • Page 3 NuMaker-M256SD 4.6.2 IAR EWARM ........................38 4.6.3 NuEclipse ......................... 39 5 NUMAKER-M256SD SCHEMATICS ............. 46 5.1 Nu-Link2-Me ......................... 46 5.2 M256SD Target Board ....................47 5.3 Extension Connectors ....................48 5.4 Touch Key ........................49 5.5 PCB Placement ......................50 6 REVISION HISTORY ..................
  • Page 4 NuMaker-M256SD List of Figures Figure 1-1 NuMaker-M256SD Evaluation Board ................7 Figure 3-1 Front View of NuMaker-M256SD ..................9 Figure 3-2 Rear View of NuMaker-M256SD .................. 10 Figure 3-3 M256SD2AE Extension Connectors ................11 Figure 3-4 Arduino UNO Compatible Extension Connectors ............16 Figure 3-5 External Power Supply Sources on Nu-Link2-Me ............
  • Page 5 NuMaker-M256SD Figure 4-27 Startup Tab Configuration ..................44 Figure 4-28 NuEclipse Debug Mode ....................45 Figure 4-29 Debug Message on Serial Port Terminal Windows ............ 45 Figure 5-1 Nu-Link2-Me Circuit ...................... 46 Figure 5-2 M256SD Target Board Circuit ..................47 Figure 5-3 Extension Connectors Circuit ..................
  • Page 6 NuMaker-M256SD List of Tables Table 3-1 Extension Connectors ....................11 Table 3-2 M256SD2AE Full-pin Extension Connectors and GPIO Function List ......13 Table 3-3 NuMaker-TNLCDSub_M256SD Extension Connectors and M256SD2AE Mapping GPIO List ............................15 Table 3-4 Arduino UNO Extension Connectors and M256SD2AE Mapping GPIO List ....17 Table 3-5 Vin Power Source ......................

  • Page 7: Overview

    Machine Interface applications. For developing touch key system and fine tuning associated environment variables easily to adjust sensitivity of the touch key, Nuvoton provides NuTool – NuSenadj to set hardware and software parameters automatically. For the development flexibility, the M256SD target board provides the extension connectors, the Arduino UNO compatible headers and the capability of adopting multiple power supplies.

  • Page 8: Features

    NuMaker-M256SD FEATURES  NuMicro M256SD2AE used as main microcontroller with function compatible with: M254MD2AE – M254SD2AE – M256MD2AE –  M256SD2AE full pins extension connectors HTN-LCD panel can be plugged into extension connectors –  Arduino UNO compatible extension connectors ...

  • Page 9: Hardware Configuration

    NuMaker-M256SD HARDWARE CONFIGURATION Front View Arduino UNO Compatible Extension Connectors Switch Reset Button External V Connector USB Power Connector Ammeter VCOM Switch ICE USB Connector TK1 Touch Key ICE Chip: M48SSIDAE TK3 Shielding ICE Status LED Off-line Program Button External V Connector External V Connector...

  • Page 10: Rear View

    NuMaker-M256SD Rear View Figure 3-2 shows the main components and connectors from the rear side of NuMaker-M256SD. 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-M256SD May 20, 2022...

  • Page 11: Extension Connectors

    NuMaker-M256SD Extension Connectors Table 3-1 presents the extension connectors. Connector Description JP3, JP4, JP5, JP6, JP7, Full pins extension connectors on the NuMaker-M256SD. JP8, JP9 and JP10 NU1, NU2, NU3 and Arduino UNO compatible pins on the NuMaker-M256SD. Table 3-1 Extension Connectors 3.3.1 Pin Assignment for Extension Connectors The NuMaker-M256SD provides the M256SD2AE onboard and extension connectors (JP3, JP4, JP5, JP6, JP7, JP8, JP9 and JP10).
  • Page 12 NuMaker-M256SD M256SD2AE Header Function JP3.1 JP9.1 PB.6/EADC0_CH6/UART1_RXD/LCD_SEG4/INT4/ACMP1_O JP3.2 JP9.2 PB.5/EADC0_CH5/ACMP1_N/LCD_COM0/I2C0_SCL/SC0_CLK/UART2_TXD/TM0/INT0 JP3.3 JP9.3 PB.4/EADC0_CH4/ACMP1_P1/LCD_COM1/I2C0_SDA/SC0_DAT/UART2_RXD/TM1/INT1 JP3.4 JP9.4 PB.3/EADC0_CH3/ACMP0_N/LCD_COM2/UART1_TXD/SC0_RST/TM2/INT2 JP3.5 JP9.5 PB.2/EADC0_CH2/ACMP0_P1/LCD_COM3/UART1_RXD/SC0_PWR/TM3/INT3 JP3.6 JP9.6 PB.1/EADC0_CH1/LCD_SEG1/UART2_TXD JP3.7 JP9.7 PB.0/EADC0_CH0/LCD_SEG0/UART2_RXD/SPI0_I2SMCLK JP3.8 JP9.8 PA.11/ACMP0_P0/USCI0_CLK/BPWM0_CH0/TM0_EXT JP3.9 JP9.9 PA.10/ACMP1_P0/USCI0_DAT0/BPWM0_CH1/TM1_EXT JP3.10 JP9.10 PA.9/USCI0_DAT1/UART1_TXD/BPWM0_CH2/TM2_EXT JP3.11 JP9.11 PA.8/USCI0_CTL1/UART1_RXD/BPWM0_CH3/TM3_EXT/INT4 JP3.12 JP9.12 JP3.13 JP9.13 PF.14/CLKO/TM3//INT5 JP3.14...

  • Page 13: Table 3-2 M256Sd2Ae Full-Pin Extension Connectors And Gpio Function List

    NuMaker-M256SD M256SD2AE Header Function JP4.3 JP7.3 PC.5/LCD_SEG31/LCD_COM4/TK_TK9/UART2_TXD JP4.4 JP7.4 PC.4/LCD_SEG30/LCD_COM5/TK_TK10/UART2_RXD JP4.5 JP7.5 PC.3/LCD_SEG29/LCD_COM6/TK_TK11/UART2_nRTS/I2C0_SMBAL JP4.6 JP7.6 PC.2/LCD_SEG28/LCD_COM7/TK_TK12/UART2_nCTS/I2C0_SMBSUS JP4.7 JP7.7 PC.1/LCD_SEG27/LCD_COM2/UART2_TXD/I2C0_SCL/ACMP0_O JP4.8 JP7.8 PC.0/LCD_SEG26/LCD_COM3/UART2_RXD/I2C0_SDA/ACMP1_O JP4.9 JP7.9 PD.3/USCI0_CTL1/SPI0_SS/LCD_SEG25/TK_TK13/UART0_TXD JP4.10 JP7.10 PD.2/USCI0_DAT1/SPI0_CLK/LCD_SEG24/TK_TK14/UART0_RXD JP4.11 JP7.11 PD.1/USCI0_DAT0/SPI0_MISO/LCD_SEG23/TK_TK15 JP4.12 JP7.12 PD.0/USCI0_CLK/SPI0_MOSI/LCD_SEG22/TK_TK16/TM2 JP4.13 JP7.13 PA.12/LCD_SEG20/LCD_SEG47 JP4.14 JP7.14 PA.13/LCD_SEG19/LCD_SEG46 JP4.15 JP7.15 PA.14/UART0_TXD/LCD_SEG18/LCD_SEG45 JP4.16 JP7.16...

  • Page 14: 3.3.2 Numaker-Tnlcdsub_M256Sd Compatible Extension Connectors

    NuMaker-M256SD 3.3.2 NuMaker-TNLCDSub_M256SD Compatible Extension Connectors Table 3-3 shows the NuMaker-TNLCDSub_M256SD compatible extension connectors. NuMaker- NuMaker-M256SD TNLCDSub_M256SD Header Pin No. Function Function JP3.1 LCD_SEG4 LCD_SEG10 JP3.2 LCD_COM0 LCD_COM3 JP3.3 LCD_COM1 LCD_COM2 JP3.4 LCD_COM2 LCD_COM1 JP3.5 LCD_COM3 LCD_COM0 JP3.6 LCD_SEG1 LCD_SEG21 JP3.7 LCD_SEG0 LCD_SEG20...

  • Page 15: Table 3-3 Numaker-Tnlcdsub_M256Sd Extension Connectors And M256Sd2Ae Mapping Gpio List

    NuMaker-M256SD JP6.5 LCD_SEG13 LCD_SEG28 JP6.6 LCD_SEG12 LCD_SEG16 JP6.7 LCD_SEG9 LCD_SEG24 JP6.8 LCD_SEG8 LCD_SEG23 JP6.9 LCD_SEG7 LCD_SEG22 JP6.10 LCD_SEG6 LCD_SEG26 JP6.11 LCD_SEG5 LCD_SEG17 Table 3-3 NuMaker-TNLCDSub_M256SD Extension Connectors and M256SD2AE Mapping GPIO List May 20, 2022 Page 15 of 52 Rev 1.00...

  • Page 16: 3.3.3 Arduino Uno Compatible Extension Connectors

    NuMaker-M256SD 3.3.3 Arduino UNO Compatible Extension Connectors Figure 3-4 shows the Arduino UNO compatible extension connectors. UART1_RXD PB.2 UART1_TXD PB.3 UART2_RXD PC.4 UART2_TXD PC.5 PC.3 PC.2 PA.7 PA.6 BPWM0_CH5 PA.5 BPWM0_CH4 PA.4 SPI0_SS BPWM0_CH3 PA.3 SPI0_MOSI BPWM0_CH0 PA.0 SPI0_MISO BPWM0_CH1 PA.1 IOREF SPI0_CLK...

  • Page 17: Table 3-4 Arduino Uno Extension Connectors And M256Sd2Ae Mapping Gpio List

    NuMaker-M256SD NuMaker-M256SD NuMaker-M256SD Header Header Compatible to Compatible to GPIO Pin of M256 GPIO Pin of M256 Arduino UNO Arduino UNO NU3.1 PB.2 NU2.6 PB.1 NU3.2 PB.3 NU2.5 PB.0 NU3.3 PC.4 NU2.4 PB.4 NU3.4 PC.5 NU2.3 PB.5 NU3.5 PC.3 NU2.2 PB.6 NU3.6 PC.2...

  • Page 18: Power Supply Configuration

    NuMaker-M256SD Power Supply Configuration The NuMaker-M256SD is able to adopt multiple power supplies. External power sources include NU1 Vin (7 V to 12 V), V (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- M256SD.

  • Page 19: Power Sources

    NuMaker-M256SD 3.4.3 3.3 V Power Sources Table 3-7 presents the 3.3 V power sources. Voltage 5 V Source Description Regulator ICEUP1 converts USB_HS_VBUS to 3.3 V and ICEUP1 USB_HS_VBUS supplies 3.3 V to M256SD target board or ICE chip. UP1 converts USB_VBUS to 3.3 V and supplies 3.3 V to M256SD target board.

  • Page 20: Usb Connectors

    NuMaker-M256SD 3.4.6 USB Connectors Table 3-10 presents the USB connectors. Connector Description ICE USB connector on Nu-Link2-Me for power supply, debugging and ICEJ3 programming from PC. USB Power connector on NuMaker-M256SD for power supply. Table 3-10 USB Connectors 3.4.7 Power Switches Table 3-11 presents the power switches.

  • Page 21: Figure 3-6 External Power Supply Sources On M256Sd Target Board

    NuMaker-M256SD 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 3-12 presents all power models when supplying external power through Nu-Link2-Me. The Nu- Link2-Me external power sources are highlighted in yellow.

  • Page 22: Figure 3-7 Detach The Nu-Link2-Me From Numaker-M256Sd

    NuMaker-M256SD 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. To use Vin or J2 as external power supply source with Nu-Link2-Me detached from NuMaker- M256SD, please follow the steps below: Switch the SW2 depending on the target chip operating voltage.

  • Page 23: Table 3-13 Supply External Power For M256Sd Target Board

    NuMaker-M256SD Table 3-13 presents all power models when supplies external power through M256SD target board. The M256SD target board external power sources are highlighted in yellow. ICEJPR1 ICEJPR2 Target Chip ICE Chip Model ICEJ3 (MCUVCC) (ICEVCC) Voltage Selection Voltage Selection Selection 7 V ~ 12 V Remove...

  • Page 24: External Reference Voltage Connector

    NuMaker-M256SD External Reference Voltage Connector Table 3-14 presents the external reference voltage connector. Connector Description Connector for user to connect to the external reference voltage pin of the VREF1 target chip. User needs to remove the L5 ferrite bead. Table 3-14 External Reference Voltage Connector Ammeter Connector Table 3-15 presents the ammeter connector.

  • Page 25: Push Buttons

    NuMaker-M256SD Push Buttons Table 3-17 presents the push buttons. Component Description ICESW1 Offline program button to start offline ICP programming the target chip. Reset button to reset the target chip. Table 3-17 Push Buttons LEDs Table 3-18 presents the LEDs. Component Description Power LED...

  • Page 26: 3.10 Lcd Panel

    NuMaker-M256SD 3.10 LCD Panel The LCD on the NuMaker-M256SD with 8 x 26 COM/SEG can be used to show some information such as time, battery status, temperature, and humidity. The part number of LCD panel is RHE6616TP01 made by TRICOMTEK. Figure 3-9 shows the LCD digit segment mapping table. Table 3-20 shows the pin map for the LCD.

  • Page 27: Table 3-20 Lcd Pin Mapping Table

    NuMaker-M256SD COM4 COM5 COM6 COM7 COM8 COM1 COM1 COM2 COM2 COM3 COM3 COM4 COM4 COM5 COM5 COM6 COM6 COM7 COM7 COM8 COM8 COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 Table 3-20 LCD Pin Mapping Table May 20, 2022 Page 27 of 52 Rev 1.00...

  • Page 28: 3.11 Nu-Link2-Me

    NuMaker-M256SD 3.11 Nu-Link2-Me The Nu-Link2-Me is an attached on-board debugger and programmer. The Nu-Link2-Me supports on- chip debugging, online and offline ICP programming through SWD interface. The Nu-Link2-Me also supports virtual COM port (VCOM) for printing debug messages on PC. Besides, the programming status could be shown on the built-in LEDs.

  • Page 29: Status Leds

    NuMaker-M256SD 3.11.2 Status LEDs Table 3-22 presents the status LEDs patterns for different operation on Nu-Link2-Me. Status LED Operation Status ICES0 ICES1 ICES2 ICES3 Boot Flash x 3 Flash x 3 Flash x 3 Flash x 3 Idle One Nu-Link2-Me is selected to connect Flash x 3 Flash x 3 Flash x 3...

  • Page 30: Quick Start

    KEIL MDK Nuvoton edition M0/M23  IAR EWARM  NuEclipse GCC (for Windows)  NuEclipse GCC (for Linux) Nuvoton Nu-Link Driver Installation Download and install the latest Nuvoton Nu-Link Driver.  Download and install Nu-Link_Keil_Driver when using Keil MDK.  Download and install Nu-Link_IAR_Driver when using IAR EWARM.

  • Page 31: Figure 4-2 Nu-Link Usb Driver Installation

    NuMaker-M256SD Figure 4-2 Nu-Link USB Driver Installation May 20, 2022 Page 31 of 52 Rev 1.00...

  • Page 32: Bsp Firmware Download

    NuMaker-M256SD BSP Firmware Download Download and unzip the Board Support Package (BSP). Hardware Setup 1. Open the virtual COM (VCOM) function by changing Nu-Link2-Me VCOM Switch No. 1 and 2 to ON. Figure 4-3 Open VCOM Function 2. Connect the ICE USB connector shown in Figure 4-4 to the PC USB port through a USB cable.

  • Page 33: Figure 4-5 Device Manger

    NuMaker-M256SD 3. Find the “Nuvoton Virtual COM Port” on the Device Manger as Figure 4-5. Figure 4-5 Device Manger 4. Open a serial port terminal, PuTTY for example, to print out debug message. Set the speed to 115200. Figure 4-6 presents the PuTTY session setting.

  • Page 34: Find The Example Project

    NuMaker-M256SD Find the Example Project Use the “Template” project as an example. The project can be found under the BSP folder as shown in Figure 4-7.  M251_M252_M254_M256_M258_Series_BSP_CMSIS_V3.XX.XXX  SampleCode  Template   Keil  Figure 4-7 Template Project Folder Path Execute the Project under Toolchains Open and execute the project under the toolchain.

  • Page 35: Figure 4-9 Project File Migrate To Version 5 Format

    NuMaker-M256SD Figure 4-9 Project File Migrate to Version 5 Format 2. Make sure the debugger is “Nuvoton Nu-Link Debugger” as shown in Figure 4-10 and Figure 4-11. Figure 4-10 Debugger Setting in Options Window Note: If the dropdown menu in Figure 4-10 does not contain “Nuvoton Nu-Link Debugger” item, please rework section 4.2.

  • Page 36: Figure 4-11 Programming Setting In Options Window

    NuMaker-M256SD Figure 4-11 Programming Setting in Options Window 3. Rebuild all target files. After successfully compiling the project, download code to the Flash memory. Click “Start/Stop Debug Section” button to enter debug mode. 1. Rebuild 2. Successfully compile 3. Download 4.

  • Page 37: Figure 4-13 Keil Mdk Debug Mode

    NuMaker-M256SD 4. Figure 4-13 shows the debug mode under Keil MDK. Click “Run” and the debug message will be printed out as shown in Figure 4-14. User can debug the project under debug mode by checking source code, assembly language, peripherals’ registers, and setting breakpoint, step run, value monitor, etc.

  • Page 38: Iar Ewarm

    NuMaker-M256SD 4.6.2 IAR EWARM This section provides steps to beginners on how to run a project by using IAR EWARM. 1. Double click the “Template.eww” to open the project. 2. Make sure the toolbar contains “Nu-Link” item as shown in Figure 4-15. Note: If the toolbar does not contain “Nu-Link”...

  • Page 39: Nueclipse

    NuMaker-M256SD 4. Figure 4-17 shows the debug mode under IAR EWARN. Click “Go” and the debug message will be printed out as shown in Figure 4-18. User can debug the project under debug mode by checking source code, assembly language, peripherals’ registers, and setting breakpoint, step run, value monitor, etc.

  • Page 40: Figure 4-19 Import The Project In Nueclipse

    NuMaker-M256SD Figure 4-19 Import the Project in NuEclipse M031_Series_BSP_CMSIS_V3.XX.XXX\SampleCode\Template M031_Series_BSP_CMSIS_V3.XX.XXX\SampleCode\Template\GCC) Figure 4-20 Import Projects Windows 3. Click the “Template” project and find the project properties as shown in Figure 4-21. Make sure the settings are the same as settings in Figure 4-22. May 20, 2022 Page 40 of 52 Rev 1.00...

  • Page 41: Figure 4-21 Open Project Properties Window

    NuMaker-M256SD Figure 4-21 Open Project Properties Window Figure 4-22 Project Properties Settings 4. Click the “Template” project and build the project. May 20, 2022 Page 41 of 52 Rev 1.00...

  • Page 42: Figure 4-23 Build Project

    NuMaker-M256SD Figure 4-23 Build Project 5. After the project is built, click the “Template” project and set the “Debug Configuration” as shown in Figure 4-24. Follow the settings presented in Figure 4-25, Figure 4-26 and Figure 4-27 to enter debug mode. Figure 4-24 Open Debug Configuration May 20, 2022 Page 42 of 52...

  • Page 43: Figure 4-25 Main Tab Configuration

    NuMaker-M256SD Note 1: Double-click the “GDB Nuvoton Nu-Link Debugging” to create the sub item. Note 2: After the project is built, the “*.elf” file will be shown in “C/C++ Application” frame. Figure 4-25 Main Tab Configuration Figure 4-26 Debugger Tab Configuration...

  • Page 44: Figure 4-27 Startup Tab Configuration

    NuMaker-M256SD Note: User must follow those settings highlighted in green, and configure other settings depending on the needs. Figure 4-27 Startup Tab Configuration May 20, 2022 Page 44 of 52 Rev 1.00...

  • Page 45: Figure 4-28 Nueclipse Debug Mode

    NuMaker-M256SD 6. Figure 4-28 shows the debug mode under NuEclipse. Click “Resume” and the debug message will be printed out as shown in Figure 4-29. User can debug the project under debug mode by checking source code, assembly language, peripherals’ registers, and setting breakpoint, step run, value monitor, etc.

  • Page 46: Numaker-M256Sd Schematics

    NuMaker-M256SD NUMAKER-M256SD SCHEMATICS Nu-Link2-Me Figure 5-1 shows the Nu-Link2-Me circuit. 3.3V ICER1 O f f - page C onnect or 200 1% USB_HS_CAP R0603 ICE5V ICEC1 ICEC2 ICE5V 0.1u MCUVCC_DIODE C0603 C0603 MCUVCC_DIODE SWDH_DAT TICEDAT SWDH_CLK TICECLK SWDH_RST# TICERST ICE_RX_S MCU_TX ICE_TX_S MCU_RX...

  • Page 47: M256Sd Target Board

    NuMaker-M256SD M256SD Target Board Figure 5-2 shows the M256SD target board circuit. P1 - P16 P33 - P48 PF0_ICE_DAT PB6_NU2_A1 TICEDAT PF1_ICE_CLK PB5_NU2_A2 TICECLK PB4_NU2_A3 PC5_NU3_D3 PB3_NU3_D1/TX PC4_NU3_D2 PB2_NU3_D0/RX PC3_NU3_D4 PB1_NU2_A5/TX PC2_NU3_D5 PB0_NU2_A4/RX PC1_NU4_SCL PA11_NU5_CLK PC0_NU4_SDA PA10_NU5_MOSI PA9_NU5_MISO PA8_NU5_SS VLCD VLCD PF14 PA12...

  • Page 48: Extension Connectors

    NuMaker-M256SD Extension Connectors Figure 5-3 shows extension connectors of NuMaker-M256SD. P1 - P16 P33 - P48 PB6_NU2_A1 TICEDAT PB5_NU2_A2 TICECLK PC1_NU4_SCL I2C_SCL PB4_NU2_A3 PC5_NU3_D3 PC0_NU4_SDA I2C_SDA PB3_NU3_D1/TX PC4_NU3_D2 VREF VREF PB2_NU3_D0/RX PC3_NU3_D4 MCUVCC_DIODE PB1_NU2_A5/TX PC2_NU3_D5 TICERST PA2_NU3_D13/CLK MCU_RESET PB0_NU2_A4/RX PC1_NU4_SCL NU1_3VCC PA1_NU3_D12/MISO 3VCC...

  • Page 49: Touch Key

    NuMaker-M256SD Touch Key Figure 5-4 shows touch key of NuMaker-M256SD. PD15_TK0 PA5_NU3_D8_TK1 PA3_NU3_D10/SS_TK3 Touch Keys offpage CTKey 0.8x08 (NC) REF (NC) Touch Key reference PCB Touch Keys TOP SHILED SHILEDING1 Top Layer Shielding SHILEDING (NC) Ti t l e NuMaker-PFM-M256SD Si z e D ocum ent N um ber R ev...

  • Page 50: Pcb Placement

    NuMaker-M256SD PCB Placement Figure 5-5 and Figure 5-6 show the front and rear placement of NuMaker-M256SD. Figure 5-5 Front Placement Figure 5-6 Rear Placement May 20, 2022 Page 50 of 52 Rev 1.00...

  • Page 51: Revision History

    NuMaker-M256SD REVISION HISTORY Date Revision Description Initial version. 2022.05.20 1.00 May 20, 2022 Page 51 of 52 Rev 1.00...
  • Page 52 NuMaker-M256SD Important Notice Nuvoton Products are neither intended nor warranted for usage in systems or equipment, any malfunction or failure of which may cause loss of human life, bodily injury or severe property damage. Such applications are deemed, “Insecure Usage”.

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