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    Product Updates
          Products >  Development Boards >  MYD-C437X-PRU (TI AM437x) > MYD-C437X-PRU Development Board
MYD-C437X-PRU Development Board

MYD-C437X-PRU Development Board

- MYC-C437X CPU Module as Controller Board
- Up to 1GHz TI AM437x Series ARM Cortex-A9 Processors
- Serial ports, USB Host, Device, CAN, RS485, Camera, TF, LCD
- 1 x Gigabit Ethernet, 2 x PRU-ICSS Ethernet ports
- Optional 4.3 or 7 inch LCD/TSP
- Supports Linux 4.1.18 and SYS/BIOS 6.45 (TI-RTOS) OS


The MYD-C437X-PRU Development Board is a complete evaluation platform especially designed for users to take full advantages of the Programmable Real-time Unit (PRU) as well as the 3D graphics acceleration features from Texas Instruments (TI) Sitara AM437x ARM Cortex-A9 processors. It can support -40 to +85 Celsius extended temperature operation and is ideal for industrial communications, industrial control, and industrial drives applications.

The MYD-C437X-PRU development board employs the MYC-C437X CPU Module as the core controller board which is mounted onto the MYD-C437X-PRU base board through two 0.8mm pitch 2*100-pin board-to-board connectors. The CPU Module has the core components AM437x processor, 512MB DDR3, 4GB eMMC flash, 32KB EEPROM, Ethernet PHY and PMIC integrated on board. The base board has additionally extended a rich set of peripherals through headers and connectors from the SOM and some extended controller chips including three serial ports, one USB Host ports, one Mini USB Device port, one Gigabit Ethernet, two 10/100Mbps Ethernet ports from the PRU-ICSS subsystems, one CAN, one RS485, one Camera interface, one Micro SD, LCD, Touch screen and more others.

MYD-C437X-PRU Development Board

The AM437x processor family consists of 4 pin-pin compatible devices (AM4376, AM4377, AM4378 and AM4379) with various options including speed grades, packages, graphics and peripherals. MYIR delivers the MYD-C437X-PRU board with AM4377 processor by default which is able to support EtherCAT through two PRU-ICSS Ethernet ports and run TI SYS/BIOS v6.45 Real-time Operating System.

TI AM437x Devices

The MYD-C437X-PRU board comes with necessary cable accessories and a product disk containing the Linux 4.1.18 and TI RTOS (SYS/BIOS 6.45) software packages and detailed documents. The complete platform provides a quick AM437x starter kit for users when getting the goods out-of-the-box right away.


Mechanical Parameters

  • Dimensions: 150mm x 105mm (base board), 60mm x 45mm (CPU Module)
  • PCB Layers: 4-layer design (base board), 8-layer design (CPU Module)
  • Power supply: +12V/1.5A (base board), +5V/0.33A (CPU Module)
  • System static power: 12V/0.35A (base board + CPU module) at the most
  • Working temperature: -40~85 Celsius (industrial grade)

The MYD-C437X-PRU Controller Board (MYC-C437X CPU Module)


                                         (Top-view)                                                                                  (Bottom-view)

  • TI AM437x (AM4376, AM4377, AM4378 and AM4379)
    - Up to 1GHz Sitara ARM Cortex-A9 32-Bit RISC processor
    - POWERVR SGX Graphics Accelerator subsystem for 3D graphics acceleration to support display and gaming effects
    - Single-cycle vector floating point (VFP)
    - Dual camera and display processing subsystem
    - Cryptographic acceleration and secure boot
    - PRU-ICSS enables simultaneous industrial Ethernet protocols and motor feedback protocols
    - Support for 32 bit LPDDR2/DDR3/DDR3L
    - Low power: ~5mW deep sleep and < 0.1mW RTC-only
    - Simplified power sequence for flexible power design


  • 512MB DDR3 SDRAM (256MB is optional)
  • 4GB eMMC Flash (reserved 256/512MB Nand Flash design)
  • 16MB QSPI Flash (reserved design, not soldered)

Peripherals and Signals Routed to Pins
MYC-C437X Pinouts Description

  • Power Management IC (TPS65218B1RSLR)
  • Gigabit Ethernet PHY
  • One power indicator (Red LED)
  • One user LED (Green)
  • Two 0.8mm pitch 100-pin board-to-board expansion connectors can carry out interfaces below:
  • - 2 x USB
    - 6 x Serial ports
    - 2 x I2C
    - 2 x CAN
    - 2 x SPI
    - 14 x ADC (8 channels from ADC1 and 6 channels from ADC0)
    - 3 x SDIO

The MYD-C437X-PRU Base Board (MYB-C437X-PRU)

  • Serial ports
  • - 1 x 3-wire RS232 Debug serial port
    - 1 x 5-wire RS232 serial port (J14)
    - 1 x 5-wire RS232 serial port (J14)
    - 1 x RS485 (with isolation)
  • USB
  • - 1 x USB 2.0 Host port
    - 1 x Mini USB 2.0 Device port
  • 1 x Gigabit Ethernet interface
  • 2 x 10/100 Mbps PRU-ICSS Ethernet interfaces
  • 1 x CAN interface (with isolation)
  • 1 x TF card slot
  • 1 x 16-bit LCD interface
  • 1 x 24-bit LCD interface
  • 1 x Camera interface (0.5mm pitch 30-pin FPC connectors)
  • 1 x 4-wire resistive touch screen interface
  • 1 x 2.54mm pitch 14-pin JTAG interface
  • 4 x Buttons (1 x Reset button, 1 x PMIC, 2 x User buttons)
  • 1 x Power indicator (Red LED)
  • 3 x User LEDs (Blue)
  • 3 x 2.0mm 20-pin expansion connectors
  • - 8 x ADC
    - 2 x SPI
    - 1 x I2C
    - 2 x UART
    - PRU-UART (supports PROFIBUS)
    - 2 x EnDat
    - 2 x eQEP
    - eHRPWM

* The LCD display function cannot be used with the EtherCAT function at the same time due to reused signals.

* The LCD interface can be either selected to use the 16-bit LCD interface or 24-bit LCD interface.

OS Support

  • Linux 4.1.18
  • SYS/BIOS 6.45 (TI-RTOS)

Hardware Features

The TI AM437x high-performance processors are based on the ARM Cortex-A9 core. Customers using this next generation solution will see an increase in performance, as well as extensive reuse from the ARM Cortex-A8 offerings.

Increasing performance and peripheral support
Sitara AM437x processors deliver the right balance of:
•       Up to 1GHz of processing power
•       3D graphics accelerator
•       On-chip quad-core PRU co-processor for real-time processing
•       Improved vector floating-point unit

•       LPDDR2/DDR3
•       QSPI
•       Display subsystem

•       Two parallel camera ports
•       Dual-port 1Gb Ethernet switch
•       Two independent, eight-channel ADCs
•       WiLink connectivity drivers
•       Industrial protocols via PRU-ICSS

A. Use of TSC will limit available ADC0 inputs.

B. Max clock: LPDDR2 = 266 MHz; DDR3/DDR3L = 400 MHz

AM437x Function Block Diagram

MYD-C437X-PRU Development Board Function Block Diagram

Dimensions of MYD-C437X-PRU Development Board

Software Features






Bootstrap program


Bootstrap (source code)



Linux 4.1.18 (especially designed for MYD-C437X-PRU, source code)


USB Host

USB Host driver (source code)


USB OTG driver (source code)


Gigabit Ethernet driver (source code)

PRU Ethernet

Industrial Ethernet driver (source code)


MMC/SD/TF card driver (source code)

Nand Flash

Nand Flash driver (source code)


eMMC driver (source code)


CAN driver (source code)


RS485 driver (source code)

LCD Controller

LCD driver (source code, supports 4.3, 7-inch LCD)


RTC driver (source code)

Touch driver

Resistive and Capacitive touch screen driver (source code)


Button driver (source code)


LED driver (source code)


Watchdog driver (source code)


Camera driver (source code)


UART driver (source code)


SPI driver (source code)


ADC driver (source code)


I2C driver (source code)

File system


Provide image file


Provide image file





Evaluation environment

Code Composer Studio Version 6.2.x

ARM compiler

GNU V4.9.3 (Linaro)

PRU compiler

PRU 2.1.13

Application Examples

Bootloader, EtherCAT Slave Application, EtherNet/IP Adapter Application, EtherNet MAC Application, Example Utils Application

Relative Download and Links

You can download relative chip datasheet, products datasheet, user manual, software package from below. Any inquiry, please contact MYIR.

1 TI AM437x Datasheet 2.76 MB
2 TI AM437x Technical Reference Manual 19.8 MB
3 MYC-C437X CPU Module Overview 1.76 MB
4 MYC-C437X Pinouts Description 193 KB
5 MYD-C437X-PRU Base Board Schematic 782 KB
6 MYD-C437X-PRU Development Board Overview 0.99 MB

MYD-C437X-PRU Development Board

MYD-C437X-PRU Development Board Base Board (MYB-C437X-PRU)

MYC-C437X CPU Module (Top-view)

MYC-C437X CPU Module (Bottom-view)

Price and Ordering


Part No.

Unit Price


MYD-C4377-PRU Development Board
(1GHz AM4377, 512MB DDR3, 4GB eMMC, industrial grade)
MYC-C4377 CPU Module
(1GHz AM4377, 512MB DDR3, 4GB eMMC, industrial grade)
MYC-C4377-4E512D-100-I USD105
MY-LCD70TP 7 inch LCD Module with capacitive touch screen
MY-CAM002U USB Camera Module


1. The MYD-C437X-PRU development board already has one MYC-C437X CPU module mounted on its base board, if you need additional CPU module, please order extra;

2. The product is delivered with 1GHz AM4377 by default, if you need other CPU models, RAM or Flash size, please contact MYIR for availability.

3. Discount is available for mass orders. Please contact MYIR for inquires.

4. The boards of industrial grade can support -40~85 Celsius operation temperature.

5. We accept custom design based on the MYD-C437X-PRU, whether reducing, adding or modifying the existing hardware according to customer’s requirement.

Packing List

NO. Item Qty Description
1 MYD-C437X-PRU Development Board 1pc MYD-C437X-PRU Development Board
2 One Net cable 1pc
3 One USB cable 1pc
4 One 12V/1.5A power adapter 1pc
5 DVD 1pc one product DVD disk

More FAQ >>

1. What industrial protocols does the MYD-C437X-PRU support?

What industrial protocols does the MYD-C437X-PRU support?

It supports EtherCAT real-time industrial communications protocol, and we have provided an EtherCAT slave application demo.

2. Does the MYD-C437X-PRU support JTAG debugging?

Does the MYD-C437X-PRU support JTAG debugging?

Yes, there is a JTAG interface on the board. User can use XDS100V3 emulator with the Code Composer Studio 6.2.0 to debug the board.

3. What can I do if I want to add a RS422 interface on the MYD-C437X-PRU board?

What can I do if I want to add a RS422 interface on the MYD-C437X-PRU board?

You might need to implement it through serial port, adding external driver chip. 

4. Does the MYD-C437X-PRU provide EtherCAT protocol stack source codes?

Does the MYD-C437X-PRU provide EtherCAT protocol stack source codes?

Yes, the MYD-C437X-PRU development board is provided with demo version of EtherCAT slave static library not the source codes, user can apply to ETG for getting the EtherCAT protocol stack source codes for free.

5. Can the MYD-C437X-PRU support LCD and the two PRU-ICSS Ethernet ports work together?

Can the MYD-C437X-PRU support LCD and the two PRU-ICSS Ethernet ports work together?

No, it can’t. The two PRU-ICSS Ethernet ports are multiplexed with LCD signals, so the board can’t display LCD and use PRU-ICSS Ethernet ports at the same time.

More FAQ >>


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