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The MACH-ETH is an automotive network interface that features one Ethernet port, two CAN FD channels, a LIN channel, a USB and RS-232 port, and multiple I/Os. The device can act as a Ethernet-CAN(/FD) or Ethernet-LIN interface as well as CAN(/FD)-LIN gateway, and a user-scripting feature allows to run user applications directly on the device. The open communication protocol enables access to interface’s channels over Ethernet or USB.

The communication protocol over Ethernet or USB enables access to CAN(/FD) and LIN bus channels over TCP/IP or virtual COM port respectively.

A user-scripting feature, which allows to run user applications directly on the MCU, can be used for HiL testing and rest-bus simulations. The device can act as an interface, a gateway, or bridge between all its channels.

An analogue input and a digital output enable the user to interact with external peripherals.


The open communication protocol (API) allows you to easily access CAN(/FD) and LIN channels over Ethernet TCP/IP or USB VCP. Over the protocol, the user can configure the CAN/CAN FD/LIN channels and transmit and receive frames.

User Programming

  • Firmware customizable in C/C++
  • Free-of-charge C language SDK
  • Free-of-charge IDE and C/C++ compiler
  • Firmware update over USB, Ethernet or ICSP

Usage Examples

  • ETH-CAN(/FD) and ETH-LIN interface
  • CAN(/FD) – LIN gateway
  • CAN – CAN-FD gateway
  • Remaining bus simulations
  • User-programmable HiL simulations
  • 10/100 Ethernet port
  • 2 CAN channels with CAN FD support
  • LIN channel
  • USB 2.0
  • RS-232
  • Analogue input and digital output
  • 4 DIP switches
  • 10 status LEDs
  • Open communication protocol for integration over Ethernet and USB
  • User-programmable
  • Externally or USB-powered
  • Table-top use or DIN-rail mount
Property Value
The information herein is subject to change without notice.
Communications and User-Programming
Channels 1 Fast Ethernet (10BASE-T / 100BASE-TX, IEEE 802.3u)
2 CAN-HS (ISO 11898-2) with CAN FD support (ISO 11898-1:2015; CAN 2.0A/B, ISO CAN FD)
1 LIN bus (supports both master and slave; ISO 17987; LIN 2.2a)
1 USB 2.0 CDC (Virtual COM port)
1 RS-232
Integration Communication protocol for accessing CAN-FD and LIN channels over Ethernet (TCP/IP) and USB (VCP)
User-programming Free-of-charge C SDK with programming examples
Free-of-charge IDE and GNU C/C++ compiler (STM32CubeIDE)
Firmware update over Ethernet, USB, or ICSP (ST-LINK)
Debugging ST-LINK SWD (a programming header required)
Transreceivers CAN-FD: MCP2562FD
Ethernet: KSZ8041
I/O 1 Analogue input (0-5 V)
1 Digital output (5 V push-pull, 0.5 A, PWM capable)
LEDs 5 Dual-colour LEDs
2 Single-colour LEDs
2 ETH LEDs (RJ-45 connector)
1 Power LED
MCU STM32H7 (1 MB Flash, 564 KB RAM)
Power USB-powered over Micro-USB (not for LIN bus)
External 9 - 30 V DC power input (polarity and surge protection) over DSUB connector or terminal block
Consumption 100 mA @ 12 V
Connectors 2 DSUB9M
1 RJ-45
1 Micro-USB
1 Terminal block (2-pin)
Switches 4 DIP switches
Dimensions (L x W x H) 108 x 82 x 33 mm
Weight 185 g
Operating temperature -20 to 70 °C
Enclosure Aluminium profile
Protection IP20
Placement Table (adhesive pads included) DIN-rail mount (see Ordering Information)
MACH-ETH Data Sheet
Data sheet for the MACH-ETH