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Processor: ST STM32MP1

ETRA SOM is the brand new solution made by DAVE Embedded Systems, based on the recent ST STM32MP1 application processor. ETRA SOM is a new solution available for the industry with particular attention to low power consumption with its ARM Dual Cortex-A7 architecture.

ETRA SOM main features:

  • Dual core ARM Cortex A7
  • pin to pin compatibility with AXEL ULite SOM based on i.MX6 UL
  • NOR SPI on board
  • NAND SLC or eMMC mass storage devices
  • Advanced security thanks to Secure Boot, Crypto Engine, etc.
  • ETHernet 10/100Mbps
  • Integrated peripheral expansion with multiple GPI/GPO/timers and keypad signals
  • Single 5V Power Supply


Block Diagram


TOP View
Technical Information


ARM Cortex A7 @ 600MHz or 800 MHz
Cortex-M4 @ 209MHz
single and Dual, GPU, Security

Supervisor On-board power supply supervision
and power sequencer; Watchdog and RTC
Cache L1: 32Kbyte instruction, 32Kbyte data
L2: Unified data/instruction, 256 K
  • SDRAM: Up to 512 DDR3-LV, x16 data bus width
  • NOR: SPI NOR 4 - 32 MB on request
  • eMMC or NAND SLC: All sizes, on request. Not available simultaneously 
  • LAN: Ethernet 10/100 Mbps (PHY on board) 
  • UART: up to 8x UART ports
  • USB: up to 2x 2.0 OTG port (PHY on board)
  • CAN: up to 2x CAN
  • SDIO: up to 2x SDIO/MMC 1/4/8bit mode 
  • Audio: Up to 4 I²S / SAI and 1x SPDIF
  • Video Output:
    • x RGB Parallel port 24 bit
    • 1x DSI
  • Video Input: 1x CSI port 8/12/14 bit paralle
  • I/O Expander: Multiple I/O available with ADP5889
  • RTC/Watchdog: available both on board
  • Other:
    • up to 6x I2C channels
    • up to 6x SPI channels
    • GPIOs with interrupt capabilities
    • up to 2x 8/10/12/14/16 ADC (12bit)
    • up to Dual DAC
  • Connectors: SODIMM 204 pins
  • Size: 67.50mm x 25.40mm
  • Temperature range:
    • Commercial (0°C / +70°C) temperature range
    • Industrial (-40°C / +85°C) temperature range
Power Supply
Input: Single 5V +/- 5%, on-board voltage regulation very low power stand by

Linux: U-Boot / Kernel 5.x or newer
Other options can be available. Visit wiki.dave.eu for details about DESK: DAVE Embedded Software Kit


Evaluation kits

The official evaluation kit for ETRA SOM. This solution includes a SOM and all necesary for the fast and easy evaluation

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