Retired Product

This product has been retired from our catalog and is no longer for sale. This page is made available for those looking for datasheets and the simply curious.

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Description: Replacement: None. We are no longer carrying this product in our catalog. This page is for reference only.

Development board for the SAM7 ARM processor.

Dimensions: 4.7x3.15" (80x120 mm)


  • MCU: AT91SAM7S256 16/32 bit ARM7TDMI™ with 256K Bytes Program Flash, 64K Bytes RAM, USB 2.0, RTT, 10 bit ADC 384 ksps, 2x UARTs, TWI (I2C), SPI, 3x 32bit TIMERS, 4x PWM, SSC, WDT, PDC (DMA) for all peripherals, up to 60MHz operation
  • Standard JTAG connector with ARM 2x10 pin layout for programming/debugging with ARM-JTAG
  • USB connector
  • Two channel RS232 interface and drivers
  • SD/MMC card connector
  • Two buttons
  • Trimpot connected to ADC
  • Thermistor connected to ADC
  • two status LEDs
  • On board voltage regulator 3.3V with up to 800mA current
  • Single power supply: 6V AC or DC required
  • Power supply LED
  • Power supply filtering capacitor
  • Reset circuit
  • Reset button
  • 18.432MHz crystal on socket
  • Extension headers for all uC ports
  • PCB: FR-4, 1.5 mm (0.062"), soldermask, silkscreen component print


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Customer Comments

  • After I install Atmel SAM BA and connect this board via USB. The system is unable to identify this board. Do I need to install some USB driver for this? How can I make this work?


  • This actually has 3 USART:s. Two with full capability and one “Debug Interface” that you are free to use for whatever. It has not DTR and such but it should still count as an USART.

  • Warning, as of 3/27/09 the SAM7-P256 Schematic on this page is out of date. SparkFun is now shipping the Rev. E board and the proper schematic can be found here:
    Using wrong schematic causes a lot of head scratching trying to get the USB going :-(.

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