Atmel SAM Family

The Atmel SAM D20 family uses the ARM Cortex-M0+ core. Peripherals include general purpose serial comms, timer/counters, PWMs, ADCs, a DAC, and capacitive touch channels. Go to their website for more information.

Annotated hardware diagram of the Atmel SAM3U development kit. Image from www.digikey.com.

Programming Header

There are a number of different programming protocols you can use with the Atmel SAMD family. This includes the ARM SWD protocol. The pinout used by the Atmel-ICE programming is shown below:

The pin mapping for the Atmel-ICE programmer when using the SWD programming interface. Image from http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-42330-Atmel-ICE_UserGuide.pdf.