Firmware and Testing Considerations

SYZYGY Peripheral Firmware

Provided SYZYGY peripheral firmware can facilitate the required power sequencing for peripheral designers. Since the VIO rail powers the bank IO for a given SYZYGY port, that IO should not be driven by the peripheral until after the VIO rail is up. The MCU can be used to detect a valid voltage level and use a custom delay to drive an enable signal to peripheral control logic.

Testing Considerations

  • Programming
  • Unit testing
  • TAG Connect footprint
  • Digi-Key can program Atmel in advance