ATSAMD5

The Microchip (formerly Atmel) ATSAMD5 and ATSAME5 series are microcontrollers based on the ARM Cortex-M4 core.

Flash Banks

Flash Bank	Base address	Size	J-Link Support
Internal Flash	0x00000000	Up to 1024 KB
NVM User Row	0x00800000	512 Bytes
External QSPI Flash	0x01000000	Up to 16 MB

Watchdog Handling

The device has a watchdog that is fed during flash programming.

Device Specific Handling

Reset

The device uses Cortex-M reset, no special handling necessary, like described here.

Reset extension phase

When nRESET is released and the SWCLK/TCK pin is low, the MCU enters the so-called "Reset extension phase". In this phase the CPU does not execute any code.

Troubleshooting

When manually toggling the reset pin (e.g. in a production test), it is necessary to pull the SWCLK/TCK pin up, before releasing nRESET: This ensures that the reset behaves as expected.

Evaluation Boards

• SAMD51 Xplained Pro
• SAME54 Xplained Pro

Example Applications

• SAMD51 Hello World
• SAME54 Hello World