11.3.1.3 User Row

The User Row is 64 bytes of Read-While-Write (RWW) Flash. Use this section to store various data, such as calibration/configuration data and serial numbers. This section is not erased by a chip erase.

The User Row section can be read or written from the CPU. When erasing the User Row, the entire row is erased at once.

This section can be written through UPDI on a locked device.

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