5.2 Chip Erase at Low Voltage
This kit supports variable voltage from 1.8-5.1V. When a chip erase of the ATtiny1607 is started, the BOD is enabled and uses the BODLEVEL set in the FUSE.BODCFG fuse byte. If the BODLEVEL is set higher than the selected target voltage on the kit, chip erase will fail.
Info:
BODLEVEL0 in the ATtiny1607 has a maximum trigger voltage
of 2.0V, which means that chip erase is likely to fail if the kit voltage is set to
1.8V.