3.2 ATSHA206A Data and OTP Zones

  • Slots 0-6, 11-14 have been eliminated.
  • Slot 7 has been renamed DerivedKey and is configured for key storage. It is the target of the DeriveKey command.
  • Slots 8-10 have been renamed DataStore. Slots 0, 1 and 2 are set for clear text writes and can be written after the Data zone is locked.
  • Slots 9-10 (DataStore Slots 1 and 2) can be individually locked via the Write command when Write.Mode[5] = 1. This was not available for the SHA204A.
  • Slot 15 is configured as the ParentKey slot to hold the Secret Key.
  • The OTP zone has been eliminated.