Texas Instruments /CC26x0 /CRYPTO /KEYWRITTENAREA

Key Written Area Status This register shows which areas of the key store RAM contain valid written keys. When a new key needs to be written to the key store, on a location that is already occupied by a valid key, this key area must be cleared first. This can be done by writing this register before the new key is written to the key store memory. Attempting to write to a key area that already contains a valid key is not allowed and will result in an error.