ATSHA204_14 Datasheet, PDF (42/80 Pages) ATMEL Corporation – Atmel CryptoAuthentication

8.6.3
Zone Encoding
The value in Param1 for both the Read command and the Write command controls which zone the command accesses.
See Section 2.1.4.1, “Configuration Zone Locking” to obtain more information on what controls the “locked” and
“unlocked” states for each zone. All other zone values are reserved, and should not be used.
Table 8-7. Zone Encoding (Param1)
Zone Param1
Name Value
Size
Read
Write
Config
0
704 bits
88 bytes
3 slots
Always available.
Partially, when unlocked.
Never when locked.
Never encrypted.
Never when unlocked. Always Not allowed when LockConfig is unlocked.
512 bits when locked, except in legacy All writeable when LockConfig is locked and
OTP
1
64 bytes mode. See Section 2.1.3, “One LockValue is unlocked.
2 slots Time Programmable (OTP)
Controlled by OTPmode when LockValue is locked.
Zone ”.
See Section 2.1.3.
Data
Not allowed when LockConfig is unlocked.
4096 bits Never when unlocked;
All writeable when LockConfig is locked and
2
512 bytes otherwise, controlled by IsSecret LockValue is unlocked.
16 slots and EncryptRead.
Controlled by WriteConfig when LockValue is locked.
See Section 2.1.4.
42 ATSHA204 [DATASHEET]
Atmel-8740H-CryptoAuth-ATSHA204-Datasheet_072014