AT88SC0204CA-TU Atmel, AT88SC0204CA-TU Datasheet - Page 28

• Manufacturer Part Number: AT88SC0204CA-TU
• Manufacturer: Atmel

Specifications of AT88SC0204CA-TU

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Compliant

8.2.
8664C–CRYPT–01/10
Command Set
The command set of Atmel
CryptoMemory exceeds that of a simple memory device. Each instruction sent to the CryptoMemory must have
4-bytes: Command, Address 1, Address 2 and N. The last byte, N, defines the number of any additional data bytes to
be sent or received from the CryptoMemory device. In addition, the Random Read command is available. It is the only
one byte command but must be preceded by an aborted write command in order to set up the read address.
Table 17. CryptoMemory Synchronous Command Set
Write User Zone
Read Read
Read User Zone
System WRITE
System READ
Verify CRYPTO
Verify Password
Command Description
Normal
(Atmel AT88SC0104CA-AT88SC0808CA)
with Anti-Tearing (all devices)
Random Read
Normal Read
Write Config Zone
(Atmel AT88SC0104CA-AT88SC0808CA)
Write Fuses
Send Checksum
Set User Zone
Write Config Zone with Anti-Tearing
Set User Zone with Anti-Tearing
Read Conifg Zone
Read Fuse Byte
Read Checksum
Verify Authentication
Verify Encryption
Write Password
Read Password
®
CryptoMemory
Atmel AT88SC0104/0204/0404/0808/CA
®
is expanded compared to a Serial EEPROM as the functionality of
Command
$BA
$BA
$B0
$B0
$B1
$B2
$B4
$B4
$B4
$B4
$B4
$B4
$B6
$B6
$B6
$B8
$B8
Addr 1
addr
addr
addr
$0B
$0X
$1X
$0X
$0X
$00
$01
$02
$03
$08
$00
$01
$02
Details on command usage below
fuse ID
Addr 2
Addr
zone
zone
addr
addr
addr
addr
addr
$00
$00
$00
$00
$00
$00
$00
N ≤ $08 N-bytes
N ≤ $10 N-bytes
N ≤ $08 N-bytes
N ≤ $10 N-bytes
$00
$02
$00
$00
$01
$02
$10
$10
$03
$03
N
N
N
N-bytes
2-bytes
8-random bytes
+ 8-challenge bytes
X= key set (0-3)
8-random bytes
+ 8-challenge bytes
X= key set (0-3)
3-byte password
X=password set (0-7)
3-byte password
X=password set (0-7)
Data (N)
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