ATAES132-TH-EQ Atmel, ATAES132-TH-EQ Datasheet - Page 91

• Manufacturer Part Number: ATAES132-TH-EQ
• Description: EEPROM AES 32Kbit EE SPI
• Manufacturer: Atmel

Specifications of ATAES132-TH-EQ

• Rohs: yes
• Maximum Clock Frequency: 10 MHz
• Operating Supply Voltage: 6 V
• Maximum Operating Temperature: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-8
• Interface Type: SPI
• Factory Pack Quantity: 2300

E.2.22. ZoneConfig Registers
Notes:
The 16 ZoneConfig registers are used to individually configure the 16 user zones. Each ZoneConfig register controls one user
zone. ZoneConfig 00 controls user zone 00, ZoneConfig 01 controls User Zone 01, etc.
Each ZoneConfig register is a four byte array which is stored as shown in Table E-12. The customer can write the ZoneConfig
registers with the standard I
register definition in Section E.2.11).
Table E-19. Partial configuration memory map showing ZoneConfig register byte locations for the two registers
CounterConfig Field
TransferOK
AuthCompute
LinkPointer
CounterNum
Reserved
Address
F0C0
h
-
1.
2.
3. A key can be disabled by setting KeyConfig[KeyN].AuthKey to 1b and KeyConfig[KeyN].LinkPointer to contain
Changes to the KeyConfig registers take effect immediately, which allows the functionality to be verified during
the personalization process.
Warning:
exhaustively ran with selected input data to attack the key. Requiring authentication prior to allowing encryption
makes these attacks more difficult. To require prior authentication, the AuthKey, and RandomNonce bits must be
set to 1b.
"KeyN", where KeyN = KeyID of the key being configured
Byte 0
0
h
Since the encrypt command does not include an input MAC, the encrypt command can be
Byte
1
1
2
2
3
2
C or SPI write commands unless the configuration memory has been locked (see the LockConfig
Byte 1
0 to 3
4 to 7
0 to 7
1
Bit
ZoneConfig 0
6
7
h
Description
If 1b, then this key is permitted to be the target of a KeyTransfer command. (See
If 0b, then the KeyTransfer command is prohibited
If 1b, then this key can be used with the AuthCompute command
If 0b, then the key cannot be used with the AuthCompute command
For child keys, stores the ParentKeyID
For all other keys, the KeyID of the authorizing key (see AuthKey)
Stores the CntID of the counter attached to this key for usage limits and/or for
Reserved for future use. All bits must be 0b
Byte 2
Section 7.17)
MAC calculation. MAC calculations will include the counter if command
mode bit five is 1b even if key usage limits are disabled
2
h
Byte 3
3
h
Atmel ATAES132 Preliminary Datasheet
Byte 0
4
h
Byte 1
5
ZoneConfig 1
h
Byte 2
8760A−CRYPTO−5/11
6
h
Byte 3
7
h
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