ATAES132-TH-EQ Atmel, ATAES132-TH-EQ Datasheet - Page 120

• 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

I.31.
I.32.
I.33.
I.34.
I.35.
I.36.
Nonce Command
If the random nonce option is selected, then the internal random nonce is generated using the following function:
AES is executed in ECB mode with an input value of A and a key of B. The output of the AES crypto engine is XOR’d with
Block A and the first 12 bytes of the result are stored in the internal nonce register.
If the LockConfig register is unlocked (0x55), then the random number generator is latched in the test mode and the nonce
command will generate non-random values. If the LockConfig register is locked (0x00), then the random number generator
generates random numbers and the Nonce command functions normally.
NonceCompute Command
The random nonce is generated using the following function:
AES is executed in ECB mode with an input value of A and a key of B. The output of the AES crypto engine is XOR’d with
Block A and the first 12 bytes of the result are stored in the internal nonce register.
Random Command
Generates a random number using the internal high quality random number generator and the random number generation
procedure recommended by NIST in SP800-90 (see Appendix A).
Reset Command
The reset command does not perform a cryptographic operation and does not use or generate a MAC.
Sleep Command
The sleep command does not perform a cryptographic operation and does not use or generate a MAC.
TempSense Command
The TempSense command does not perform a cryptographic operation and does not use or generate a MAC.
Block A is:
Block B is:
Block A is:
Block B is:
1 byte
1 byte
2 bytes
12 bytes
2 bytes
2 bytes
12 bytes
1 byte
1 byte
2 bytes
12 bytes
2 bytes
2 bytes
12 bytes
Nonce Opcode (0x01)
Mode
0x00
Input Seed
ManufacturingID
0x00
Internally generated random number
Nonce Opcode (0x01)
Mode
0x00
Nonce Register
ManufacturingID
0x00
Random Seed
Atmel ATAES132 Preliminary Datasheet
8760A−CRYPTO−5/11
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