ATAES132-SH-ER Atmel, ATAES132-SH-ER Datasheet - Page 52

• Manufacturer Part Number: ATAES132-SH-ER
• Description: EEPROM AES 32Kbit EE I2C
• Manufacturer: Atmel

Specifications of ATAES132-SH-ER

• Rohs: yes
• Maximum Clock Frequency: 1 MHz
• Operating Supply Voltage: 6 V
• Maximum Operating Temperature: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8
• Interface Type: I2C
• Factory Pack Quantity: 2300

Table 7-50. Input parameters
Table 7-51. Output parameters
The command and response packet is transmitted as a block beginning with the count and ending with a packet checksum.
This block format is described in Section 6.1.
Opcode
Mode
Param1
Param2
Data1
Data2
Data3
Data4
Name
ReturnCode
Name
KeyImport
Mode
TargetKeyID
DKeyID
FirstBlock
SecondBlock
InMac
InData
(Bytes)
Size
1
Notes
Upon success, 0x00 will be returned. Any command execution or validation failure generates a
non-zero error code, per Section 6.3
(Bytes)
Size
16
16
16
1
1
2
2
6
Notes
0x19
Bit 0: If 1b, the key was encrypted with the KeyCompute command
Bits 1 to 4: Reserved. Must be 0b.
Bits 5 to 7: This value must match the mode bits 5, 6, and 7 value used when
Upper byte is always 0x00. Lower byte is the location where the decrypted
key will be stored. Legal values: 0x00 to 0x0F (standard keys), 0xFF (volatile
key).
Upper byte is always 0x00. If TargetKeyID = 0xFF, then lower byte is the
pointer to the decrypt key. Legal values: 0x00 to 0x0F. If TargetKeyID = 0x00
to 0x0F, then this field must be present, but is ignored (see above).
The value of this field must match the first authenticate-only block used when
executing the KeyCompute command or KeyExport command on the origin
device
The value of this field must match the second authenticate-only block used
when executing the KeyCompute command or KeyExport command on the
origin device. If Mode bits 5, 6, and 7 are 0b, then this field must be present,
but is ignored
MAC for the encrypted key
Input key (ciphertext) to be decrypted
If 0b, the key was encrypted with the KeyExport command
executing the KeyCompute command or KeyExport command on the
origin device
Atmel ATAES132 Preliminary Datasheet
8760A−CRYPTO−5/11
52