ATAES132-MA3H-ER-T Atmel, ATAES132-MA3H-ER-T Datasheet - Page 18
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ATAES132-MA3H-ER-T
Manufacturer Part Number
ATAES132-MA3H-ER-T
Description
EEPROM AES 32Kbit (MA3) I2C
Manufacturer
Atmel
Datasheet
1.ATAES132-SH-EQ.pdf
(166 pages)
Specifications of ATAES132-MA3H-ER-T
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
UDFN-8
Interface Type
I2C
Factory Pack Quantity
5000
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Notes:
KeyConfig Field
TransferOK
AuthCompute
LinkPointer
CounterNum
Reserved
1.
2.
3.
4. 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:
protect the customer secrets. See Section 7.19 for the lock command.
Warning:
be run 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
The Atmel ATAES132 must always be locked by the customer prior to shipment to the end user to
Since the encrypt command does not include an input MAC, the encrypt command can exhaustively
1
1
2
2
3
0 to 3
4 to 7
0 to 7
Bit
6
7
Description
If 1b, then this key is permitted to be the target of a KeyTransfer command
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 monotonic counter attached to this key for usage limits or for
MAC calculation. MAC calculations will include the counter if command mode bit 5 is
1b even if key usage limits are disabled.
Reserved for future use. All bits must be 0b.
(See Section 7.17)
Atmel ATAES132 Preliminary Datasheet
8760A−CRYPTO−5/11
18
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