ATAES132-SH-ER Atmel, ATAES132-SH-ER Datasheet - Page 5

• 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

1.
1.1.
1.2.
Introduction
The Atmel
(AES) cryptographic algorithm to add authentication capability to a standard Serial EEPROM. The ATAES132 provides
32Kbits of EEPROM user data memory, sixteen 128 bit key registers, sixteen non-reversible monotonic counters, factory
unique die identification numbers, and a configuration memory. The configuration memory registers control access to the
user memory, as well as the restrictions on key and counter functionality.
The user memory can be accessed directly with the standard SPI or I
read-only access. If the user zone security is activated, then the extended ATAES132 command set is used to access the
contents of a user zone. The extended ATAES132 commands are executed by writing the command packet to the virtual
memory using standard SPI or I
using standard SPI or I
The ATAES132 packages are compatible with the standard SPI and I
inserted into many existing Serial EEPROM applications.
Scope
This ATAES132 Specification provides all specifications for its configuration and operation.
Conventions
The following nomenclature is used throughout this specification.
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Host (The SPI or I
Client (The ATAES132 Secure Serial EEPROM defined by this specification)
Nnb (Binary number)
0xZZZZ (Hexadecimal number)
ZZZZ
RegName.FieldName (Field name)
RegArray[xx].FieldName (Field name)
UZ (User zone)
CntID (Counter ID)
KeyID (Key ID)
The host initiates all communications with slave devices on the serial interface bus
Operates as a SPI or I
Denotes a binary number "nn" (Most significant bit on the left)
Denotes a hex number "ZZZZ" (Most significant bit on the left)
Denotes a hex number "ZZZZ" (Most Significant Bit on the left)
Reference to bit field "FieldName" in register "RegName"
Reference to bit field "FieldName" in register "RegArray[xx]" where "xx" is the array index
Reference to a user zone number
Reference to a counter number
References to a key register number
®
ATAES132 is the first device in a family of high security Serial EEPROM using the advanced encryption standard
h
(Hexadecimal number)
2
C read commands.
2
C master device)
2
C slave
2
C write commands. The response packet is retrieved by reading it from the virtual memory
2
2
C commands if a user zone is configured for open or
C EEPROM footprints. This allows the ATAES132 to be
Atmel ATAES132 Preliminary Datasheet
8760A−CRYPTO−5/11
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