ATAES132A-SHER-B

The ATAES132A is a high-security, Serial Electrically-Erasable and Programmable Read-Only Memory (EEPROM) providing both authentication and confidential nonvolatile data storage capabilities. Access restrictions for the 16 user zones are independently configured, and any key can be used with any zone. In addition, keys can be used for standalone authentication. This flexibility permits the ATAES132A to be used in a wide range of applications. The AES-128 cryptographic engine operates in AES-CCM mode to provide authentication, stored data encryption/decryption, and Message Authentication Codes. Data encryption/decryption can be performed for internally stored data or for small external data packets, depending upon the configuration. Data encrypted by one ATAES132A device can be decrypted by another, and vice versa. The ATAES132A pinout is compatible with standard SPI and I²C Serial EEPROMs to allow placement on existing PC boards. The SPI and I²C instruction sets are identical to the Serial EEPROMs. The extended security functions are accessed by sending command packets to the ATAES132A using standard write instructions, and reading responses using standard read instructions. The ATAES132A secure Serial EEPROM architecture allows it to be inserted into existing applications. The ATAES132A device incorporates multiple physical security mechanisms to prevent the release of the internally stored secrets. Secure personalization features are provided to facilitate third-party product manufacturing.

• Crypto Element Device with Secure Hardware-based Key Storage
• 32Kb Standard Serial EEPROM Memory ?
  • Compatible with the AT24C32D and the AT25320B ?
  • 16 User Zones of 2Kb Each
• High-security Features ?
  • AES Algorithm with 128-bit Keys ?
  • AES-CCM for Authentication ?
  • Message Authentication Code (MAC) Capability ?
  • Guaranteed Unique Die Serial Number ?
  • Secure Storage for up to Sixteen 128-bit Keys ?
  • Encrypted User Memory Read and Write ?
  • Internal High-quality FIPS Random Number Generator (RNG) ?
  • 16 High-Endurance Monotonic EEPROM Counters
• Flexible User Configured Security ?
  • User Zone Access Rights Independently Configured ?
  • Authentication Prior to Zone Access
• Read/Write, Encrypted, or Read-only User Zone Options
• High-speed Serial Interface Options ?
  • 10MHz SPI (Mode 0 and 3) ?
  • 1MHz Stan