ATAES132A-SHER-T

The Microchip Technology ATAES132A-SHER-T is a high-security, Serial Electrically-Erasable and Programmable Read-Only Memory (EEPROM) offering both authentication and confidential nonvolatile data storage. It provides 32Kb of standard serial EEPROM memory, compatible with Atmel AT24C32D and AT25320B, divided into 16 user zones of 2Kb each.

Key security features include an AES algorithm with 128-bit keys, AES-CCM for authentication, Message Authentication Code (MAC) capability, and secure storage for up to sixteen 128-bit keys. The device supports encrypted user memory read and write operations, an internal FIPS Random Number Generator (RNG), and 16 high-endurance monotonic EEPROM counters. User zone access rights are independently configurable, allowing for authentication prior to zone access, with options for read/write, encrypted, or read-only user zones.

Connectivity is provided via a high-speed serial interface supporting 10MHz SPI (Mode 0 and 3) and a 1MHz standard I2C interface. The device operates within a 2.5V to 5.5V supply voltage range and consumes less than 250nA in sleep mode. It is available in an 8-lead SOIC package and operates across a temperature range of -40°C to +85°C.

This component is designed to easily add security by replacing existing serial EEPROMs, enabling authentication of consumables, components, and network access. It helps protect sensitive firmware, securely store sensitive data, prevent contract manufacturers from overbuilding, manage warranty claims, and securely store identity data.