ATAES132A-MAHER-S

Specialized ICS Overview

The ATAES132A-MAHER-S is a high-security serial EEPROM from Microchip's CryptoAuthentication family, featuring 32 kb of nonvolatile memory organized into 16 user zones. It integrates an AES-128 cryptographic engine operating in CCM mode for authentication and data confidentiality. The device supports both 1 MHz I²C and 10 MHz SPI interfaces within a 2.5 V to 5.5 V supply range. Key hardware features include secure storage for sixteen 128-bit keys, a FIPS-compliant random number generator, and monotonic counters. It is housed in an 8-pad UDFN package with exposed pad.

Specialized ICS Feature Summary

• 32 kb Serial EEPROM with 16 independently configurable 2 kb user zones
• AES-128 cryptographic engine supporting CCM mode for authentication and encryption
• Hardware-based key storage for up to sixteen 128-bit keys
• Dual interface support: 1 MHz I²C and 10 MHz SPI (Modes 0 and 3)
• Integrated FIPS Random Number Generator (RNG) and 16 monotonic counters

Specialized ICS Applications

• Replacing standard serial EEPROMs to add security to existing systems
• Authenticating consumables, components, and network access points
• Securely storing sensitive firmware and identity data
• Preventing unauthorized overbuilding by contract manufacturers

Specialized ICS Procurement Notes

Verify the ordering suffix 'MAHER-S' against official Microchip documentation to confirm specific packaging details such as tape and reel specifications or temperature grade variations. Ensure compatibility with the 8-UDFN (2x3) footprint during procurement planning.

Specialized ICS Selection Notes

Select this component when a drop-in replacement for standard 32-kbit EEPROMs is required alongside hardware-level security. It is suitable for applications needing encrypted data storage, mutual authentication via AES-CCM, and protection against physical attacks on stored secrets.

Specialized ICS Part Context

This part belongs to the ATAES132A series, designed to provide authentication and confidential nonvolatile data storage. It serves as a direct pin-compatible alternative to industry-standard serial EEPROMs like the AT24C32D, enabling easy integration of security features into legacy designs without PCB redesign.

Specialized ICS Replacement Considerations

The datasheet confirms compatibility with Microchip AT24C32D and AT25320B footprints. Verify that the host system can handle the extended command set required for cryptographic operations if replacing a standard EEPROM.