ATAES132-MAH-ER-T

Specialized ICS Overview

The ATAES132-MAH-ER-T is a high-security authentication chip from the CryptoAuthentication™ series, manufactured by Microchip Technology. It integrates a hardware AES cryptographic engine supporting 128-bit keys and AES-CCM mode for data confidentiality and integrity. The device features 32Kb of user memory divided into 16 independently configurable zones, alongside secure storage for sixteen 128-bit keys. It communicates via a 1MHz I2C serial interface with a supply voltage range of 2.5V to 5.5V. Packaged in an 8-UDFN (2x3) format with an exposed pad, it operates within a temperature range of -40°C to +85°C.

Specialized ICS Feature Summary

• Hardware AES-128 cryptographic engine operating in CCM mode for encryption and MAC generation
• 32Kb nonvolatile user memory segmented into 16 individually configurable access zones
• Secure storage for sixteen 128-bit keys with write-only protection and customizable usage permissions
• 16 high-endurance monotonic counters for anti-replay protection and state tracking

Specialized ICS Applications

• Consumable authentication in printing and medical devices
• Component authentication for supply chain security
• Network access control and device identity management
• Protection of sensitive firmware and confidential data storage

Specialized ICS Procurement Notes

Verify that the specific ordering code matches the required package and tape/reel configuration. Confirm that the design phase accounts for the component being marked as not recommended for new designs, with ATAES132A as the designated replacement. Ensure compliance with the specified operating voltage and temperature ranges during procurement planning.

Specialized ICS Selection Notes

Select this component when existing Serial EEPROM footprints require security upgrades without PCB retooling. Verify that the host system supports the 1MHz I2C interface timing requirements. Consider the 8-UDFN package dimensions for layout constraints. Evaluate if the 16-zone memory structure meets the specific data segregation needs of the application.

Specialized ICS Part Context

This part belongs to the ATAES132 family, which serves as a secure drop-in replacement for standard Serial EEPROMs. It was originally developed by Atmel Corporation before its acquisition by Microchip Technology. The device provides a balance of high-security cryptographic functions and standard memory compatibility for legacy integration.

Specialized ICS Replacement Considerations

The datasheet explicitly states that the ATAES132 is not recommended for new designs and has been replaced by the ATAES132A. Engineers should evaluate the ATAES132A for new projects to ensure long-term availability and updated specifications.