AT88SC25616C-SU

Specialized ICS Overview

The AT88SC25616C-SU is a secure memory IC from the CryptoMemory family, manufactured by Microchip Technology. It provides 256 Kbit (32 Kbyte) of EEPROM user memory organized into sixteen 2-Kbyte zones. The device integrates hardware cryptographic features including a 64-bit mutual authentication protocol, encrypted checksums, and stream encryption. It supports ISO 7816-3 asynchronous T=0 smart card protocols and synchronous 2-wire serial interfaces. Operating within a voltage range of 2.7V to 5.5V, it ensures data integrity through anti-tearing functions and voltage/frequency monitoring. The component is housed in an 8-lead SOIC package.

Specialized ICS Feature Summary

• 256-Kbit EEPROM User Memory divided into sixteen independently configurable 2-Kbyte zones
• Hardware security engine supporting 64-bit mutual authentication, encrypted checksums, and stream encryption
• Dual interface capability: ISO 7816-3 asynchronous T=0 protocol for smart cards and 2-wire serial interface for embedded systems
• Configuration zone with programmable access rights, four key sets, and eight password sets

Specialized ICS Applications

• Smart card modules requiring ISO 7816 compliance
• Secure storage for sensitive system or user information in embedded devices
• Authentication and encryption for data files in multi-application environments

Specialized ICS Procurement Notes

Verify that the ordering suffix 'SU' corresponds to the 8-lead SOIC package and industrial temperature range (-40°C to +85°C). Confirm RoHS compliance status as specified in the manufacturer's documentation. Ensure compatibility with existing 2-wire serial EEPROM pinouts if used in embedded designs.

Specialized ICS Selection Notes

Select this model when 256 Kbit of secure storage is required with support for both smart card and standard serial interfaces. The 8-lead SOIC package is suitable for surface mount applications. Consider the 16-zone architecture for complex multi-file data management. Verify power supply stability between 2.7V and 5.5V to ensure proper operation of the internal cryptographic engine.

Specialized ICS Part Context

The AT88SC25616C belongs to the CryptoMemory series, which serves as a precursor to the CryptoAuthentication product line. Originally developed by Atmel Corporation before its acquisition by Microchip Technology, this family focuses on high-security nonvolatile memory solutions. The device replaces older plaintext transmission models with advanced mutual authentication and encrypted data transfer capabilities.

Specialized ICS Replacement Considerations

Devices within the same CryptoMemory family, such as the AT88SC0104C through AT88SC6416C, offer similar security features but with varying memory capacities. Pinout compatibility exists with standard 2-wire serial EEPROMs, facilitating potential integration swaps in embedded designs where specific capacity requirements differ.