AT88SC25616C-PU

Specialized ICS Overview

The AT88SC25616C-PU 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 both asynchronous ISO 7816-3 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 monitors. The component is housed in an 8-PDIP package suitable for through-hole mounting.

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: Asynchronous ISO 7816-3 T=0 protocol and Synchronous 2-wire serial interface
• Configuration zone with 37-byte OTP area and 160-byte storage for keys and passwords

Specialized ICS Applications

• Smart card applications requiring ISO 7816-3 compatibility
• Embedded systems needing secure nonvolatile storage for sensitive information
• Multi-application devices utilizing multiple zones and key sets
• Systems requiring dynamic symmetric mutual authentication between host and device

Specialized ICS Procurement Notes

Verify that the specific order code corresponds to the industrial temperature range (-40°C to +85°C) and the 8-PDIP package type. Confirm compliance with RoHS standards as indicated by the 'Green compliant' designation in the ordering information. Ensure that the supply voltage provided matches the 2.7V to 5.5V operational range specified in the datasheet.

Specialized ICS Selection Notes

Select this component when a combination of substantial EEPROM capacity and high-level hardware security is required. The choice between asynchronous and synchronous modes depends on the host system's interface capabilities; the synchronous mode offers faster initialization for embedded controllers, while the asynchronous mode ensures compatibility with standard smart card readers. Consider the need for anti-tearing protection if power loss during write cycles is a concern.

Specialized ICS Part Context

This part belongs to the CryptoMemory series, which includes devices ranging from 1-Kbit to 256-Kbit capacities. The AT88SC25616C represents the highest density option in this specific family line, offering the most extensive user memory space among its peers. It shares the same pinout and basic interface characteristics as smaller variants in the series, facilitating design scalability across different security requirements.

Specialized ICS Replacement Considerations

Devices such as AT88SC12816C or AT88SC6416C offer similar security features but with reduced memory capacities. When substituting, verify that the lower capacity meets the application's storage needs and that the configuration memory structure remains compatible with existing software implementations.