AT88SA102S-TSU-T

Specialized ICS Overview

The AT88SA102S-TSU-T is a CryptoAuthentication™ family security IC designed for secure item authentication and key exchange. It implements the SHA-256 hash algorithm with a 256-bit key length to prevent exhaustive attacks. The device features a guaranteed unique 48-bit serial number and supports high-speed single-wire communication. Operating within a supply voltage range of 2.7V to 5.25V, it maintains less than 150nA sleep current. The component is housed in a 3-pin SOT-23 package and operates between -40°C and +85°C.

Specialized ICS Feature Summary

• Implements superior SHA-256 hash algorithm with 256-bit key length
• Guaranteed unique 48-bit serial number (ROM SN and Fuse SN)
• High-speed single-wire interface compatible with standard UART baud rates
• Multi-level hardware security including active shield and glitch protection

Specialized ICS Applications

• Authentication of replaceable items
• Software anti-piracy protection
• Network and computer access control
• Key exchange for encrypted downloads
• Physical access control systems

Specialized ICS Procurement Notes

This component is marked as Not Recommended for New Designs and has been replaced by the ATSHA204. Verify availability through restricted supply channels. Confirm that the specific SOT-23-3 tape and reel packaging meets project requirements before procurement.

Specialized ICS Selection Notes

Select this part only if existing designs require the specific AT88SA102S architecture or if migrating from legacy Atmel components. Ensure the host system supports the single-wire asynchronous pulse count protocol. Consider the ATSHA204 as the primary replacement for new development cycles.

Specialized ICS Part Context

The AT88SA102S belongs to the Microchip (formerly Atmel) CryptoAuthentication™ series. It serves as a cost-effective authentication chip providing secure identity verification without storing secrets on the host microprocessor. The device utilizes pre-programmed internal keys and user-personalizable fuses for diversified response generation.

Specialized ICS Replacement Considerations

The datasheet explicitly states the AT88SA102S is replaced by the ATSHA204. Evaluate the ATSHA204 for functional compatibility regarding SHA-256 authentication and single-wire interface support.