This document provides detailed information on the AT24C32A, a 2KB EEPROM manufactured by Microchip. It features multiple security features, including a 64-bit mutual authentication protocol, cryptographic message authentication codes, and stream encryption. It also supports ISO 7816 Class B (3V) operation and ISO 7816-3 Asynchronous T=0 protocol. In addition, it has low voltage supply, secure nonvolatile storage, and 2-wire serial interface.
The AT88SC0204CA is a secure memory device from Atmel’s CryptoMemory family. It offers 2 Kbit (256‑byte) EEPROM organized into four 64‑byte zones with programmable access rights, mutual authentication, MAC, and stream encryption.
The device operates from 2.7 V to 3.6 V, supports ISO 7816 smart‑card protocols, and includes extensive protection features such as ESD resistance, anti‑tearing, and temperature monitoring. Detailed electrical characteristics, pin descriptions, and timing diagrams are provided for both asynchronous and synchronous modes.
| User Memory | 2 Kbit (256‑byte) EEPROM |
|---|---|
| Data Retention | 10 years |
| Endurance | 100,000 write cycles |
| ESD Protection | 2,000 V min |
It provides 2 Kbit (256 byte) EEPROM organized in four zones.
The device is rated for 100,000 write cycles.