AT88SC0404C-PU

Specialized ICS Overview

The AT88SC0404C-PU is a secure memory device from the CryptoMemory family, providing 4-Kbit (512-byte) EEPROM user storage. It features four independent 128-byte zones with programmable access rights and a 2-Kbit configuration zone for security parameters. The chip supports ISO 7816-3 asynchronous T=0 protocol and a synchronous 2-wire serial interface operating up to 1 MHz. Electrical specifications include a supply voltage range of 2.7V to 5.5V, standby current of 100 µA max, and read/write currents of 5 mA max. It offers high security through 64-bit mutual authentication, stream encryption, anti-tearing protection, and voltage/frequency monitoring.

Specialized ICS Feature Summary

• 4-Kbit EEPROM user memory divided into four 128-byte independently configurable zones
• Integrated hardware cryptographic engine supporting 64-bit mutual authentication and stream encryption
• Dual communication protocols: ISO 7816-3 asynchronous T=0 and synchronous 2-wire serial interface
• Anti-tearing function for data integrity during power loss and write lock capabilities

Specialized ICS Applications

• Smart card applications requiring ISO 7816 compatibility
• Embedded systems needing secure nonvolatile storage for sensitive information
• Device authentication and identity verification in industrial or consumer electronics

Specialized ICS Procurement Notes

Verify that the specific ordering suffix corresponds to the desired package type and temperature grade. The -PU suffix indicates an 8-lead PDIP package with industrial temperature rating (-40°C to +85°C). Confirm RoHS compliance status as specified in the latest manufacturer documentation before procurement.

Specialized ICS Selection Notes

Select this component when 4-Kbit capacity is sufficient and dual-mode interface support is required. Ensure the host system can handle either the asynchronous smart card protocol or the synchronous 2-wire interface based on the power-up sequence requirements. Verify that the 2.7V to 5.5V supply range matches the target application's voltage rails.

Specialized ICS Part Context

This part belongs to the AT88SC series of CryptoMemory devices manufactured by Microchip Technology (formerly Atmel). It shares architectural similarities with other members like the AT88SC0104C and AT88SC0808C but differs in memory density and zone configuration. The -PU designation specifically identifies the plastic dual inline package variant suitable for through-hole mounting.

Specialized ICS Replacement Considerations

Direct pin-compatible replacements within the same family include AT88SC0104C-PU (1-Kbit) and AT88SC0808C-PU (8-Kbit), provided memory capacity adjustments are acceptable. Other packages such as SOIC (SH) offer the same electrical characteristics with different form factors.