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Product Change NoticeMicrochip

Microchip Suggested Replacements for EOL AT27C and SST39SF Memory Devices

A list of recommended replacement parts for End-of-Life (EOL) Microchip AT27C EPROM and SST39SF Flash memory components.

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Overview

This document identifies recommended replacement part numbers for discontinued Microchip memory devices under PCN CAAN-08FCZP770. It lists specific End-of-Life (EOL) Catalog Part Numbers (CPNs) for the AT27C and SST39SF product families, primarily transitioning from PDIP (PU/PHE) packages to PLCC (JU/NHE) packages. The notice covers memory densities ranging from 1Mb to 8Mb for EPROMs and 1Mb to 4Mb for Multi-Purpose Flash devices.

Use Cases

  • End-of-life (EOL) component management
  • Identifying surface-mount alternatives for through-hole memory parts
  • Legacy hardware maintenance and repair
  • Product redesign due to component obsolescence

Topics

Microchip
PCN
EOL
AT27C010
AT27C020
AT27C040
AT27C080
SST39SF010A
SST39SF020A
SST39SF040
EPROM
Flash Memory

Referenced Parts