Overview

The X28HC256 is a second generation high performance CMOS 32k x 8 EEPROM. It is fabricated with Intersil’s proprietary, textured poly floating gate technology, providing a highly reliable 5V only nonvolatile memory. The X28HC256 supports a 128-byte page write operation, effectively providing a 24μs/byte write cycle, and enabling the entire memory to be typically rewritten in less than 0. 8s. The X28HC256 also features DATA polling and Toggle bit polling, two methods of providing early end of write detection. The X28HC256 also supports the JEDEC standard software data protection feature for protecting against inadvertent writes during power-up and power-down. Endurance for the X28HC256 is specified as a minimum 100, 000 write cycles per byte and an inherent data retention of 100 years

  • Access time: 90ns
  • Simple byte and page write
  • Single 5V supply
  • No external high voltages or VP-P control circuits
  • Self timed
  • No erase before write
  • No complex programming algorithms
  • No overerase problem
  • Low power CMOS
  • Active: 60mA
  • Standby: 500μA
  • Software data protection
  • Protects data against system level inadvertent writes
  • High-Speed page write capability
  • Highly reliable Direct Write™ cell
  • Endurance: 100,000 cycles
  • Data retention: 100 years
  • Early end of write detection
  • DATA polling
  • Toggle bit polling
  • RoHS compliant

Documentation

Title Type Date
PDF867 KB
Datasheet
PDF711 KB日本語
Related Files: Sample Code
Application Note
PDF736 KB日本語
Related Files: Sample Code
Application Note
PDF802 KB日本語
Related Files: Sample Code
Application Note
PDF688 KB日本語
Related Files: Sample Code
Application Note
PDF1.79 MB日本語
Related Files: Sample Code
Application Note
PDF1.15 MB日本語
Related Files: Sample Code
Application Note
PDF1.36 MB日本語
Related Files: Sample Code
Application Note
PDF241 KB日本語
Related Files: Sample Code
Application Note
PDF257 KB日本語
Related Files: Sample Code, RX62Nグループ RSPI を使ったクロック同期式シングルマスタ制御ソフトウェア
Application Note
PDF252 KB日本語
Related Files: Sample Code
Application Note
PDF202 KB日本語
Related Files: Sample Code
Application Note
PDF147 KB
Related Files: Serial EEPROM HN58X25xxx Series Sample Program M16C(SI/O)
Application Note
PDF228 KB
Related Files: Serial EEPROM HN58X25xxx Series Sample Program M16C(UART)
Application Note
PDF189 KB
Application Note
PDF1.32 MB
Brochure
PDF603 KB
End Of Life Notice
PDF1.17 MB
End Of Life Notice
PDF345 KB
End Of Life Notice
PDF233 KB
End Of Life Notice
PDF320 KB
End Of Life Notice
PDF228 KB日本語
Guide
PDF1.38 MB日本語
Overview
PDF227 KB
Price Increase Notice
PDF4.86 MB日本語
Product Change Notice
PDF3.74 MB日本語
Product Change Notice
PDF1.46 MB日本語
Product Change Notice
PDF233 KB
Product Change Notice
PDF86 KB
Product Change Notice
PDF38 KB
Product Change Notice
PDF67 KB
Product Change Notice
PDF33 KB日本語
Technical Update
PDF403 KB日本語
Technical Update
PDF21 KB日本語
Technical Update
PDF446 KB
Technical Update

Design & Development

Software Downloads

Title Type Date
PDF603 KB
End Of Life Notice
PDF1.17 MB
End Of Life Notice
PDF345 KB
End Of Life Notice
PDF233 KB
End Of Life Notice
PDF320 KB
End Of Life Notice

Support