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HN58C257A Datasheet 256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function

Manufacturer: Hitachi Semiconductor (now Renesas)

Download the HN58C257A datasheet PDF. This datasheet also includes the HN58C256A variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (HN58C256A_HitachiSemiconductor.pdf) that lists specifications for multiple related part numbers.

General Description

The Hitachi HN58C256A and HN58C257A are electrically erasable and programmable ROMs organized as 32768-word × 8-bit.

They have realized high speed low power consumption and high reliability by employing advanced MNOS memory technology and CMOS process and circuitry technology.

They also have a 64-byte page programming function to make their write operations faster.

Overview

HN58C256A Series HN58C257A Series 256k EEPROM (32-kword × 8-bit) Ready/Busy and RES function (HN58C257A) ADE-203-410D (Z) Rev.

4.0 Oct.

Key Features

  • Single 5 V supply: 5 V ±10%.
  • Access time: 85 ns/100 ns (max).
  • Power dissipation  Active: 20 mW/MHz, (typ)  Standby: 110 µW (max).
  • On-chip latches: address, data, CE, OE, WE.
  • Automatic byte write: 10 ms max.
  • Automatic page write (64 bytes): 10 ms max.
  • Ready/Busy (only the HN58C257A series).
  • Data polling and Toggle bit.
  • Data protection circuit on power on/off.
  • Conforms to JEDEC byte-wide standard.

More Datasheets from Hitachi Semiconductor (now Renesas)

Part Number Description
HN58C256 EEPROM CMOS
HN58064 8192-Word x 8-Bit Electrically EPROM
HN58V257A 256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function
HN58V66A 64k EEPROM (8-kword x 8-bit) Ready/Busy function
HN58X2416I Two-wire serial interface 16k EEPROM (2-kword x 8-bit)
HN58X2432I Two-wire serial interface 32k EEPROM (4-kword x 8-bit)
HN58X2464I Two-wire serial interface 64k EEPROM (8-kword x 8-bit)