HN58C256A Series HN58C257A Series
256k EEPROM (32-kword × 8-bit) Ready/Busy and RES function (HN58C257A)
ADE-203-410D (Z) Rev.
4.
0 Oct.
24, 1997 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.
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, d...