HN27C256HG View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

Manufacturer

HN27C256HG

32768-word × 8-bit CMOS UV Erasable and Programmable ROM

Hitachi -> Renesas Electronics 

HN27C256HG Series

32768-word × 8-bit CMOS UV Erasable and Programmable ROM

Maintenance only

Description

The Hitachi HN27C256HG is a 256-kbit ultraviolet erasable and electrically programmable ROM, featuring

sub-100-ns access times. The HN27C256HG realizes access time of 70 ns and 85 ns, employing the

advanced fine process and high speed circuitry technique. The timing conditions such as access time or

output hold time are designed as same as our byte-wide SRAMs’, allowing to use with SRAMs on the same

memory board by the same read timings. So its board design in 16-bit microprocessor systems is easy. Also,

the HN27C256HG realizes faster programming time than our conventional 256-kbit EPROM by Hitachi’s

Fast High-Reliability Programming Algorithm. Pin arrangement, pin configuration and programming voltage

are compatible with our 256-kbit EPROM series, therefore existing programmers can be used with the

HN27C256HG.

Features

• High speed: Access time 70/85 ns (max)

• Low power dissipation

Active mode: 30 mW (typ) (f = 1 MHz)

• High reliability and fast programming

Programming voltage: +12.5 V DC

Fast High-Reliability Programming Algorithm available

• Device identifier mode

Manufacturer code and device code

Ordering Information

Type No.

HN27C256HG-70

HN27C256HG-85

Access Time

70 ns

85 ns

Package

600-mil 28-pin cerdip (DG-28)

Note: This device is not available for new application.

Share Link: