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HN27C256G-30, HN27C256HC-70, HN27C256HG

Table of contents:
Info of HN27C256G-30
Info of HN27C256HC-70
Info of HN27C256HG

HN27C256G-30, HN27C256HC-70, HN27C256HG Selling Leads, Datasheet

MFG:HIT Package Cooled:DIP-28 D/C:88+

HN27C256G-30, HN27C256HC-70, HN27C256HG Picture

HN27C256G-30, HN27C256HC-70, HN27C256HG Datasheet download

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Part Number: HN27C256G-30

MFG: HIT

Package Cooled: DIP-28

D/C: 88+

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HN27C256HG General 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.

HN27C256HG Maximum Ratings

Parameter	Symbol	Value	Unit
All input and output voltages^*1	V_in, V_out	0.6^*2 to +7.0	V
A9 input voltage^*1	V_ID	0.6^*2 to + 13.5	V
V_PP voltage^*1	V_PP	0.6 to +13.5	V
V_CCvoltage^*1	V_CC	0.6 to + 7.0	V
Operating temperature range	T_opr	0 to +70	°C
Storage temperature range	T_stg	55 to +125	°C
Storage temperature range under bias	T_bias	10 to +80	°C

Notes: 1. Relative to V_SS
2. Vin, Vout and V_ID min = 1.0 V for pulse width 50 ns

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

HN27C256HG Connection Diagram

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