HN58V257AT-12 datasheet(3/24 Pages) HITACHI

Part #	HN58V257AT-12

Description	256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function (HN58V257A)

Download	24 Pages

Scroll/Zoom	100%

Manufacturer	HITACHI [Hitachi Semiconductor]

Direct Link	http://www.renesas.com/eng

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3 / 24 page

HN58V256A Series, HN58V257A Series

3

Pin Description

Pin name

Function

A0 to A14

Address input

I/O0 to I/O7

Data input/output

OE

Output enable

CE

Chip enable

WE

Write enable

V

CC

Power supply

V

SS

Ground

RDY/

Busy*

1

Ready busy

RES*

1

Reset

NC

No connection

Note:

1. This function is supported by only the HN58V257A series.

Block Diagram

Note: 1. This function is supported by only the HN58V257A series.

V

OE

CE

A5

A0

A6

A14

WE

CC

SS

I/O0

I/O7

High voltage generator

Control logic and timing

Y decoder

X decoder

Address

buffer and

latch

I/O buffer

and

input latch

Y gating

Memory array

Data latch

RES

RDY/

Busy

RES

*1

to

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HN58V257AT-12 Datasheet(PDF) 3 Page - Hitachi Semiconductor

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