HM62W16255HJP-12 データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HM62W16255HJP-12

4M high speed SRAM (256-kword x 16-bit), 12ns access time

Hitachi -> Renesas Electronics 

Pin Description

Pin name

A0 to A17

I/O1 to I/O16

CS

OE

WE

UB

LB

VCC

VSS

NC

Function

Address input

Data input/output

Chip select

Output enable

Write enable

Upper byte select

Lower byte select

Power supply

Ground

No connection

HM62W16255H Series

Block Diagram

(LSB) A1

A17

A7

A11

A16

A2

A6

(MSB)A5

I/O...1

I/O8

I/O...9

I/O16

WE

CS

LB

UB

OE

VCC

Memory matrix

VSS

Row

256 rows × 8 columns ×

decoder

128 blocks × 16 bit

(4,194,304 bits)

CS

Input

data

control

Column I/O

Column decoder

CS

A10 A8 A9 A12 A13 A14 A0 A15 A3 A4

CS

3

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