IS41C44002C datasheet(2/19 Pages) ISSI

Part #	IS41C44002C

Description	16Mb DRAM WITH EDO PAGE MODE

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Manufacturer	ISSI [Integrated Silicon Solution, Inc]

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Integrated Silicon Solution, Inc. — 1-800-379-4774

Rev. 00B

08/09/2010

IS41C44002C

IS41LV44002C

FUNCTIONAL BLOCK DIAGRAM

OE

WE

CAS

WE

DATA I/O BUS

COLUMN DECODERS

SENSE AMPLIFIERS

MEMORY ARRAY

4,194,304 x 4

CAS

CONTROL

LOGIC

WE

CONTROL

LOGICS

OE

CONTROL

LOGIC

I/O0-I/O3

RAS

A0-A10

RAS

CLOCK

GENERATOR

REFRESH

COUNTER

ADDRESS

BUFFERS

TRUTH TABLE

Function

RAS

CAS

WE

OE

Address tR/tC

I/O

Standby

H

X

High-Z

Read

L

H

L

ROW/COL

Dout

Write:Word(EarlyWrite)

L

X

ROW/COL

Din

Read-Write

L

H→L

L→H

ROW/COL

Dout,Din

EDOPage-ModeRead

1stCycle:

L

H→L

H

L

ROW/COL

Dout

2ndCycle:

L

H→L

H

L

NA/COL

Dout

EDOPage-ModeWrite

1stCycle:

L

H→L

L

X

ROW/COL

Din

2ndCycle:

L

H→L

L

X

NA/COL

Din

EDOPage-Mode

1stCycle:

L

H→L

L→H

ROW/COL

Dout,Din

Read-Write

2ndCycle:

L

H→L

L→H

NA/COL

Dout,Din

HiddenRefresh

Read

L→H→L

L

H

L

ROW/COL

Dout

Write(1)

L→H→L

L

X

ROW/COL

Dout

RAS

-OnlyRefresh

L

H

X

ROW/NA

High-Z

CBRRefresh

H→L

L

X

High-Z

Note:

1. EARLYWRITEonly.

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