IS41C8205-50JI Просмотр технического описания (PDF) - Integrated Silicon Solution

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IS41C8205-50JI

2M x 8 (16-MBIT) DYNAMIC RAM WITH FAST PAGE MODE

Integrated Silicon Solution 

IS41C8205

IS41LV8205

FUNCTIONAL BLOCK DIAGRAM

OE

WE

CAS

CAS

CONTROL

LOGIC

CAS

RAS

RAS

RAS

CLOCK

GENERATOR

REFRESH

COUNTER

ISSI ®

WE

CONTROL

LOGIC

WE

OE

CONTROL

LOGIC

OE

DATA I/O BUS

COLUMN DECODER

SENSE AMPLIFIERS

I/O0-I/O7

A0-A10

ADDRESS

BUFFERS

MEMORY ARRAY

2,097,152 x 8

TRUTH TABLE

Function

Standby

Read

Write: Word (Early Write)

Read-Write

Hidden Refresh Read

Write(1)

RAS-Only Refresh

CBR Refresh

Note:

1. EARLY WRITE only.

RAS

H

L

L

L

L→H→L

L→H→L

L

H→L

CAS

H

L

L

L

L

L

H

L

WE

X

H

L

H→L

H

L

X

X

OE

X

L

X

L→H

L

X

X

X

Address tR/tC

X

ROW/COL

ROW/COL

ROW/COL

ROW/COL

ROW/COL

ROW/NA

X

I/O

High-Z

DOUT

DIN

DOUT, DIN

DOUT

DOUT

High-Z

High-Z

2

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

Rev. B

06/24/01

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