AS4LC4M4883C 查看數據表（PDF） - Austin Semiconductor

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AS4LC4M4883C

4 MEG x 4 DRAM 3.3V, EDO PAGE MODE

Austin Semiconductor 

AUSTIN SEMICONDUCTOR, INC.

AS4LC4M4 883C

4 MEG x 4 DRAM

WE

CAS

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

RAS

NO. 2 CLOCK

GENERATOR

COLUMN-

11

ADDRESS

BUFFER(11)

REFRESH

CONTROLLER

REFRESH

COUNTER

11

ROW-

11

ADDRESS

BUFFERS (11)

NO. 1 CLOCK

GENERATOR

FUNCTIONAL BLOCK DIAGRAM

DATA-IN

4

BUFFER

DATA-OUT

4

BUFFER

4

DQ1

DQ2

DQ3

DQ4

OE

10

COLUMN

DECODER

1

1024

4

SENSE AMPLIFIERS

I/O GATING

1024

2048

2048

4096 x 1024 x 4

2048

MEMORY

11

2048

2048

ARRAY

VDD

Vss

TRUTH TABLE

FUNCTION

Standby

READ

EARLY WRITE

READ WRITE

EDO-PAGE-MODE

READ

EDO-PAGE-MODE

EARLY-WRITE

EDO-PAGE-MODE

READ-WRITE

HIDDEN

REFRESH

?R?A/S-ONLY REFRESH

CBR REFRESH

1st Cycle

2nd Cycle

1st Cycle

2nd Cycle

Any Cycle

1st Cycle

2nd Cycle

READ

WRITE

?R?A/S

H

L

L

L

L

L

L

L

L

L

L

L>H>L

L>H>L

L

H>L

?C?A/S

H>X

L

L

L

H>L

H>L

H>L

H>L

L>H

H>L

H>L

L

L

H

L

?W/E

X

H

L

H>L

H

H

L

L

H

H>L

H>L

H

L

X

H

?O/E

X

L

X

L>H

L

L

X

X

L

L>H

L>H

L

X

X

X

ADDRESSES

tR

tC

X

X

ROW COL

ROW COL

ROW COL

ROW COL

n/a

COL

ROW COL

n/a

COL

n/a

n/a

ROW COL

n/a

COL

ROW COL

ROW COL

ROW

n/a

X

X

DATA-IN/OUT

DQ1-DQ4

High-Z

Data-Out

Data-In

Data-Out, Data-In

Data-Out

Data-Out

Data-In

Data-In

Data-Out

Data-Out, Data-In

Data-Out, Data-In

Data-Out

Data-In

High-Z

High-Z

AS4LC4M4

Rev. 11/97

DS000022

2-76

Austin Semiconductor, Inc., reserves the right to change products or specifications without notice.

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