AS4LC1M16883C 데이터 시트보기 (PDF) - Austin Semiconductor

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AS4LC1M16883C

1 MEG x 16 DRAM

Austin Semiconductor 

AUSTIN SEMICONDUCTOR, INC.

AS4LC1M16 883C

1 MEG x 16 DRAM

PRELIMINARY

TRUTH TABLE

FUNCTION

?R?A/S

Standby

H

READ: WORD

L

READ: LOWER BYTE

L

READ: UPPER BYTE

L

WRITE: WORD

L

(EARLY WRITE)

WRITE: LOWER

L

BYTE (EARLY)

WRITE: UPPER

L

BYTE (EARLY)

READ WRITE

L

EDO-PAGE-MODE 1st Cycle

L

READ

2nd Cycle L

Any Cycle L

EDO-PAGE-MODE 1st Cycle

L

WRITE

2nd Cycle L

EDO-PAGE-MODE 1st Cycle

L

READ-WRITE

2nd Cycle L

HIDDEN

READ

L>H>L

REFRESH

WRITE L>H>L

?R?A/S-ONLY REFRESH

L

CBR REFRESH

H>L

?C?A/S/L

H>X

L

L

?C?A/S/H

H>X

L

H

H

L

L

L

L

H

H

L

L

H>L

H>L

L>H

H>L

H>L

H>L

H>L

L

L

H

L

L

H>L

H>L

L>H

H>L

H>L

H>L

H>L

L

L

H

L

?W/E

X

H

H

H

L

L

L

H>L

H

H

H

L

L

H>L

H>L

H

L

X

H

ADDRESSES

?O/E

tR

tC

X

X

X

L ROW COL

L ROW COL

L ROW COL

X ROW COL

X ROW COL

X ROW COL

L>H

L

L

L

X

X

L>H

L>H

L

X

X

X

ROW

ROW

n/a

n/a

ROW

n/a

ROW

n/a

ROW

ROW

ROW

X

COL

COL

COL

n/a

COL

COL

COL

COL

COL

COL

n/a

X

DQs

High-Z

Data-Out

Lower Byte,

Upper Byte, Data-Out

Lower Byte, Data-Out

Upper Byte

Data-In

NOTES

Lower Byte, Data-In

Upper Byte, High-Z

Lower Byte, High-Z

Upper Byte, Data-In

Data-Out, Data-In 1, 2

Data-Out

2

Data-Out

2

Data-Out

2

Data-In

1

Data-In

1

Data-Out, Data-In 1, 2

Data-Out, Data-In 1, 2

Data-Out

2

Data-In

1, 3

High-Z

High-Z

4

NOTE:

1. These WRITE cycles may also be BYTE WRITE cycles (either ?C?A/S/L or ?C?A/S/H active).

2. These READ cycles may also be BYTE READ cycles (either ?C?A/S/L or ?C?A/S/H active).

3. EARLY WRITE only.

4. Only one ?C?A/S must be active (?C?A/S/L or ?C?A/S/H).

AS4LC1M16

REV. 3/97

DS000020

2-98

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

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