AS4SD4M16 데이터 시트보기 (PDF) - Austin Semiconductor

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AS4SD4M16

4 Meg x 16 SDRAM Synchronous DRAM Memory

Austin Semiconductor 

Austin Semiconductor, Inc.

SDRAM

AS4SD4M16

FUNCTIONAL BLOCK DIAGRAM

4 Meg x 16 SDRAM

CKE

CLK

CS\

WE\

CAS\

RAS\

CONTROL

LOGIC

BANK2 BANK3

BANK1

MODE REGISTER

112

2

REFRESH 12

COUNTER

12

ROW 12

ADDRESS

MUX

BANK0

ROW-

ADDRESS

LATCH &

DECODER 4096

BANK 0

MEMORY

ARRAY

(4,096 X 256 X 16)

SENSE AMPLIFIERS

A0,

A10,

BA

14 ADDRESS

REGISTER

2

2

BANK

CONTROL

LOGIC

COLUMN-

ADDRESS

8

8

COUNTER/

LATCH

I/O GATING

DQM MASK LOGIC

READ DATA LATCH

WRITE DRIVERS

256

(X16)

COLUMN

DECODER

2

2

DATA

16 OUTPUT

REGISTER

16

DATA

16 INPUT

REGISTER

DQML, DQMH

DQ0-DQ15

AS4SD4M16

Rev. 1.5 10/01

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

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