WED9LC6816V Ver la hoja de datos (PDF) - White Electronic Designs Corporation

Número de pieza

componentes Descripción

Fabricante

WED9LC6816V

256Kx32 SSRAM/4Mx32 SDRAM

White Electronic Designs Corporation 

White Electronic Designs

WED9LC6816V

FIG. 10 SDRAM PAGE WRITE CYCLE AT DIFFERENT BANK @

BURST LENGTH = 4

0

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16 17 18 19

SDCK

SDCE#

SDRAS#

SDCAS#

ADDR

RAa

CAa RBb

CBb

CAc

CBb

Note 2

BA0, 1

[A12,A13]

SDA10

RAa

DQ

RBb

tCDL

tRDL

DAa0 DAa1 DAa2 DAa3 DBb0 DBb1 DBb2 DBb3 DAc0 DAc1 DBd0 DBd1

SDWE#

BWE#

Row Active

(A-Bank)

Row Active

(A-Bank)

Write

(A-Bank)

Write

(B-Bank)

Note 1

Write

(A-Bank)

Write

(B-Bank)

Precharge

(Both Banks)

DON’T CARE

NOTES:

1. To interrupt burst write by Row precharge, BWE# should be asserted to mask invalid input data.

2. To interrupt a burst read by Row precharge, both the read and the precharge banks must be the same.

Contact factory for ordering information.

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

September, 2003

Rev. 1

19

White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

Share Link: