GS88237BB-250I 参数 Datasheet PDF下载

GS88237BB/D-333/300/250/200

Simplified State Diagram with G

X

Deselect

W

W

X

W

CW

R

R

First Write

R

CR

First Read

X

CR

CW

W

X

Burst Write

R

CR

W

CW

R

X

Burst Read

CW

CR

Notes:

1. The diagram shows supported (tested) synchronous state transitions plus supported transitions that depend upon the use of G.

2. Use of “Dummy Reads” (Read Cycles with G High) may be used to make the transition from read cycles to write cycles without passing

through a Deselect cycle. Dummy Read cycles increment the address counter just like normal read cycles.

3. Transitions shown in grey tone assume G has been pulsed high long enough to turn the RAM’s drivers off and for incoming data to meet

Data Input Set Up Time.

Rev: 1.04 3/2005

9/29

© 2002, GSI Technology

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.