GS8128218GD-250I Datasheet, PDF (13/37 Pages) GSI Technology – 8M x 18, 4M x 36 144Mb S/DCD Sync Burst SRAMs

GS8128218/36(GB/GD)-400/333/250/200
Simplified State Diagram with G
X
Deselect
W
R
W
R
X
First Write ^R
CW
CR
W
First Read
X
CW
CR
W
X
R
Burst Write
CR
CW
R
W _{Burst Read X}
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: 1.01 5/2017
13/36
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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