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GS8662Q09BGD-200 Datasheet, PDF (13/34 Pages) GSI Technology – 72Mb SigmaQuad-IITM Burst of 2 SRAM | |||
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GS8662Q08/09/18/36BD-357/333/300/250/200
Separate I/O SigmaQuad-II B2 SigmaQuad-II SRAM Read Truth Table
A
R
Output Next State
Kï
Kï
Kï
(tn)
(tn)
(tn)
X
1
Deselect
V
0
Read
Notes:
1. X = Donât Care, 1 = High, 0 = Low, V = Valid.
2. R is evaluated on the rising edge of K.
3. Q0 and Q1 are the first and second data output transfers in a read.
Q
Kï
(tn+1½)
Hi-Z
Q0
Q
Kï
(tn+2)
Hi-Z
Q1
Separate I/O SigmaQuad-II B2 SigmaQuad-II SRAM Write Truth Table
A
W
BWn
BWn
Input Next State
D
Kï
Kï
Kï
Kï
K ïï¬ï K ï
Kï
(tn + ½)
(tn)
(tn)
(tn + ½)
(tn), (tn + ½)
(tn)
V
0
0
0
Write Byte Dx0, Write Byte Dx1
D0
V
0
0
1
Write Byte Dx0, Write Abort Byte Dx1
D0
V
0
1
0
Write Abort Byte Dx0, Write Byte Dx1
X
X
0
1
1
Write Abort Byte Dx0, Write Abort Byte Dx1
X
X
1
X
X
Deselect
X
Notes:
1. X = Donât Care, H = High, L = Low, V = Valid.
2. W is evaluated on the rising edge of K.
3. D0 and D1 are the first and second data input transfers in a write.
4. BWn represents any of the Byte Write Enable inputs (BW0, BW1, etc.).
D
Kï
(tn + ½)
D1
X
D1
X
X
x36 Byte Write Enable (BWn) Truth Table
BW0 BW1 BW2 BW3
1
1
1
1
0
1
1
1
1
0
1
1
0
0
1
1
1
1
0
1
D0âD8
Donât Care
Data In
Donât Care
Data In
Donât Care
D9âD17
Donât Care
Donât Care
Data In
Data In
Donât Care
D18âD26
Donât Care
Donât Care
Donât Care
Donât Care
Data In
D27âD35
Donât Care
Donât Care
Donât Care
Donât Care
Donât Care
Rev: 1.02d 8/2017
13/34
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2011, GSI Technology
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