71V3558S200PFG Datasheet, PDF (12/28 Pages) Integrated Device Technology – 128K x 36, 256K x 18 3.3V Synchronous ZBT SRAMs 3.3V I/O, Burst Counter Pipelined Outputs

IDT71V3556, IDT71V3558, 128K x 36, 256K x 18, 3.3V Synchronous SRAMS with
ZBT™ Feature, 3.3V I/O, Burst Counter, and Pipelined Outputs
Commercial and Industrial Temperature Ranges
Burst Read Operation ⁽¹⁾
Cycle
Address
R/W ADV/LD CE⁽²⁾ CEN BWx
OE
I/O Comments
n
A0
H
L
L
L
X
X
X Address and Control meet setup
n+1
X
X
H
X
L
X
X
X Clock Setup Valid, Advance Counter
n+2
X
X
H
X
L
X
L
Q0 Address A0 Read Out, Inc. Count
n+3
X
X
H
X
L
X
L
Q0+1 Address A0+1 Read Out, Inc. Count
n+4
X
X
H
X
L
X
L
Q0+2 Address A0+2 Read Out, Inc. Count
n+5
A1
H
L
L
L
X
L
Q0+3 Address A0+3 Read Out, Load A1
n+6
X
X
H
X
L
X
L
Q0 Address A0 Read Out, Inc. Count
n+7
X
X
H
X
L
X
L
Q1 Address A1 Read Out, Inc. Count
n+8
A2
H
L
L
L
X
L
Q1+1 Address A1+1 Read Out, Load A2
NOTES:
1. H = High; L = Low; X = Don’t Care; Z = High Impedance..
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
5281 tbl 14
Write Operation ⁽¹⁾
Cycle
Address
R/W ADV/LD CE⁽²⁾ CEN BWx
OE
n
A0
L
L
L
L
L
X
n+1
X
X
X
X
L
X
X
n+2
X
X
X
X
L
X
X
I/O Comments
X Address and Control meet setup
X Clock Setup Valid
D0 Write to Address A0
NOTES:
1. H = High; L = Low; X = Don’t Care; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
Burst Write Operation ⁽¹⁾
Cycle
Address
R/W ADV/LD CE⁽²⁾ CEN BWx
OE
I/O Comments
n
A0
L
L
L
L
L
X
X Address and Control meet setup
n+1
X
X
H
X
L
L
X
X Clock Setup Valid, Inc. Count
n+2
X
X
H
X
L
L
X
D0 Address A0 Write, Inc. Count
n+3
X
X
H
X
L
L
X
D0+1 Address A0+1 Write, Inc. Count
n+4
X
X
H
X
L
L
X
D0+2 Address A0+2 Write, Inc. Count
n+5
A1
L
L
L
L
L
X
D0+3 Address A0+3 Write, Load A1
n+6
X
X
H
X
L
L
X
D0 Address A0 Write, Inc. Count
n+7
X
X
H
X
L
L
X
D1 Address A1 Write, Inc. Count
n+8
A2
L
L
L
L
L
X
D1+1 Address A1+1 Write, Load A2
NOTES:
1. H = High; L = Low; X = Don’t Care; ? = Don’t Know; Z = High Impedance.
2. CE = L is defined as CE1 = L, CE2 = L and CE2 = H. CE = H is defined as CE1 = H, CE2 = H or CE2 = L.
5281 tbl 15
5281 tbl 16
6.1422