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7C256 Datasheet(PDF) 5 Page - Alliance Semiconductor Corporation

Part # 7C256
Description  High Performance 32Kx8 CMOS SRAM
PDF  8 Pages
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Manufacturer  ALSC [Alliance Semiconductor Corporation]
Direct Link  https://www.alliancememory.com
Logo ALSC - Alliance Semiconductor Corporation

7C256 Datasheet(HTML) 5 Page - Alliance Semiconductor Corporation

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AS7C256
AS7C256L
5
Parameter
Symbol
-10
-12
-15
-20
-25
-35
Unit
Notes
Min Max Min Max Min Max Min Max Min Max Min Max
Write Cycle Time
tWC
10
–
12–
15
–20
–
20
–30
–
ns
Chip Enable to Write End
tCW
9
–
10
–12–
12
–
15
–
20
–
ns
Address Setup to Write End
tAW
9
–
10
–12–
12
–
15
–
20
–
ns
Address Setup Time
tAS
0
–
0
–0–
0–
0–
0–
ns
Write Pulse Width
tWP
7–
8–
9
–
12
–
15
–
17
–
ns
Address Hold From End of Write
tAH
0
–
0
–0–
0–
0–
0–
ns
Data Valid to Write End
tDW
6–
6–
8
–
10
–
10
–
15
–
ns
Data Hold Time
tDH
0
–
0
–0–
0–
0–
0–
ns
4, 5
Write Enable to Output in High Z
tWZ
–
5
–
5–5
–5
–5
–5
ns
4, 5
Output Active from Write End
tOW
3
–
3
–3–
3–
3–
3–
ns
4, 5
11
WRITE CYCLE
(VCC = 5V±10%, GND = 0V, Ta = 0°C to +70°C)
10, 11
TIMING WAVEFORM OF WRITE CYCLE 1
(WE Controlled)
tAW
tAH
tWC
Address
WE
Din
Dout
tDH
tOW
tDW
tWZ
tWP
tAS
Data Valid
AS7C256-05
10, 11
TIMING WAVEFORM OF WRITE CYCLE 2
(CE Controlled)
tAW
Address
CE
WE
Din
Dout
Data Valid
tCW
tWP
tDW
tDH
tAH
tWZ
tWC
tAS
AS7C256-06



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