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STK14CA8 Datasheet(PDF) 6 Page - Cypress Semiconductor

Part # STK14CA8
Description  128Kx8 AutoStore nvSRAM
Download  16 Pages
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

STK14CA8 Datasheet(HTML) 6 Page - Cypress Semiconductor

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STK14CA8
Document Number: 001-51592 Rev. **
Page 6 of 16
SRAM WRITE Cycles #1 and #2
Figure 8. SRAM WRITE Cycle #1: W Controlled[7,8]
Figure 9. SRAM WRITE Cycle #2: E Controlled[7,8]
NO.
Symbols
Parameter
STK14CA8-25 STK14CA8-35 STK14CA8-45
Units
#1
#2
Alt.
Min
Max
Min
Max
Min
Max
12
tAVAV
tAVAV
tWC Write Cycle Time
25
35
45
ns
13
tWLWH
tWLEH
tWP Write Pulse Width
20
25
30
ns
14
tELWH
tELEH
tCW Chip Enable to End of Write
20
25
30
ns
15
tDVWH
tDVEH
tDW Data Setup to End of Write
10
12
15
ns
16
tWHDX
tEHDX
tDH Data Hold after End of Write
0
0
0
ns
17
tAVWH
tAVEH
tAW Address Setup to End of Write
20
25
30
ns
18
tAVWL
tAVEL
tAS
Address Setup to Start of Write
0
0
0
ns
19
tWHAX
tEHAX
tWR Address Hold after End of Write
0
0
0
ns
20
tWLQZ
[5,7]
tWZ Write Enable to Output Disable
10
13
15
ns
21
tWHQX
tOW Output Active after End of Write
3
3
3
ns
Notes
7. If W is low when E goes low, the outputs remain in the high impedance state.
8. E or W must be ≥ VIH during address transitions.
PREVIOUS DATA
DATA OUT
E
ADDRESS
12
tAVAV
W
16
tWHDX
DATA IN
19
tWHAX
13
tWLWH
18
tAVWL
17
tAVWH
DATA VALID
20
tWLQZ
15
tDVWH
HIGH IMPEDANCE
21
tWHQX
14
tELWH
DATA IN
12
tAVAV
16
tEHDX
13
tWLEH
19
tEHAX
18
tAVEL
17
tAVEH
DATA VALID
15
tDVEH
HIGH IMPEDANCE
14
tELEH
DATA OUT
E
ADDRESS
W
DATA IN
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