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STK25CA8 Datasheet(PDF) 4 Page - List of Unclassifed Manufacturers

Part No. STK25CA8
Description  128K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM Module
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Maker  ETC [List of Unclassifed Manufacturers]
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STK25CA8 Datasheet(HTML) 4 Page - List of Unclassifed Manufacturers

   
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STK25CA8
August 1999
6-4
SRAM WRITE CYCLES #1 & #2
(VCC = 5.0V ± 10%)
Note i:
If W is low when E goes low, the outputs remain in the high-impedance state.
Note j:
E or W must be
≥ V
IH during address transitions.
SRAM WRITE CYCLE #1: W Controlledj
SRAM WRITE CYCLE #2: E Controlledj
NO.
SYMBOLS
PARAMETER
STK25CA8-35
STK25CA8-45
UNITS
#1
#2
Alt.
MIN
MAX
MIN
MAX
12
tAVAV
tAVAV
tWC
Write Cycle Time
35
45
ns
13
tWLWH
tWLEH
tWP
Write Pulse Width
25
30
ns
14
tELWH
tELEH
tCW
Chip Enable to End of Write
25
30
ns
15
tDVWH
tDVEH
tDW
Data Set-up to End of Write
12
15
ns
16
tWHDX
tEHDX
tDH
Data Hold after End of Write
0
0
ns
17
tAVWH
tAVEH
tAW
Address Set-up to End of Write
25
30
ns
18
tAVWL
tAVEL
tAS
Address Set-up to Start of Write
0
0
ns
19
tWHAX
tEHAX
tWR
Address Hold after End of Write
0
0
ns
20
tWLQZ
h, i
tWZ
Write Enable to Output Disable
13
15
ns
21
tWHQX
tOW
Output Active after End of Write
5
5
ns
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 OUT
E
ADDRESS
12
tAVAV
W
DATA IN
13
tWLEH
17
tAVEH
DATA VALID
HIGH IMPEDANCE
14
tELEH
18
tAVEL
15
tDVEH
19
tEHAX
16
tEHDX


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