STK15C88-45 Ver la hoja de datos (PDF) - Unspecified
Número de pieza
componentes Descripción
Fabricante
STK15C88-45 Datasheet PDF : 9 Pages
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STK15C88
SRAM WRITE CYCLES #1 & #2
SYMBOLS
NO.
#1
#2
Alt.
PARAMETER
12
tAVAV
13 tWLWH
14 tELWH
15 tDVWH
16 tWHDX
17 tAVWH
18 tAVWL
19 tWHAX
20 tWLQZh, i
21 tWHQX
tAVAV
tWLEH
tELEH
tDVEH
tEHDX
tAVEH
tAVEL
tEHAX
tWC Write Cycle Time
tWP Write Pulse Width
tCW Chip Enable to End of Write
tDW Data Set-up to End of Write
tDH Data Hold After End of Write
tAW Address Set-up to End of Write
tAS Address Set-up to Start of Write
tWR Address Hold After End of Write
tWZ Write Enable to Output Disable
tOW Output Active After End of Write
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 ≥ VIH during address transitions.
SRAM WRITE CYCLE #1: W CONTROLLEDj
ADDRESS
12
tAVAV
14
tELWH
E
(Vcc = 5.0V ± 10%)
STK15C88-25 STK15C88-35 STK15C88-45
UNITS
MIN MAX MIN MAX MIN MAX
25
35
45
ns
20
25
30
ns
20
25
30
ns
10
12
15
ns
0
0
0
ns
20
25
30
ns
0
0
0
ns
0
0
0
ns
10
13
15
ns
5
5
5
ns
19
tWHAX
18
tAVWL
W
17
tAVWH
13
tWLWH
DATA IN
20
tWLQZ
DATA OUT
PREVIOUS DATA
SRAM WRITE CYCLE #2: E CONTROLLEDj
ADDRESS
12
tAVAV
18
tAVEL
14
tELEH
E
15
tDVWH
DATA VALID
HIGH IMPEDENCE
16
tWHDX
21
tWHQX
19
tEHAX
W
DATA IN
DATA OUT
17
tAVEH
13
tWLEH
15
tDVEH
DATA VALID
HIGH IMPEDENCE
16
tEHDX
August 1998
5-38
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