STK20C04-W30 데이터 시트보기 (PDF) - Simtek Corporation
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STK20C04-W30 Datasheet PDF : 8 Pages
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STK20C04
WRITE CYCLES #1 & #2
SYMBOLS
NO.
#1
#2
#3
PARAMETER
12 tAVAVW tAVAVW tWC Write Cycle Time
13 tWLWH
tWLEH tWP Write Pulse Width
14 tELWH
tELEH
tCW Chip Enable to End of Write
15 tDVWH
tDVEH tDW Data Set-up to End of Write
16 tWHDX
tEHDX tDH Data Hold After End of Write
17 tAVWH
tAVEH
tAW Address Set-up to End of Write
18 tAVWL
tAVEL
tAS Address Set-up to Start of Write
19 tWHAX
tEHAX
20 tWLQZi,m
tWR Address Hold After End of Write
tWZ Write Enable to Output Disable
21 tWHQX
tOW Output Active After End of Write
Note f: NE must be high during entire cycle.
Note i: Measured ± 200mV from steady state output voltage.
Note k: E or W must be high during address transitions.
Note m: If W is low when E goes low, the outputs remain in the high impedance state.
STK20C04-30
MIN MAX
45
35
35
30
0
35
0
0
35
5
(VCC = 5.0V ± 10%)
STK20C04-35
MIN MAX
STK20C04-45
MIN MAX
UNITS
45
45
ns
35
35
ns
35
35
ns
30
30
ns
0
0
ns
35
35
ns
0
0
ns
0
0
ns
35
35
ns
5
5
ns
WRITE CYCLE #1: W CONTROLLED f,k
ADDRESS
12
tAVAVW
14
tELWH
E
18
tAVWL
W
17
tAVWH
13
tWLWH
DATA IN
DATA OUT
PREVIOUS DATA
20
tWLQZ
15
tDVWH
DATA VALID
HIGH IMPEDANCE
19
tWHAX
16
tWHDX
21
tWHQX
WRITE CYCLE #2: E CONTROLLED f,k
ADDRESS
E
18
tAVEL
12
tAVAVW
14
tELEH
17
tAVEH
13
W
tWLEH
DATA IN
19
tEHAX
15
tDVEH
DATA VALID
16
tEHDX
DATA OUT
HIGH IMPEDANCE
2-42
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