STK12C68-55M データシートの表示（PDF） - Unspecified
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STK12C68-55M Datasheet PDF : 10 Pages
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STK12C68-M
WRITE CYCLES #1 & #2
SYMBOLS
NO.
#1
#2
Alt.
12
tAVAV
tAVAV
tWC
13
tWLWH
tWLEH
tWP
14
tELWH
tELEH
tCW
15
tDVWH
tDVEH
tDW
16
tWHDX
tEHDX
tDH
17
tAVWH
tAVEH
tAW
18
tAVWL
tAVEL
tAS
19
tWHAX
tEHAX
tWR
20
tWLQZh,j
tWZ
21
tWHQX
tOW
PARAMETER
Write Cycle Time
Write Pulse Width
Chip Enable to End of Write
Data Set-up to End of Write
Data Hold After End of Write
Address Set-up to End of Write
Address Set-up to Start of Write
Address Hold After End of Write
Write Enable to Output Disable
Output Active After End of Write
(VCC = 5.0V ± 10%)d
STK12C68-40M
MIN MAX
STK12C68-45M
MIN MAX
STK12C68-55M
MIN MAX
UNITS
35
45
55
ns
30
35
45
ns
30
35
45
ns
18
20
25
ns
0
0
0
ns
30
35
45
ns
0
0
0
ns
0
0
0
ns
17
20
25
ns
5
5
5
ns
Note h: Measured ±200mV from steady state output voltage.
Note i: E or W must be ≥ VIH during address transitions.
Note j: If W is low when E goes low, the outputs remain in the high impedance state.
WRITE CYCLE #1: W CONTROLLED i
ADDRESS
12
tAVAV
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 i
ADDRESS
E
18
tAVEL
W
12
tAVAV
14
tELEH
17
tAVEH
13
tWLEH
DATA IN
19
tEHAX
15
tDVEH
DATA VALID
16
tEHDX
DATA OUT
HIGH IMPEDANCE
4-56
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