U636H04DC25 Просмотр технического описания (PDF) - Zentrum Mikroelektronik Dresden AG
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U636H04DC25 Datasheet PDF : 11 Pages
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U636H04
Write Cycle #1: W-controlledj
Preliminary
Ai
E
W
DQi
Input
DQi
Output
12
tcW
Address Valid
17
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
tsu(E)
16
tsu(A-WH)
15 AAAAAAAAAAAAAAAAAAAAAAAAAAAA
tsu(A)
13
tw(W)
19
tsu(D)
21
AAAAAAAAAAAAAAAAAAAAAAAAAAAAtAAAAh(AAAAAAAAA) AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
20
th(D)
22
tdis(W)
Previous Data
Input Data
Valid
23
High Impedance ten(W)
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Write Cycle #2: E-controlledj
Ai
E
W
DQi
Input
DQi
Output
15
tsu(A )
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
12
tcW
Address Valid
18
21
tw(E)
th(A)
14
tsu(W)
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
19
tsu(D)
20
th(D)
Input Data
Valid
High Impedance
undefined AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
L- to H-level AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
H- to L-level AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
i: If W is LOW and when E goes LOW, the outputs remain in the high impedance state.
j: E or W must be VIH during address transition.
6
December 12, 1997
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