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82C50A(1997) 데이터 시트보기 (PDF) - Intersil
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82C50A
(Rev.:1997)
CMOS Asynchronous Communications Element
Intersil
82C50A Datasheet PDF : 21 Pages
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82C50A
Timing Waveforms
(Continued)
(1)
tAW
ADS
(2) tAS
A2, A1, A0
(4) tCS
CS2, CS1, CS0
CSOUT
VALID
VALID
(17)
tCSC
†
(3) tAH
(5) tCH
(22) tWA
†
(23)
tWCS
†
(25)
tCSW
†
(24)
tAW
†
(12)
tDOW
(14)
WC
(13)
tWC
DOSTR/DOSTR
ACTIVE
DISTR/DISTR
DATA
D0-D7
†
Applicable only when ADS is tied low.
(15) tDS
(16) tDH
VALID DATA
FIGURE 6. WRITE CYCLE
ADS
(2) tAS
A2, A1, A0
(4) tCS
CS2, CS1, CS0
CSOUT
DISTR/DISTR
(1)
tAW
VALID
VALID
(17)
tCSC
†
(3) tAH
(5) tCH
(18) tRA
†
(19)
tRCS
†
(21)
tCSR
†
(20)
tAR
†
(6)
tDIW
ACTIVE
(8)
RC
(7)
tRC
DOSTR/DOSTR
DD/S
DATA
D0-D7
†
Applicable only when ADS is tied low.
(9)
(9)
tDD
tDD
(10)
tDDD
(11) tHZ
VALID DATA
FIGURE 7. READ CYCLE
ACTIVE
OR
ACTIVE
ACTIVE
OR
ACTIVE
20
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