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CS82C55A-5 View Datasheet(PDF) - Harris Semiconductor
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CS82C55A-5
CMOS Programmable Peripheral Interface
Harris Semiconductor
CS82C55A-5 Datasheet PDF : 26 Pages
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Timing Waveforms
RD
INPUT
CS, A1, A0
D7-D0
82C55A
tIR (13)
tAR (1)
tRR (3)
tHR (14)
tRA (2)
tRD (4)
FIGURE 25. MODE 0 (BASIC INPUT)
tDF (5)
WR
D7-D0
CS, A1, A0
OUTPUT
STB
IBF
INTR
RD
INPUT FROM
PERIPHERAL
tAW (7)
tWW (9)
tDW
(10)
tWD (11)
tWA (8)
tWS (12)
FIGURE 26. MODE 0 (BASIC OUTPUT)
tST (16)
tSIB
(23)
tSIT
(26)
tRIT
(25)
tPH
(18)
tPS (17)
FIGURE 27. MODE 1 (STROBED INPUT)
tRIB (24)
19
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