MS82C55A_06 Datasheet, PDF (20/26 Pages) Intersil Corporation – CMOS Programmable Peripheral Interface

Timing Waveforms
RD
INPUT
CS, A1, A0
D7-D0
MS82C55A, MQ82C55A, MP82C55A
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
tAW (7)
tWW (9)
tDW
(10)
tWD (11)
tWA (8)
tWS (12)
FIGURE 26. MODE 0 (BASIC OUTPUT)
STB
IBF
INTR
RD
INPUT FROM
PERIPHERAL
tST (16)
tSIB
(23)
tSIT
(26)
tRIT
(25)
tPH
(18)
tPS (17)
FIGURE 27. MODE 1 (STROBED INPUT)
20
tRIB (24)
FN6140.2
June 15, 2006