82C55A Intersil Corporation, 82C55A Datasheet - Page 19

• Manufacturer Part Number: 82C55A
• Description: CMOS Programmable Peripheral Interface
• Manufacturer: Intersil Corporation

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