TIMING DIAGRAMS
nCS
nIOR
DATA
(D0-D7)
BUSY
IRQ
t3
t1
t2
t4
t5
DATA VALID
t6
Parameter
t1 nCS Set Up to nIOR Low
t2 nIOR Width
t3 nCS Hold from nIOR High
t4 Data Access Time from nIOR Low
t5 Data to Float Delay from nIOR High
t6 Read Strobe to Clear IRQ
min
typ
max units
40
ns
150
ns
10
ns
100
ns
10
60
ns
40
55
ns
FIGURE 3 - MICROPROCESSOR READ TIMING
75