
147
ø
T
W
AS*
A15 to A0,
IOS*
RD
(read)
T
3
D7 to D0
(read)
WR
(write)
D7 to D0
(write)
T
2
t
WTS
T
1
t
WTH
t
WTS
t
WTH
WAIT
Note: * AS and IOS are the same pin. The function is selected b
the IOSE bit in SYSCR.
Figure 22.60 Basic Bus Timing (Three-State Access with One Wait State)