Hitachi SH7032 - Page 515

480
CK
A21–A0
HBS, LBS
CSn
DACK0
RD (Read)
DACK1
AD15–AD0
DPH, DPL
(Read)
T
1
t
AD
t
CSD1
t
CSD2
t
RSD
t
RDAC1
*
1
t
ACC1
*
2
t
RDS
t
RDH
*
3
t
DACD1
t
DACD2
t
RDD
Notes: *1 For t
RDAC1
, use t
cyc
× 0.65 – 20 (for 35% duty) or t
cyc
× 0.5 – 20 (for 50% duty) instead
of t
cyc
– t
RDD
– t
RDS
.
*2 For t
ACC1
, use t
cyc
– 30 instead of t
cyc
– t
AD
(or t
CSD1
) – t
RDS
.
*3t
RDH
is measured from A21–A0, CSn, or RD, whichever is negated first.
Figure 20.8 Basic Bus Cycle: One-State Access