HD6432670 Hitachi, HD6432670 Datasheet - Page 284

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Rev. 2.0, 04/02, page 238 of 906
Address bus
Data bus
Address bus
(Consecutive Reads in Different Areas) (IDLC = 0, RAST = 0, CAST = 0)
,
Data bus
Figure 6.76 Example of Idle Cycle Operation after DRAM Access
Figure 6.77 Example of Idle Cycle Operation after DRAM Access
,
,
ø
ø
(Write after Read) (IDLC = 0, RAST = 0, CAST = 0)
T
p
DRAM space read
T
p
DRAM space read
T
r
T
r
T
c1
T
c1
T
c2
T
Idle cycle
c2
T
Idle cycle
i
T
i
External read
T
1
External write
T
1
T
2
T
2
T
3
T
3
DRAM space read
T
DRAM space read
i
T
c1
T
c1
T
c2
T
c2