Hitachi H8/3048 Hardware Manual page 152

Example of Wait State Control Settings: A reset initializes ASTCR and WCER to H'FF and
WCR to H'F3, selecting programmable wait mode and three wait states for all areas. Software can
www.DataSheet4U.com
select other wait modes for individual areas by modifying the ASTCR, WCER, and WCR settings.
Figure 6-16 shows an example of wait mode settings.
3-state-access area,
programmable wait mode
Area 0
(3 states inserted)
3-state-access area,
programmable wait mode
Area 1
(3 states inserted)
3-state-access area,
Area 2
pin wait mode 0
3-state-access area,
Area 3
pin wait mode 0
2-state-access area,
Area 4
no wait states inserted
2-state-access area,
Area 5
no wait states inserted
2-state-access area,
Area 6
no wait states inserted
2-state-access area,
Area 7
no wait states inserted
Note: Wait states cannot be inserted in areas designated for two-state access by ASTCR.
Bit: 7
ASTCR H'0F: 0
WCER H'33: 0
WCR H'F3: — —
Figure 6-16 Wait Mode Settings (Example)
138
6 5 4 3
0 0 0 1
0 1 1 0
— — 0
2 1 0
1 1 1
0 1 1
0 1 1