Datasheet

Appendix B Internal I/O Register
R01UH0166EJ0600 Rev. 6.00 Page 1305 of 1434
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
DRAMCR—DRAM Control Register H'FED7 Bus Controller
(This function is not available in the H8S/2695.)
7
RFSHE
0
R/W
6
CBRM
0
R/W
5
RMODE
0
R/W
4
CMF
0
R/W
3
CMIE
0
R/W
0
CKS0
0
R/W
2
CKS2
0
R/W
1
CKS1
0
R/W
Refresh control
0 [Clearing condition]
Writing 0 to CMF flag after reading CMF=1.
[Setting condition]
When RTCNT=RTCOR.
1
CBR refresh mode
Do not perform self-refresh in software standby
mode.
Perform self-refresh in software standby mode.
0
1
External access enabled at CAS-before-RAS refresh.
External access disabled at CAS-before-RAS refresh.
0
1
Do not perform refresh control.
Perform refresh control.
0
1
Refresh mode
CMF flag interrupt request (CMI) disabled.
CMF flag interrupt request (CMI) enabled.
Counting on ø/8
Counting on ø/32
No counting operation
Counting on ø/2
0
1
Compare match flag
Refresh counter clock select
Compare match interrupt enable
0
1
0
CKS0CKS1CKS2
0
0
1
1
Counting on ø/2048
Counting on ø/4096
Counting on ø/128
Counting on ø/512
0
1
01
0
1
1
Bit
Initial value
R/W
:
:
: