H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 173
H8S-2350
Manufacturer Part Number
H8S-2350
Description
16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S-2350.pdf
(1025 pages)
- Current page: 173 of 1025
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Bit 6—RAS-CAS Wait (RCW): Controls wait state insertion in DRAM interface CAS-before-
RAS refreshing.
Bit 5—Refresh Mode (RMODE): When refresh control is performed (RFSHE = 1), this bit
selects whether normal refreshing (CAS-before-RAS refreshing for the DRAM interface) or self-
refreshing is performed.
Bit 4—Compare Match Flag (CMF): Status flag that indicates a match between the values of
RTCNT and RTCOR.
When refresh control is performed (RFSHE = 1), 1 should be written to the CMF bit when writing
to DRAMCR.
Bit 6
RCW
0
1
Bit 5
RMODE
0
1
Bit 4
CMF
0
1
Description
Wait state insertion in CAS-before-RAS refreshing disabled
RAS falls in T
One wait state inserted in CAS-before-RAS refreshing
RAS falls in T
Description
DRAM interface
CAS-before-RAS refreshing used
Self-refreshing used
Description
[Clearing condition]
Cleared by reading the CMF flag when CMF = 1, then writing 0 to the CMF flag
[Setting condition]
Set when RTCNT = RTCOR
Rr
Rc1
cycle
cycle
Rev. 3.00 Sep 15, 2006 page 139 of 988
Section 6 Bus Controller
REJ09B0330-0300
(Initial value)
(Initial value)
(Initial value)
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