HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 1076
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HD6412332
Manufacturer Part Number
HD6412332
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412332.pdf
(1244 pages)
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HD6412332FC25V
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Part Number:
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Manufacturer:
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DRAMCR—DRAM Control Register
Rev.4.00 Sep. 07, 2007 Page 1046 of 1210
REJ09B0245-0400
Bit
Initial value
Read/Write
:
:
:
Refresh Control
RFSHE
0
1
R/W
7
0
Refresh control is not performed
Refresh control is performed
RAS-CAS Wait
0
1
RCW
R/W
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
6
0
Refresh Mode
0
1
RMODE
R/W
Self-refreshing is not performed in software standby mode
Self-refreshing is performed in software standby mode
5
0
Rr
Rc1
Compare Match Flag
cycle
0
1
cycle
CMF
[Clearing condition]
When 0 is written to CMF after reading CMF = 1
[Setting condition]
When RTCNT = RTCOR
R/W
4
0
Compare Match Interrupt Enable
0
1
H'FED7
CMIE
Interrupt request (CMI) by CMF flag disabled
Interrupt request (CMI) by CMF flag enabled
R/W
3
0
Refresh Counter Clock Select
0
1
CKS2
R/W
0
1
0
1
2
0
0
1
0
1
0
1
0
1
Count operation disabled
Count uses φ/2
Count uses φ/8
Count uses φ/32
Count uses φ/128
Count uses φ/512
Count uses φ/2048
Count uses φ/4096
CKS1
R/W
1
0
Bus Controller
CKS0
R/W
0
0
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