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H8/3003 Datasheet(PDF) 159 Page - Renesas Technology Corp

Part # H8/3003
Description  microcontroller (MCU)
PDF  715 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3003 Datasheet(HTML) 159 Page - Renesas Technology Corp

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7.2.2 Refresh Timer Control/Status Register (RTMCSR)
RTMCSR is an 8-bit readable/writable register that selects the clock source for RTCNT. It also
enables or disables interrupt requests when the refresh controller is used as an interval timer.
Bits 7 and 6 are initialized by a reset and in standby mode. Bits 5 to 3 are initialized by a reset and
in hardware standby mode, but retain their previous values on transition to software standby mode.
Bit 7—Compare Match Flag (CMF): This status flag indicates that the RTCNT and RTCOR
values have matched.
Bit 7
CMF
Description
0
[Clearing condition]
Cleared by reading CMF when CMF = 1, then writing 0 in CMF
1
[Setting condition]
When RTCNT = RTCOR
Bit
Initial value
Read/Write
7
CMF
0
R/(W)
6
CMIE
0
R/W
5
CKS2
0
R/W
4
CKS1
0
R/W
3
CKS0
0
R/W
0
—
1
—
2
—
1
—
1
—
1
—
Compare match flag
Status flag indicating that RTCNT has matched RTCOR
Reserved bits
Clock select 2 to 0
These bits select an
internal clock source
for input to RTCNT
Note:
Only 0 can be written, to clear the flag.
*
*
Compare match interrupt enable
Enables or disables the CMI interrupt requested by CMF
141



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