Section 20 Realtime Clock (RTC)
Rev.1.00 Dec. 13, 2005 Page 723 of 1286
REJ09B0158-0100
Bit Bit
Name
Initial
Value R/W
Description
0 AF Undefined
R/W
Alarm
Flag
Set to 1 when the alarm time set in those registers
among RSECAR, RMINAR, RHRAR, RWKAR,
RDAYAR, and RMONAR in which the ENB bit is set to
1 matches the respective counter values
0: Alarm registers and counter values do not match
(Initial value)
[Clearing condition]
When 0 is written to AF
1: Alarm registers and counter values match
*
[Setting condition]
When alarm registers in which the ENB bit is
set to 1
and counter values match
*
Note:
*
Writing 1 does not change the value.
20.3.17 RTC Control Register 2 (RCR2)
RCR2 is an 8-bit readable/writable register used for periodic interrupt control, 30-second
adjustment, and frequency divider RESET and RTC count control.
RCR2 is basically initialized to H'09 by a power-on reset, except that the value of the PEF bit is
undefined. In a manual reset, bits other than RTCEN and START are initialized, while the value
of the PEF bit is undefined. In standby mode RCR2 is not initialized, and retains its current value.
0
1
2
3
4
5
6
7
1
0
0
1
0
0
0
—
START
RESET
ADJ
RTCEN
PES[2:0]
PEF
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BIt:
Initial value:
R/W:
Содержание SH7780 Series
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Страница 450: ...Section 11 Local Bus State Controller LBSC Rev 1 00 Dec 13 2005 Page 400 of 1286 REJ09B0158 0100 ...
Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
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Страница 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
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Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
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