Section 14
Realtime Clock (RTC)
Rev. 0.50 May 18, 2006 Page 681 of 1588
REJ09B0313-0050
14.3.11 Hour Alarm Register (RHRAR)
RHRAR is an alarm register corresponding to the BCD coded hour counter RHRCNT of the RTC.
When the ENB bit is set to 1, a comparison with the RHRCNT value is performed. From among
RSECAR/RMINAR/RHRAR/RWKAR/RDAYAR/RMONAR/RCR3, the counter and alarm
register comparison is performed only on those with ENB bits set to 1, and if each of those
coincides, an alarm flag of RCR1 is set to 1.
The assignable range is from 00 through 23
+
ENB bits (practically in BCD), otherwise operation
errors occur.
0
1
2
3
4
5
6
7
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
R
BIt:
Initial value:
R/W:
ENB
-
-
-
-
-
-
-
10 hours
1 hour
Bit Bit
Name
Initial
Value
R/W Description
7
ENB
0
R/W
When this bit is set to 1, a comparison with the
RHRCNT value is performed.
6
0 R
Reserved
This bit is always read as 0. The write value should
always be 0.
5, 4
10 hours
Undefined R/W
Ten's position of hours setting value
3 to 0
1 hour
Undefined R/W
One's position of hours setting value
Содержание Single-Chip Microcomputer SH7203
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Страница 726: ...Section 14 Realtime Clock RTC Rev 0 50 May 18 2006 Page 696 of 1588 REJ09B0313 0050 ...
Страница 796: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 0 50 May 18 2006 Page 766 of 1588 REJ09B0313 0050 ...
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Страница 1226: ...Section 23 USB 2 0 Host Function Module USB Rev 0 50 May 18 2006 Page 1196 of 1588 REJ09B0313 0050 ...
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Страница 1598: ...Section 31 Electrical Characteristics Rev 0 50 May 18 2006 Page 1568 of 1588 REJ09B0313 0050 ...
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