R5S72011 RENESAS [Renesas Technology Corp], R5S72011 Datasheet - Page 676
R5S72011
Manufacturer Part Number
R5S72011
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R5S72011.pdf
(1196 pages)
- Current page: 676 of 1196
- Download datasheet (8Mb)
Section 15 Realtime Clock (RTC)
15.3.11 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.
The ENB bit in RHRAR is initialized by a power-on reset or in deep standby mode. The other bits
are not initialized by a power-on reset or manual reset, or in deep standby and software standby
modes.
Rev. 2.00 Sep. 07, 2007 Page 648 of 1164
REJ09B0321-0200
Bit
7
6
5, 4
3 to 0
Bit Name
ENB
10 hours
1 hour
Initial value:
Initial
Value
0
0
Undefined R/W
Undefined R/W
R/W:
Bit:
ENB
R/W
7
0
R/W
R/W
R
—
R
6
0
Description
When this bit is set to 1, a comparison with the
Reserved
This bit is always read as 0. The write value should
always be 0.
Ten's position of hours setting value
One's position of hours setting value
RHRCNT value is performed.
R/W
—
10 hours
5
R/W
—
4
R/W
—
3
R/W
—
2
1 hour
R/W
—
1
R/W
—
0
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