HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 633
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HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417320.pdf
(1524 pages)
- Current page: 633 of 1524
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17.3.11 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
coincide, an alarm flag of RCR1 is set to 1.
The range of hour alarm which can be set is 00 to 23 (decimal). Errant operation will result if any
other value is set.
The ENB bit in RHRAR is initialized by a power-on reset. The remaining RHRAR fields are not
initialized by a power-on reset or manual reset, or in standby mode.
Bit
7
6
5, 4
3 to 0
Bit Name
ENB
Initial Value
0
0
Undefined
Undefined
R/W
R/W
R
R/W
R/W
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.
Rev. 3.00 Jan. 18, 2008 Page 571 of 1458
Section 17 Realtime Clock (RTC)
REJ09B0033-0300
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