Minute Alarm Register (Rminar); Hour Alarm Register (Rhrar) - Renesas RZ/A Series User Manual

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
13.3.10

Minute Alarm Register (RMINAR)

RMINAR is an alarm register corresponding to the BCD-coded minute counter RMINCNT. When the ENB bit is set to 1,
a comparison with the RMINCNT 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 59 + ENB bits (practically in BCD); otherwise an operation error will occur.
Bit Bit Name
7 ENB
6 to 4 10 minutes
3 to 0 1 minute
13.3.11

Hour Alarm Register (RHRAR)

RHRAR is an alarm register corresponding to the BCD-coded hour counter RHRCNT. 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 an operation error will occur.
Bit Bit Name
7 ENB
—
6
5, 4 10 hours
3 to 0 1 hour
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
BIt: 7 6
ENB 10 minutes
Initial value:
Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined
R/W: R/W R/W
Initial
Value R/W Description
Undefined R/W When this bit is set to 1, a comparison with the RMINCNT value is performed.
Undefined R/W Ten's position of minutes setting value
Undefined R/W One's position of minutes setting value
BIt: 7 6
ENB -
Initial value: 0
Undefined
R/W: R/W R
Initial
Value R/W Description
Undefined R/W When this bit is set to 1, a comparison with the RHRCNT value is performed.
0 R Reserved
This bit is always read as 0. The write value should always be 0.
Undefined R/W Ten's position of hours setting value
Undefined R/W One's position of hours setting value
5 4 3 2 1
1 minute
R/W R/W R/W R/W R/W
5 4 3 2 1
10 hours 1 hour
Undefined Undefined Undefined Undefined Undefined Undefined
R/W R/W R/W R/W R/W
13. Realtime Clock
0
R/W
0
R/W
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