Year Counter (Ryrcnt); Second Alarm Register (Rsecar) - Renesas RZ/A Series User Manual

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
13.3.8

Year Counter (RYRCNT)

RYRCNT is the counter used for setting/counting the BCD-coded year value. The count operation is performed by a
carry for each year of the month counter.
The assignable range is from 0000 through 9999 (practically in BCD); otherwise an operation error will occur. Carry out
write processing after stopping the count operation through the setting of the START bit in RCR2.
BIt: 15
Initial value:
Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined
R/W: R/W
Bit Bit Name
15 to 12 1000 years
11 to 8 100 years
7 to 4 10 years
3 to 0 1 year
13.3.9

Second Alarm Register (RSECAR)

RSECAR is an alarm register corresponding to the BCD-coded second counter RSECCNT. When the ENB bit is set to 1,
a comparison with the RSECCNT 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 seconds
3 to 0 1 second
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
14 13 12 11 10
1000 years 100 years
R/W R/W R/W R/W R/W
Initial
Value R/W Description
Undefined R/W Counting Thousand's Position of Years
Undefined R/W Counting Hundred's Position of Years
Undefined R/W Counting Ten's Position of Years
Undefined R/W Counting One's Position of Years
BIt: 7 6
ENB 10 seconds
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 RSECCNT value is performed.
Undefined R/W Ten's position of seconds setting value
Undefined R/W One's position of seconds setting value
9 8 7 6 5
10 years
R/W R/W R/W R/W R/W
5 4 3 2 1
1 second
R/W R/W R/W R/W R/W
13. Realtime Clock
4 3 2 1 0
1 year
R/W R/W R/W R/W R/W
0
R/W
13-8