SH7720 Datasheet, PDF (636/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 17 Realtime Clock (RTC)
17.3.14 Month Alarm Register (RMONAR)
RMONAR is an alarm register corresponding to the month counter RMONCNT. When the ENB
bit is set to 1, a comparison with the RMONCNT 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 month alarm which can be set is 01 to 12 (decimal). Errant operation will result if
any other value is set.
The ENB bit in RMONAR is initialized by a power-on reset. The remaining RMONAR 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 R/W
0
R/W

All 0
R

Undefined R/W

Undefined R/W
Description
When this bit is set to 1, a comparison with the
RMONCNT value is performed.
Reserved
These bits are always read as 0. The write value
should always be 0.
Ten’s position of months setting value
One’s position of months setting value
17.3.15 Year Alarm Register (RYRAR)
RYRAR is an alarm register corresponding to the year counter RYRCNT. The range of year alarm
which can be set is 0000 to 9999 (decimal). Errant operation will result if any other value is set.
Bit
Bit Name
15 to 12 
11 to 8 
7 to 4 
3 to 0 
Initial Value R/W
Undefined R/W
Undefined R/W
Undefined R/W
Undefined R/W
Description
Thousand’s position of years setting value
Hundred’s position of years setting value
Ten’s position of years setting value
One’s position of years setting value
Rev. 3.00 Jan. 18, 2008 Page 574 of 1458
REJ09B0033-0300