HD6417705 Datasheet, PDF (409/739 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

15.3.14 Month Alarm Register (RMONAR)
The month alarm register (RMONAR) is an 8-bit readable/writable register, and 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. For alarm registers RSECAR, RMINAR, RHRAR, RWKAR,
RDAYAR, and RMONAR, a comparison with the corresponding counter value is performed for
those whose ENB bit is set to 1, and for RCR3, a comparison is performed when the YAEN bit is
set to 1. If all of those match, an RTC alarm interrupt is generated.
The range of month alarm that 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, and it is not initialized by manual
reset and standby mode. 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

0
R


R/W


R/W
Description
Month Alarm Enable
Specifies whether to compare RMONCNT with
RMONAR to generate a second alarm.
0: Not compared
1: Compared
Reserved
These bits are always read as 0. The write value
should always be 0.
10-unit of month alarm setting in the BCD-code.
The range that can be set is 0 to 1 (decimal).
1-unit of month alarm setting in the BCD-code.
The range that can be set is 0 to 9 (decimal).
Rev. 2.00, 09/03, page 363 of 690