SH7713 Datasheet, PDF (559/904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 15 Realtime Clock (RTC)
Bit
7
6, 5
4
3 to 0
Bit Name
ENB
Initial Value R/W
0
R/W

All 0
R


R/W


R/W
Description
Month Alarm Enable
Specifies whether comparison of RMONCNT and
RMONAR is performed as an alarm condition.
0: Not compared
1: Compared
Reserved
These bits are always read as 0. The write value
should always be 0.
Setting value for 10-unit of month alarm in the
BCD-code.
The range can be set from 0 to 1 (decimal).
Setting value for 1-unit of month alarm in the
BCD-code.
The range can be set from 0 to 9 (decimal).
15.3.15 Year Alarm Register (RYRAR)
RYRAR is an alarm register corresponding to the year counter RYRCNT. When the YAEN bit in
RCR3 is set to 1, a comparison with the RYRCNT value is performed. From among
RSECAR/RMINAR/RHRAR/RWKAR/RDAYAR/ and RMONAR, the counter and alarm register
comparison is performed only on those with ENB bits and the YAEN bit in RCR3 set to 1, and if
each of those coincide, an RTC alarm interrupt is generated.
The range of year alarm which can be set is 0000 to 9999 (decimal). Errant operation will result if
any other value is set.
RYRAR is a 16-bit readable/writable register. The contents are not initialized by a power-on reset
or manual reset, or in standby mode.
Rev.1.50 Aug. 30, 2006 Page 519 of 860
REJ09B0288-0150