HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 381

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13.3.12 Day of the Week Alarm Register (RWKAR)
The day of the week alarm register (RWKAR) is an 8-bit read/write register, and an alarm register
corresponding to the BCD-coded day of week section counter RWKCNT of the RTC. When the
ENB bit is set to 1, a comparison with the RWKCNT value is performed. From among the
RSECAR/RMINAR/RHRAR/RWKAR/RDAYAR/RMONAR registers, the counter and alarm
register comparison is performed only on those with ENB bits set to 1, and if each of those
coincide, an RTC alarm interrupt is generated.
The range of day of the week can be set 0 to 6 (decimal). Errant operation will result if any other
value is set.
The ENB bit in RWKAR is initialized by a power-on reset. The remaining RWKAR fields are not
initialized by a power-on reset or manual reset, or in standby mode.
Bit
7
6 to 3
2 to 0
Bit Name
ENB
Initial Value R/W Description
0
All 0
R/W Day of the week Alarm Enable
R
R/W Setting value for day of the week alarm in the BCD-code.
0: No compared
1: Compared
Always read as 0.
The range can be set from 0 to 6 (decimal).
Code
0:
1:
2:
3:
4:
5:
6:
Day of the Week
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Rev. 4.00, 03/04, page 335 of 660