HD6417705 Datasheet, PDF (402/739 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Bit
7, 6
5, 4
3 to 0
Bit Name

Initial Value R/W
0
R


R/W


R/W
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
10-unit of the hour counter in the BCD-code.
The range that can be set is 0 to 2 (decimal).
1-unit of the hour counter in the BCD-code.
The range that can be set is 0 to 9 (decimal).
15.3.5 Day of Week Counter (RWKCNT)
The day of week counter (RWKCNT) is an 8-bit readable/writable register used for
setting/counting in the day of week section. The count operation is performed by a carry for each
day of the date counter.
The range for day of the week that can be set is 0 to 6 (decimal). Errant operation will result if any
other value is set. Carry out write processing after stopping the count operation with the START
bit in RCR2.
RWKCNT is not initialized by a power-on reset or manual reset, or in standby mode.
Bit
7 to 3
2 to 0
Bit Name

Initial Value R/W
0
R


R/W
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
Counter for the day of week in the BCD-code.
The range that can be set is 0 to 6 (decimal).
Code Day of Week
0:
Sunday
1:
Monday
2:
Tuesday
3:
Wednesday
4:
Thursday
5:
Friday
6:
Saturday
Rev. 2.00, 09/03, page 356 of 690