SH7261 Datasheet, PDF (678/1348 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 15 Realtime Clock (RTC)
15.3.5 Day of Week Counter (RWKCNT)
RWKCNT is used for setting/counting day of week section. The count operation is performed by a
carry for each day of the date counter.
The assignable range is from 0 through 6 (practically in BCD), otherwise operation errors occur.
Carry out write processing after stopping the count operation through the setting of the START bit
in RCR2.
RWKCNT is not initialized by a power-on reset or manual reset, or in deep standby and software
standby modes.
Bit: 7
6
5
4
3
2
1
0
—————
Day
Initial value: 0
0
0
0
0 ———
R/W: R R R R R R/W R/W R/W
Bit Bit Name
7 to 3 
2 to 0 Day
Initial
Value
R/W
All 0
R
Undefined R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Day-of-Week Counting
Day-of-week is indicated with a binary code.
000: Sunday
001: Monday
010: Tuesday
011: Wednesday
100: Thursday
101: Friday
110: Saturday
111: Reserved (setting prohibited)
Rev. 2.00 Sep. 07, 2007 Page 646 of 1312
REJ09B0320-0200