SH7261 Datasheet, PDF (681/1348 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 15 Realtime Clock (RTC)
15.3.8 Year Counter (RYRCNT)
RYRCNT is used for setting/counting in the BCD-coded year section. The count operation is
performed by a carry for each year of the month counter.
The assignable range is from 0000 through 9999 (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.
RYRCNT is not initialized by a power-on reset or manual reset, in deep standby mode or software
standby mode.
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
1000 years
100 years
10 years
1 year
Initial value: — — — — — — — — — — — — — — — —
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial
Bit
Bit Name Value
R/W
15 to 12 1000 years Undefined R/W
11 to 8 100 years Undefined R/W
7 to 4 10 years Undefined R/W
3 to 0 1 year
Undefined R/W
Description
Counting Thousand's Position of Years
Counting Hundred's Position of Years
Counting Ten's Position of Years
Counting One's Position of Years
Rev. 2.00 Sep. 07, 2007 Page 649 of 1312
REJ09B0320-0200