HD6417705F133V Datasheet, PDF (405/741 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

15.3.6 Date Counter (RDAYCNT)
The date counter (RDAYCNT) is an 8-bit readable/writable register used for setting/counting in
the BCD-coded date section. The count operation is performed by a carry for each day of the hour
counter.
The range of date that can be set changes within 01 to 31 (decimal) with some months and in leap
years. Please confirm the correct setting. 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.
RDAYCNT is not initialized by a power-on reset or manual reset, or in standby mode.
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 date counter in the BCD-code.
The range that can be set is 0 to 3 (decimal).
1-unit of the date counter in the BCD-code.
The range that can be set is 0 to 9 (decimal).
15.3.7 Month Counter (RMONCNT)
The month counter (RMONCNT) is an 8-bit readable/writable register used for setting/counting in
the BCD-coded month section. The count operation is performed by a carry for each month of the
date counter.
The range of month that can be set is 01 to 12 (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.
RMONCNT is not initialized by a power-on reset or manual reset, or in standby mode.
Bit
7 to 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 month counter in the BCD-code.
The range that can be set is 0 to 1 (decimal).
1-unit of the month counter in the BCD-code.
The range that can be set is 0 to 9 (decimal).
Rev. 2.00, 09/03, page 357 of 690