SH7713 Datasheet, PDF (552/904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 15 Realtime Clock (RTC)
15.3.6 Date Counter (RDAYCNT)
RDAYCNT is 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.
Though the range of date which can be set is 1 to 31 (decimal), it changes with each month 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 an 8-bit readable/writable register and 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
All 0
R


R/W


R/W
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
Counter for 10-unit of date in the BCD-code.
The range can be set from 0 to 3 (decimal).
Counter for 1-unit of date in the BCD-code.
The range can be set from 0 to 9 (decimal).
15.3.7 Month Counter (RMONCNT)
RMONCNT is 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 can be set is 1 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 an 8-bit readable/writable register and not initialized by a power-on reset or
manual reset, or in standby mode.
Rev.1.50 Aug. 30, 2006 Page 512 of 860
REJ09B0288-0150