SH7720 Datasheet, PDF (627/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 17 Realtime Clock (RTC)
17.3.3 Minute Counter (RMINCNT)
RMINCNT is used for setting/counting in the BCD-coded minute section. The count operation is
performed by a carry for each minute of the second counter.
The range of minute can be set is 00 to 59 (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.
RMINCNT is not initialized by a power-on reset or manual reset, or in standby mode.
Bit
7
6 to 4
3 to 0
Bit Name

Initial Value R/W
0
R

Undefined R/W

Undefined R/W
Description
Reserved
This bit is always read as 0.The write value
should always be 0.
Counting Ten’s Position of Minutes
Counts on 0 to 5 for 60-minutes counting.
Counting One’s Position of Minutes
Counts on 0 to 9 once per second. When a carry
is generated, 1 is added to the ten’s position.
Rev. 3.00 Jan. 18, 2008 Page 565 of 1458
REJ09B0033-0300