SH7730 Datasheet, PDF (573/1188 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7780 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
—
Initial value: 0
R/W: R
6
5
4
3
2
1
0
10-minute units
1-minute units
———————
R/W R/W R/W R/W R/W R/W R/W
Bit
7
6 to 4
3 to 0
Initial
Bit Name 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. 1.00 Sep. 19, 2007 Page 525 of 1136
REJ09B0359-0100