SH7261 Datasheet, PDF (676/1348 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 15 Realtime Clock (RTC)
15.3.3 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 assignable range is from 00 through 59 (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.
RMINCNT is not initialized by a power-on reset or manual reset, or in deep standby and software
standby modes.
Bit: 7
—
Initial value: 0
R/W: R
6
5
4
3
2
1
0
10 minutes
1 minute
———————
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
10 minutes Undefined R/W
1 minute 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. 2.00 Sep. 07, 2007 Page 644 of 1312
REJ09B0320-0200