SH7205 Datasheet, PDF (737/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 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.
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. 1.00 Mar. 25, 2008 Page 705 of 1868
REJ09B0372-0100