R5S72011 RENESAS [Renesas Technology Corp], R5S72011 Datasheet - Page 669

• Manufacturer Part Number: R5S72011
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

15.3.4
RHRCNT is used for setting/counting in the BCD-coded hour section. The count operation is
performed by a carry for each 1 hour of the minute counter.
The assignable range is from 00 through 23 (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.
RHRCNT is not initialized by a power-on reset or manual reset, or in deep standby and software
standby modes.
Bit
7, 6
5, 4
3 to 0
Bit Name

10 hours
1 hour
Hour Counter (RHRCNT)
Initial value:
Initial
Value
All 0
Undefined R/W
Undefined R/W
R/W:
Bit:
—
R
7
0
R/W
R
—
R
6
0
Description
Reserved
These bits are always read as 0. The write value should
Counting Ten's Position of Hours
Counts on 0 to 2 for ten's position of hours.
Counting One's Position of Hours
Counts on 0 to 9 once per hour. When a carry is
generated, 1 is added to the ten's position.
always be 0.
R/W
—
10 hours
5
R/W
—
4
R/W
—
3
Rev. 2.00 Sep. 07, 2007 Page 641 of 1164
R/W
—
2
1 hour
R/W
—
1
Section 15 Realtime Clock (RTC)
R/W
—
0
REJ09B0321-0200