HD6417706 Datasheet, PDF (375/709 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

13.3.3 Minute Counter (RMINCNT)
The minute counter (RMINCNT) is an 8-bit read/write register used for setting/counting in the
BCD-coded minute section of the RTC. 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 halting 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

R/W

R/W
Description
Always read as 0.
Counter for 10-unit of minute in the BCD-code. The
range can be set from 0 to 5 (decimal).
Counter for 1-unit of minute in the BCD-code.
The range can be set from 0 to 9 (decimal).
13.3.4 Hour Counter (RHRCNT)
The hour counter (RHRCNT) is an 8-bit read/write register used for setting/counting in the BCD-
coded hour section of the RTC. The count operation is performed by a carry for each 1 hour of the
minute counter.
The range of hour can be set is 00 to 23 (decimal). Errant operation will result if any other value is
set. Carry out write processing after halting the count operation with the START bit in RCR2.
RHRCNT is not initialized by a power-on reset or manual reset, or in standby mode.
Bit
7, 6
5, 4
3 to 0
Bit Name



Initial Value R/W
All 0
R

R/W

R/W
Description
Always read as 0.
Counter for 10-unit of hour in the BCD-code.
The range can be set from 0 to 2 (decimal).
Counter for 1-unit of hour in the BCD-code.
The range can be set from 0 to 9 (decimal).
Rev. 4.00, 03/04, page 329 of 660