HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 631

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

17.3.7
RMONCNT is used for setting/counting in the BCD-coded month section. The count operation is
performed by a carry for each month of the date counter.
The range of month can be set is 01 to 12 (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.
RMONCNT is not initialized by a power-on reset or manual reset, or in standby mode.
17.3.8
RYRCNT is used for setting/counting in the BCD-coded year section. The count operation is
performed by a carry for each year of the month counter.
The range for year which can be set is 0000 to 9999 (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 or using a carry flag.
RYRCNT is not initialized by a power-on reset or manual reset, or in standby mode.
Bit
7 to 5
4
3 to 0
Bit
15 to 12
11 to 8
7 to 4
3 to 0
Month Counter (RMONCNT)
Year Counter (RYRCNT)
Bit Name



Bit Name




Initial Value
All 0
Undefined
Undefined
Initial Value
Undefined
Undefined
Undefined
Undefined
R/W
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0. Though writing
Counting Ten’s Position of Months
Counting One’s Position of Months
Counts on 0 to 9 once per month. When a carry
is generated, 1 is added to the ten’s position.
Description
Counting Thousand’s Position of Years
Counting Hundred’s Position of Years
Counting Ten’s Position of Years
Counting One’s Position of Years
has no effect, the write value should always be 0.
Rev. 3.00 Jan. 18, 2008 Page 569 of 1458
Section 17 Realtime Clock (RTC)
REJ09B0033-0300