HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 626

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

Section 17 Realtime Clock (RTC)
17.3.2
RSECCNT is used for setting/counting in the BCD-coded second section. The count operation is
performed by a carry for each second of the 64-Hz counter.
The range of second can be set is 00 to 59 (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.
RSECCNT is not initialized by a power-on reset or manual reset, or in standby mode.
Rev. 3.00 Jan. 18, 2008 Page 564 of 1458
REJ09B0033-0300
Bit
7
6 to 4
3 to 0
Second Counter (RSECCNT)
Bit Name



Initial Value
0
Undefined
Undefined
R/W
R
R/W
R/W
Description
Reserved
This bit is always read as 0. The write value
should always be 0.
Counting Ten’s Position of Seconds
Counts on 0 to 5 for 60-seconds counting.
Counting One’s Position of Seconds
Counts on 0 to 9 once per second. When a carry
is generated, 1 is added to the ten’s position.