HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 386

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Rev. 4.00, 03/04, page 340 of 660
Bit
6
5
4
3
2
1
0
Bit Name
PES2
PES1
PES0
RTCEN
ADJ
RESET
START
Initial Value R/W
0
0
0
1
0
0
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Periodic Interrupt Flags
These bits specify the periodic interrupt.
000: No periodic interrupts generated
001: Periodic interrupt generated every 1/256 second
010: Periodic interrupt generated every 1/64 second
011: Periodic interrupt generated every 1/16 second
100: Periodic interrupt generated every 1/4 second
101: Periodic interrupt generated every 1/2 second
110: Periodic interrupt generated every 1 second
111: Periodic interrupt generated every 2 seconds
RTC.
0: Halts the crystal oscillator for the RTC.
1: Runs the crystal oscillator for the RTC.
30 Second Adjustment
When 1 is written to the ADJ bit, times of 29 seconds
or less will be rounded to 00 seconds and 30 seconds
or more to 1 minute. The divider circuit will be
simultaneously reset. This bit always reads 0.
0: Runs normally.
1 : 30-second adjustment.
When 1 is written, initializes the divider circuit (RTC
prescaler and R64CNT). This bit always reads 0.
0: Runs normally.
1: Divider circuit is reset.
Start Bit
Halts and restarts the counter (clock).
0: Second/minute/hour/day/week/month/year counter
1: Second/minute/hour/day/week/month/year counter
Note: The R64CNT always runs unless stopped with
Description
Controls the operation of the crystal oscillator for the
Reset
halts.
runs normally.
the RTCEN bit.