HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 242

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9 Watchdog Timer (WDT)
Rev. 6.00 Jun. 12, 2007 Page 210 of 610
REJ09B0131-0600
Bit
7
6
5
4
3
Bit Name
TME
WT/IT

WOVF
IOVF
Initial
Value
0
0
0
0
0
R/W
R/W
R/W
R
R/W
R/W
Description
Timer Enable
Starts and stops timer operation. Clear this bit to 0
when using the WDT in software standby mode or
when changing the clock frequency.
0: Timer disabled: Count-up stops and WTCNT
1: Timer enabled
Timer Mode Select
Selects whether to use the WDT as a watchdog
timer or an interval timer.
0: Interval timer mode
1: Watchdog timer mode
Note: If WT/IT is modified when the WDT is
Reserved
This bit is always red as 0. The write value should
always be 0.
Watchdog Timer Overflow
Indicates that WTCNT has overflowed in watchdog
timer mode. This bit is not set in interval timer mode.
0: No overflow
1: WTCNT has overflowed in watchdog timer mode
Interval Timer Overflow
Indicates that WTCNT has overflowed in interval
timer mode. This bit is not set in watchdog timer
mode.
0: No overflow
1: WTCNT has overflowed in interval timer mode
value is retained
operating, the up-count may not be
performed correctly.