HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 534
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Section 12 Watchdog Timer (WDT)
Rev. 3.00 Jan. 18, 2008 Page 472 of 1458
REJ09B0033-0300
Bit
7
6
5
4
3
Bit Name
TME
WT/IT
RSTS
WOVF
IOVF
Initial
Value
0
0
0
0
0
R/W
R/W
R/W
R/W
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 value is
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 operating,
Reset Select
Selects the type of reset when the WTCNT overflows in
watchdog timer mode. In interval timer mode, this setting
is ignored.
0: Power-on reset
1: Manual reset
Watchdog Timer Overflow
Indicates that the 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 the 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
retained
the up-count may not be performed correctly.
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