SH7713 datasheet(365/904 Pages) RENESAS

365 / 904 page

Section 11 On-Chip Oscillation Circuits

Rev.1.50 Aug. 30, 2006 Page 325 of 860

REJ09B0288-0150

Bit

Bit Name

Initial

Value

R/W

Description

TME

R/W

Timer Enable

Starts and stops timer operation. Clear this bit to 0

when using the WDT in standby mode or when

changing the clock frequency.

0: Timer disabled: Count-up stops and WTCNT value

is retained

1: Timer enabled

WT/

R/W

Timer Mode Select

Selects whether to use the WDT as a watchdog timer

or an interval timer.

0: Use as interval timer

1: Use as watchdog timer

Note:

If WT/

IT is modified when the WDT is running,

the up-count may not be performed correctly.

RSTS

R/W

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

WOVF

R/W

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

IOVF

R/W

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

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