Renesas RX100 Series User Manual page 575

RX13T Group
Counter value
100%
Refresh-
prohibited period
75%
50%
Refresh-
permitted period
25%
Refresh-
prohibited period
0%
RES# pin
Refresh
H
the counter
L
(active high)
Counting starts
REFEF flag
UNDFF flag
Interrupt request
H
(WUNI)
L
(active low)
Reset output
from IWDT
L
(active high)
Figure 22.4 Operation Example in Auto-Start Mode
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
22. Independent Watchdog Timer (IWDTa)
Counting starts
Underflow
Refresh error
Status flag
cleared
Counting starts Counting starts
Refresh error
Status flag
cleared
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