EasyManua.ls Logo

Renesas RX Series

Renesas RX Series
1823 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
R01UH0823EJ0100 Rev.1.00 Page 844 of 1823
Jul 31, 2019
RX23W Group 31. Independent Watchdog Timer (IWDTa)
Figure 31.3 Operation Example in Register Start Mode
Refresh-
prohibited
period
(1)
(2) (2) (2)
(1) Initial value
(2) Set value
Status flag
cleared
Status flag
cleared
Counter value
Refresh-
permitted
period
Refresh-
prohibited
period
100%
75%
50%
25%
0%
RES# pin
IWDTCR
register
Refresh
the counter
(active high)
REFEF flag
UNDFF flag
Reset output
from IWDT
(active high)
Counting starts Counting starts Counting starts
Writing to the
register is valid.
H
H
L
H
L
Writing to the
register is invalid.
Underflow
Refresh error
Writing to the
register is invalid.
Refresh error
Interrupt request
(WUNI)
(active low)

Table of Contents

Related product manuals