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Chapter 17
Interrupt/Exception Processing Function
User’s Manual U16702EE3V2UD00
17.3.9 Eliminating noise on INTP0 to INTP7 pins
The INTP0 to INTP7 pins have a noise eliminator that eliminates noise using analog delay. Unless the
level input to each pin is held for a specific time, therefore, it cannot be detected as a signal edge i.e.,
the edge is detected after specific time.
17.3.10 Function to detect edge of INTP0 to INTP7 pins
The valid edge of the INTP0 to INTP7 pins can be selected from the following four.
•
Rising edge
•
Falling edge
•
Both edges
•
No edge detection
Table 17-3:
Watchdog Timer 2 Clock Selection
WDCS24 WDCS23 WDCS22 WDCS21 WDCS20
Selected
clock
100 kHz (MIN.) 200 kHz (TYP.) 400 kHz (MAX.)
0
0
0
0
0
2
12
/f
R
41.0 ms
20.5 ms
10.2 ms
0
0
0
0
1
2
13
/f
R
81.9 ms
41.0 ms
20.5 ms
0
0
0
1
0
2
14
/f
R
163.8 ms
81.9 ms
41.0 ms
0
0
0
1
1
2
15
/f
R
327.7 ms
163.8 ms
81.9 ms
0
0
1
0
0
2
16
/f
R
655.4 ms
327.7 ms
163.8 ms
0
0
1
0
1
2
17
/f
R
1310.7 ms
655.4 ms
327.7 ms
0
0
1
1
0
2
18
/f
R
2621.4 ms
1310.7 ms
655.4 ms
0
0
1
1
1
2
19
/f
R
5242.9 ms
2621.47 ms
1310.7 ms
f
XX
= 24 MHz
f
XX
= 32 MHz
f
XX
= 40 MHz
0
1
0
0
0
2
18
/f
XX
10.9 ms
8.19 ms
6.6 ms
0
1
0
0
1
2
19
/f
XX
21.8 ms
16.4 ms
13.1 ms
0
1
0
1
0
2
20
/f
XX
43.7 ms
32.8 ms
26.2 ms
0
1
0
1
1
2
21
/f
XX
87.4 ms
65.5 ms
52.2 ms
0
1
1
0
0
2
22
/f
XX
174.8 ms
131.1 ms
104.9 ms
0
1
1
0
1
2
23
/f
XX
349.5 ms
262.1 ms
209.7 ms
0
1
1
1
0
2
24
/f
XX
699.1 ms
524.3 ms
419.4 ms
0
1
1
1
1
2
25
/f
XX
1398.1 ms
1048.6 ms
838.9 ms
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