upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 708

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

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.
708
WDCS24 WDCS23 WDCS22 WDCS21 WDCS20
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
• Rising edge
• Falling edge
• Both edges
• No edge detection
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Chapter 17 Interrupt/Exception Processing Function
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Table 17-3: Watchdog Timer 2 Clock Selection
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
User’s Manual U16702EE3V2UD00
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Selected
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
clock
18
19
20
21
22
23
24
25
12
13
14
15
16
17
18
19
/f
/f
/f
/f
/f
/f
/f
/f
/f
/f
/f
/f
/f
/f
/f
/f
XX
XX
XX
XX
XX
XX
XX
XX
R
R
R
R
R
R
R
R
100 kHz (MIN.) 200 kHz (TYP.) 400 kHz (MAX.)
f
XX
1310.7 ms
2621.4 ms
5242.9 ms
1398.1 ms
163.8 ms
327.7 ms
655.4 ms
174.8 ms
349.5 ms
699.1 ms
41.0 ms
81.9 ms
10.9 ms
21.8 ms
43.7 ms
87.4 ms
= 24 MHz
f
XX
2621.47 ms
1310.7 ms
1048.6 ms
163.8 ms
327.7 ms
131.1 ms
262.1 ms
524.3 ms
655.4 ms
20.5 ms
41.0 ms
81.9 ms
8.19 ms
16.4 ms
32.8 ms
65.5 ms
= 32 MHz
f
XX
1310.7 ms
163.8 ms
327.7 ms
655.4 ms
104.9 ms
209.7 ms
419.4 ms
838.9 ms
10.2 ms
20.5 ms
41.0 ms
81.9 ms
13.1 ms
26.2 ms
52.2 ms
6.6 ms
= 40 MHz