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(i) External interrupt falling edge specification register 3 (INTF3)
This is an 8-bit register used to specify detection of the falling edge for the external interrupt pin.
This register can be read and written only in 16-bit units.
Cautions: 1. When switching from the external interrupt function (alternate function) to the
Symbol
INTF3
R/W
Remark:
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port function, edge detection may occur. Therefore, set the port mode after set-
ting INTF3 = INTR3 bit = 0.
2. An on-chip circuit for eliminating noise through analog delay is provided for
external interrupt input.
Figure 4-27: External Interrupt Falling Edge Specification Register 3 (INTF3) Format
7
6
5
INTF37
0
0
R/W
R/W
R/W
For details on valid edge specification, refer to Table 4-6.
User's Manual U16702EE3V2UD00
Chapter 4 Port Functions
4
3
2
0
0
0
INTF31
R/W
R/W
R/W
R/W
1
0
Address
After reset
0
FFFFFC06H
R/W
0000H
131
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