CHAPTER 17 INTERRUPT/EXCEPTION PROCESSING FUNCTION
User’s Manual U16896EJ2V0UD
557
(2) External interrupt rising and falling edge specification registers 3 (INTR3, INTF3)
These are 8-bit registers that specify detection of the rising and falling edges of the INTP7 pin.
These registers can be read or written in 8-bit or 1-bit units.
Reset sets these registers to 00H.
Caution When switching to the port function from the external interrupt function (alternate function),
edge detection may be performed. Therefore, set the port mode after setting the INTF31 and
INTR31 bits = 00.
0
INTR3
0
0
0
0
0
INTR31
0
After reset: 00H R/W Address: INTR3 FFFFFC26H, INTF3 FFFFFC06H
INTP7
INTP7
0
INTF3
0
0
0
0
0
INTF31
0
Remark
For specification of the valid edge, refer to
Table 17-4
.
Table 17-4. INTP7 Pin Valid Edge Specification
INTF31
INTR31
Valid edge specification
0
0
No edge detection
0 1
Rising
edge
1 0
Falling
edge
1 1
Both
edges
Содержание V850ES/KE1+
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