NEC V850E/RS1 User Manual page 116

(g) External interrupt falling edge specification register 0 (INTF0)
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 in 8-bit or 1-bit units.
Cautions: 1. When switching from the external interrupt function (alternate function) to the
Figure 4-9: External Interrupt Falling Edge Specification Register 0 (INTF0) Format
Symbol
INTF0
R/W
Remark:
116
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Chapter 4 Port Functions
port function, edge detection may occur. Therefore, set the port mode after set-
ting INTF0n = INTR0n bit = 0.
2. An on-chip circuit for eliminating noise through analog delay is provided for
external interrupt input.
7 6 5 4
0 INTF06 INTF05 0
R/W R/W R/W R/W
For details on valid edge specification, refer to Table 4-4, "Valid Edge Specification," on
page 117.
User's Manual U16702EE3V2UD00
3 2 1
0 0 0
R/W R/W R/W R/W
0 Address After reset
0 FFFFFC00H 00H