Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 23 INTERRUPT/EXCEPTION PROCESSING FUNCTION

R01UH0042EJ0500 Rev.5.00 Page 1298 of 1513

Aug 12, 2011

(4) External interrupt falling, rising edge specification registers 4 (INTF4, INTR4)

The INTF4 and INTR4 registers are 8-bit registers that specify detection of the falling and rising edges of the

external interrupt pin (INTP10).

These registers can be read or written in 8-bit or 1-bit units.

Reset sets these registers to 00H.

Caution When the function is changed from the external interrupt function (alternate function) to the port

function, an edge may be detected. Therefore, set the INTF42 and INTR42 bits to 00, and then set

the port mode.

0INTF4 0000INTF42 0 0

After reset: 00H R/W Address: INTF4 FFFFFC08H, INTR4 FFFFFC28H

0INTR4 0000INTR42 0 0

INTP10

76543210

Remark For the valid edge specification combinations, see Table 23-8.

Table 23-8. Valid Edge Specification

INTF42 INTR42 Valid Edge Specification

0 0 No edge detected

0 1 Rising edge

1 0 Falling edge

1 1 Both rising and falling edges

Caution Be sure to set the INTF42 and INTR42 bits to 00 if the corresponding pin is not used as the

INTP10 pin.