NEC V850ES/KE1+ User Manual page 558

CHAPTER 17 INTERRUPT/EXCEPTION PROCESSING FUNCTION
(3) External interrupt rising and falling edge specification registers 9H (INTR9H, INTF9H)
These are 8-bit registers that specify detection of the rising edge of the INTP4 to INTP6 pins.
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 INTF9n and
INTR9n bits = 00.
After reset: 00H
INTR9H INTR915
INTF9H INTF915
Remark
INTF9n
0
0
1
1
Remark n = 13 to 15: Control of INTP4 to INTP6 pins
558
R/W Address: INTR9H FFFFFC33H, INTF9H FFFFFC13H
INTR914 INTR913
INTP6 INTP5 INTP4
INTF914 INTF913
INTP6 INTP5 INTP4
For specification of the valid edge, refer to Table 17-5.
Table 17-5. INTP4 to INTP6 Pins Valid Edge Specification
INTR9n
0 No edge detection
1 Rising edge
0 Falling edge
1 Both edges
User's Manual U16896EJ2V0UD
0 0 0
0 0 0
Valid edge specification (n = 13 to 15)
0 0
0 0