HD64F3039F18 Datasheet, PDF (191/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 7 I/O Ports
7.8.3 Pin Functions
The port 8 pins are also used for IRQ₁ and IRQ₀. Table 7.12 describes the selection of pin
functions.
Table 7.12 Port 8 Pin Functions
Pin
P8 /IRQ
1
1
Pin Functions and Selection Method
Bit P8 DDR selects the pin function as follows
1
P8 DDR
0
1
1
Modes 1, 3, and 5
Pin function
P8₁ input
Illegal setting
IRQ₁ input
Modes 6 and 7
P8₁ output
P8 /IRQ
0
0
Bit P8 DDR selects the pin function as follows
0
P8₀DDR
0
Pin function
P8₀ input
IRQ₀ input
1
P8₀ output
Rev.3.00 Mar. 26, 2007 Page 167 of 682
REJ09B0353-0300