Hitachi H8/3937 Series Hardware Manual page 468

PMR1—Port mode register 1
Bit 7
IRQ3
Initial value 0
Read/Write R/W
P1
6
0 Functions as P1
1 Functions as IRQ
P1 /IRQ /TMIF pin function switch
7 3
0 Functions as P1
1 Functions as IRQ
456
6 5 4
IRQ2 IRQ1 IRQ4
0 0 0
R/W R/W R/W
P1 /IRQ /ADTRG pin function switch
4 4
0 Functions as P1
1 Functions as IRQ
P1 /IRQ /TMIC pin function switch
5 1
0 Functions as P1
5
1 Functions as IRQ
/IRQ pin function switch
2
I/O pin
6
input pin
2
I/O pin
7
/TMIF input pin
3
3 2 1
TMIG TMOFH TMOFL
0 0 0
R/W R/W R/W
P1 /TMOFL pin function switch
1
0 Functions as P1
1 Functions as TMOFL output pin
P1 /TMOFH pin function switch
2
0 Functions as P1
1 Functions as TMOFH output pin
P1 /TMIG pin function switch
3
0 Functions as P1 I/O pin
3
1 Functions as TMIG input pin
I/O pin
4
/ADTRG input pin
4
I/O pin
/TMIC input pin
1
H'C8 I/O port
0
TMOW
0
R/W
P1 /TMOW pin function switch
0
0 Functions as P1 I/O pin
0
1 Functions as TMOW output pin
I/O pin
1
I/O pin
2