Appendix B Internal I/O Registers
Rev. 7.00 Mar 10, 2005 page 590 of 652
REJ09B0042-0700
PMR2—Port Mode Register 2 H'C9 I/O Port
Bit
Initial value
Read/Write
Note: * On the H8/38124 Group the clock source can be selected using the TMW register.
7

1

6

1

5
POF1
0
R/W
4

1

3

1

0
IRQ0
0
R/W
2
WDCKS
0
R/W
1
NCS
0
R/W
P4
3
/IRQ0 Pin Function Switch
0 Functions as P4
3
I/O pin
1 Functions as IRQ
0
input pin
TMIG Noise Canceller Select
0 Noise cancellation function not used
1 Noise cancellation function used
Watchdog Timer Switch
0 Selects φ8192
*
1 Selects φ
W
/32
P3
5
Pin Output Buffer PMOS On/Off Control
0 CMOS output
1 NMOS open-drain output
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