HD64F38024HV Datasheet, PDF (608/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Appendix B Internal I/O Registers
PMR2—Port Mode Register 2
Bit
7
⎯
Initial value
1
Read/Write
⎯
6
5
4
⎯
POF1
⎯
1
0
1
⎯
R/W
⎯
H'C9
I/O Port
3
2
1
0
⎯ WDCKS NCS IRQ0
1
0
0
0
⎯
R/W
R/W R/W
P4₃/IRQ0 Pin Function Switch
0 Functions as P4₃ I/O pin
1 Functions as IRQ₀ 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
P3₅ Pin Output Buffer PMOS On/Off Control
0 CMOS output
1 NMOS open-drain output
Note: * On the H8/38124 Group the clock source can be selected using the TMW register.
Rev. 8.00 Mar. 09, 2010 Page 586 of 658
REJ09B0042-0800