HD6473847RHV Datasheet, PDF (217/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 8 I/O Ports
8.1.5 Port Mode Register 2 (PMR2)
PMR2 controls the PMOS on/off state for the P35 pin, selects a pin function for the P43/IRQ0 pin,
and selects a clock of the watchdog timer.
Initial
Bit
Bit Name Value R/W Description
7, 6
⎯
All 1
⎯
Reserved
These bits are always read as 1 and cannot be
modified.
5
POF1
0
R/W P35 Pin PMOS Control
This bit controls the on/off state of the PMOS of the P35
pin output buffer.
0: CMOS output
1: NMOS open-drain output
4, 3
⎯
All 1
⎯
Reserved
These bits are always read as 1 and cannot be
modified.
2
WDCKS 0
R/W Watchdog Timer Source Clock Select
This bit selects the input clock for the watchdog timer.
Note that this bit is implemented differently on the
H8/38004, H8/38002S Group and on H8/38104 Group.
H8/38004, H8/38002S Group:
0: φ/8,192
1: φw/32
H8/38104 Group: 0: Clock specified by timer mode
register W (TMW)*
1: φw/32
Note: This bit is reserved and only 0 can be written in
the H8/3802 Group.
1
⎯
⎯
W
Reserved
The write value should always be 0.
0
IRQ0
0
R/W P43/IRQ0 Pin Function Switch
This bit selects whether pin P43/IRQ0 is used as P43 or
as IRQ0.
0: P43 input pin
1: IRQ0 input pin
Note: * See section 9.5, Watchdog Timer, for details.
Rev. 7.00 Mar. 08, 2010 Page 185 of 510
REJ09B0024-0700