HD64F36024FX Datasheet, PDF (124/386 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 I/O Ports
9.1.1 Port Mode Register 1 (PMR1)
PMR1 switches the functions of pins in port 1, port 2, and port 7.
Initial
Bit
Bit Name Value R/W Description
7
IRQ3
0
R/W P17/IRQ3/TRGV Pin Function Switch
This bit selects whether pin P17/IRQ3/TRGV is used as
P17 or as IRQ3/TRGV.
0: General I/O port
1: IRQ3/TRGV input pin
6, 5 
All 0

Reserved
These bits are always read as 0.
4
IRQ0
0
R/W P14/IRQ0 Pin Function Switch
This bit selects whether pin P14/IRQ0 is used as P14 or
as IRQ0.
0: General I/O port
1: IRQ0 input pin
3
TXD2
0
R/W P72/TXD_2 Pin Function Switch
This bit selects whether pin P72/TXD_2 is used as P72 or
as TXD_2.
0: General I/O port
1: TXD_2 output pin
2

0
R/W Reserved
This bit must always be cleared to 0 (setting to 1 is
disabled).
1
TXD
0
R/W P22/TXD Pin Function Switch
This bit selects whether pin P22/TXD is used as P22 or
as TXD.
0: General I/O port
1: TXD output pin
0

0

Reserved
This bit is always read as 0.
Rev. 4.00 Sep. 23, 2005 Page 96 of 354
REJ09B0025-0400