Rev. 1.0, 03/01, page 90 of 280
9.1.1
Port Mode Register 1(PMR1)
PMR1 switches the functions of pins in port 1 and port 2.
Bit
Bit Name
Initial 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: P17 I/O port
1:
IRQ3
/TRGV input pin
6
5
−
−
0
0
−
−
Reserved
These bits are always read as 0, and cannot be modified.
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: P14 I/O port
1:
IRQ0
input pin
3
−
1
−
Reserved
This bit is always read as 1 and cannnot be modified.
2
−
0
−
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: P22 I/O port
1: TXD output pin
0
−
0
−
Reserved
These bits are always read as 0, and cannot be modified.
Summary of Contents for H8/3670F-ZTAT HD64F3670
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