Datasheet

Table Of Contents
Section 9 I/O Ports
Rev. 2.00 Jul. 04, 2007 Page 202 of 692
REJ09B0309-0200
9.13 Port F
Port F is an I/O port: its pins can also be configured to function as an external interrupt input pin,
SCI3_1 I/O pins, and timer G input pin. Figure 9.13 shows the pin configuration.
PF1(/SCK31/IRQ4)
PF0/TMIG
PF3(/TXD31/IrTXD)
PF2(/RXD31/IrRXD)
Port F
Figure 9.13 Port F Pin Configuration
Port F has the following registers.
Port data register F (PDRF)
Port control register F (PCRF)
Port mode register F (PMRF)
9.13.1 Port Data Register F (PDRF)
PDRF is a register that stores data of port F.
Bit Bit Name
Initial
Value
R/W Description
7 to 5 All 1 Reserved
These bits are always read as 1 and cannot be
modified.
4 Reserved
The write value should always be 0.
3
2
1
0
PF3
PF2
PF1
PF0
0
0
0
0
R/W
R/W
R/W
R/W
If port F is read while PCRF bits are set to 1, the values
stored in PDRF are read, regardless of the actual pin
states. If port F is read while PCRF bits are cleared to
0, the pin states are read.