Datasheet

Section 8 I/O Ports
Rev. 2.00 Aug. 20, 2008 Page 353 of 1198
REJ09B0403-0200
8.2.15 Port F
Port F is a 3-bit I/O port. Port F pins can also function as the PWMX output and EtherC control
I/O pins. Port F has the following registers.
• Port F data direction register (PFDDR)
• Port F output data register (PFODR)
• Port F input data register (PFPIN)
(1) Port F Data Direction Register (PFDDR)
The individual bits of PFDDR specify input or output for the port F pins. PFDDR is initialized
only by a system reset, and retains the value even if an internal reset signal of the WDT is
generated.
Bit Bit Name Initial Value R/W Description
7    Reserved
6 PF6DDR 0 W When set to 1, the corresponding pin functions as an
output port pin; when cleared to 0, functions as an
input port pin.
Since this register is allocated to the same address as
PFPIN, states of the port F pins are returned when
this register is read.
5 to 2   
Reserved
1 PF1DDR 0 W
0 PF0DDR 0 W
When set to 1, the corresponding pin functions as an
output port pin; when cleared to 0, functions as an
input port pin.
Since this register is allocated to the same address as
PFPIN, states of the port F pins are returned when
this register is read.