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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
7
6
PF6DDR
5 to 2
1
PF1DDR
0
PF0DDR
Initial Value
R/W
0
W
0
W
0
W
Description
Reserved
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.
Reserved
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.
Rev. 1.00 Mar. 12, 2008 Page 351 of 1178
Section 8 I/O Ports
REJ09B0403-0100
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