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Section 8 I/O Ports
(4)
Pin Functions
Port F is a 7-bit I/O port. Port F pins can also function as the PWM output and EtherC control
input/output pins. The relationship between the register settings and the pin function is shown
below.
• PF6/ExPWX2/RS14
The pin function is switched as shown below according to the combination of the OEA bit in
DACR and the PWMXS bit in PTCNT0 of PWMX_1 and the PF6DDR bit.
PF6DDR
PWMXS
OEA
Pin function
[Legend]
X: Don't care.
• PF5/RS13
The pin function is switched as shown below according to the PF5DDR bit.
PF5DDR
Pin function
• PF4/RS12
The pin function is switched as shown below according to the PF4DDR bit.
PF4DDR
Pin function
• PF3/ExPWX3/RS11
The pin function is switched as shown below according to the combination of the OEB bit in
DACR and the PWMXS bit in PTCNT0 of PWMX_1 and the PF3DDR bit.
PF3DDR
PWMXS
OEA
Pin function
[Legend]
X: Don't care.
Rev. 1.00 Mar. 12, 2008 Page 268 of 1178
REJ09B0403-0100
0
0
1
X
0
PF6 input pin
PF5 input pin
PF4 input pin
0
0
1
X
0
PF3 input pin
1
0
X
PF6 output pin
0
0
1
0
X
PF3 output pin
X
1
1
0
ExPWX2 output pin
1
PF5 output pin
1
PF4 output pin
X
1
1
0
ExPWX3 output pin
1
1
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