
Section 7 I/O Ports
Rev. 1.00 Mar. 02, 2006 Page 185 of 798
REJ09B0255-0100
PG5/ExSCLA/ExIRQ13
The pin function is switched as shown below according to the combination of the IIC1AS and
IIC0AS bits in PTCNT1 and the PG5DDR bit. When the ISS13 bit in ISSR16 is set to 1 and
the IRQ13E bit in IER16 of the interrupt controller is set to 1, this pin can be used as the
ExIRQ13 input pin.
IIC1AS, IIC0AS
All 0
One bit is set as 1
PG5DDR
0
1
PG5 input pin
PG5 output pin
ExSDAA I/O pin
Pin Function
ExIRQ13 input pin
Note:
The output format for ExSCLA is NMOS output only, and direct bus drive is possible. When
this pin is used as the PG5 output pin, the output format is NMOS push-pull.
PG4/ExSDAA/ExIRQ12
The pin function is switched as shown below according to the combination of the IIC1AS and
IIC0AS bits in PTCNT1 and the PG4DDR bit. When the ISS12 bit in ISSR16 is set to 1 and
the IRQ12E bit in IER16 of the interrupt controller is set to 1, this pin can be used as the
ExIRQ12 input pin.
IIC1AS, IIC0AS
All 0
One bit is set as 1
PG4DDR
0
1
PG4 input pin
PG4 output pin
ExSDAA I/O pin
Pin Function
ExIRQ12 input pin
Note:
The output format for ExSDAA is NMOS output only, and direct bus drive is possible. When
this pin is used as the PG4 output pin, the output format is NMOS push-pull.
PG3/SCL2/ExIRQ11
The pin function is switched as shown below according to the combination of the ICE bit in
ICCR of IIC_2 and the PG3DDR bit. When the ISS11 bit in ISSR16 is set to 1 and the
IRQ10E bit in IER16 of the interrupt controller is set to 1, this pin can be used as the
ExIRQ11
input pin.
ICE
0
1
PG3DDR
0
1
PG3 input pin
PG3 output pin
SCL2 I/O pin
Pin Function
ExIRQ11 input pin
Note:
The output format for SCL2 is NMOS output only, and direct bus drive is possible. When
this pin is used as the PG3 output pin, the output format is NMOS push-pull.