HD64F2168 Datasheet, PDF (260/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

• P83/ExIRQ11/SDA1
The pin function is switched as shown below according to the combination of the ICE bit in
ICCR of IIC_1 and the P83DDR bit.
When the ISS11 bit in ISSR16 of the interrupt controller is set to 1, this pin can be used as the
ExIRQ11 input pin. To use this pin as the ExIRQ11 input pin, clear the P83DDR bit to 0.
When this pin is used as the P83 output pin, the output format is NMOS push-pull output. The
output format for SDA1 is NMOS open-drain output, and direct bus drive is possible.
ICE
P83DDR
Pin function
0
0
P83 input pin
ExIRQ11 input pin
1
P83 output pin
1

SDA1 input/output pin
• P82/ExIRQ10/SCL1
The pin function is switched as shown below according to the combination of the ICE bit in
ICCR of IIC_1 and the P82DDR bit.
When the ISS10 bit in ISSR16 of the interrupt controller is set to 1, this pin can be used as the
ExIRQ10 input pin. To use this pin as the ExIRQ10 input pin, clear the P82DDR bit to 0.
When this pin is used as the P82 output pin, the output format is NMOS push-pull output. The
output format for SCL1 is NMOS open-drain output, and direct bus drive is possible.
ICE
P82DDR
Pin function
0
0
P82 input pin
ExIRQ10 input pin
1
P82 output pin
1

SCL1 input/output pin
• P81/ExIRQ9/SDA0
The pin function is switched as shown below according to the combination of the ICE bit in
ICCR of IIC_0 and the P81DDR bit.
When the ISS9 bit in ISSR16 of the interrupt controller is set to 1, this pin can be used as the
ExIRQ9 input pin. To use this pin as the ExIRQ9 input pin, clear the P81DDR bit to 0.
When this pin is used as the P81 output pin, the output format is NMOS push-pull output. The
output format for SDA0 is NMOS open-drain output, and direct bus drive is possible.
ICE
P81DDR
Pin function
0
0
P81 input pin
ExIRQ9 input pin
1
P81 output pin
1

SDA0 input/output pin
Rev. 3.00, 03/04, page 220 of 830