Datasheet

Section 9 I/O Ports
Rev. 6.00 Mar. 24, 2006 Page 128 of 412
REJ09B0142-0600
9.3.5 Pin Functions
The correspondence between the register specification and the port functions is shown below.
• P57/SCL Pin
Register ICCR PCR5
Bit Name ICE PCR57 Pin Function
Setting Value 0 0 P57 input pin
1 P57 output pin
1 X SCL I/O pin
[Legend]
X: Don't care.
SCL performs the NMOS open-drain output, that enables a direct bus drive.
• P56/SDA Pin
Register ICCR PCR5
Bit Name ICE PCR56 Pin Function
Setting Value 0 0 P56 input pin
1 P56 output pin
1 X SDA I/O pin
[Legend]
X: Don't care.
SDA performs the NMOS open-drain output, that enables a direct bus drive.
• P55/WKP5/ADTRG Pin
Register PMR5 PCR5
Bit Name WKP5 PCR55 Pin Function
Setting Value 0 0 P55 input pin
1 P55 output pin
1 X WKP5/ADTRG input pin
[Legend]
X: Don't care.