Datasheet

Section 9 I/O Ports
Rev. 3.00 Sep. 14, 2006 Page 127 of 408
REJ09B0105-0300
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 P57 input pin 0
1 P57 output pin
1 X SCL I/O pin*
[Legend]
X: Don't care
Note: As the SCL output form is NMOS open-drain, direct bus drive is enabled.
* Supported only by the H8/36912 Group.
• P56/SDA pin
Register ICCR PCR5
Bit Name ICE PCR56 Pin Function
Setting value 0 P56 input pin
0
1 P56 output pin
1 X SDA I/O pin*
[Legend]
X: Don't care
Note: As the SDA output form is NMOS open-drain, direct bus drive is enabled.
* Supported only by the H8/36912 Group.
• 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