HD64F2168 Datasheet, PDF (280/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

8.13.4 Pin Functions
Port D is a multi-function port that functions as an LPC input/output and IIC_5 input/output. The
relationship between the register settings and pin functions is described below.
The LPC module is disabled when the LPC1E, LPC2E, and LPC3E bits in HICR0 of LPC are all
cleared to a 0.
• PD7/SDA5
The pin function is switched as shown below according to the combination of the ICE bit of
the IIC_5 ICCR and the PD7DDR.
ICE
PD7DDR
Pin Function
0
PD7 input pin
0
1
PD7 output pin
1

SDA5 input/output pin
• PD6/SCL5
The pin function is switched as shown below according to the combination of the ICE bit of
the IIC_5 ICCR and the PD6DDR.
ICE
PD6DDR
Pin Function
0
PD6 input pin
0
1
PD6 output pin
1

SCL5 input/output pin
• PD5/LPCPD
The pin function is switched as shown below according to the combination of LPC
enabled/disabled and the PD5DDR.
LPC
PD5DDR
Pin Function
0
PD5 input pin
Disabled
1
PD5 output pin
Enabled
0
LPCPD input pin
• PD4/CLKRUN
The pin function is switched as shown below according to the combination of LPC
enabled/disabled and the PD4DDR.
LPC
PD4DDR
Pin Function
0
PD4 input pin
Disabled
1
PD4 output pin
Enabled
0
CLKRUN input/output pin
Rev. 3.00, 03/04, page 240 of 830