HD64F2168 Datasheet, PDF (276/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

8.12.3 Port C Input Data Register (PCPIN)
PCPIN indicates the pin states of port C.
Bit Bit Name Initial Value R/W Description
7
PC7PIN Undefined*¹ R When this register is read, the pin state is read.
6
PC6 PIN Undefined*¹ R This register is assigned to the same address as that
5
PC5 PIN Undefined*¹ R
of PCDDR. When this register is written to, data is
written to PCDDR and the port C setting is then
4
PC4 PIN Undefined*¹ R
changed.
3
PC3 PIN Undefined*¹ R
2
PC2 PIN Undefined*¹ R
1
PC1 PIN Undefined*¹ R
0
PC0 PIN Undefined*¹ R
Note: The initial values are determined in accordance with the states of PC7 to PC0 pins.
8.12.4 Pin Functions
Port C is capable of functioning as the input and output of IIC_2, IIC_3, and IIC_4, and the
PWMX output. The relationship between the register settings and pin function is described below.
• PC7/PWX3
The pin function is switched as shown below according to the combination of the OEB bit of
the 14-bit PWMX DACR and the PC7DDR.
OEB
PC7DDR
Pin Function
0
PC7 input pin
0
1
PC7 output pin
1

PWX3 output pin
• PC6/PWX2
The pin function is switched as shown below according to the combination of the OEA bit of
the 14-bit PWMX DACR and the PC6DDR.
OEA
PC6DDR
Pin Function
0
PC6 input pin
0
1
PC6 output pin
1

PWX2 output pin
Rev. 3.00, 03/04, page 236 of 830