141
Port Data Register 6 (PDR6)
Bit
7
6
5
4
3
2
1
0
P6
7
P6
6
P6
5
P6
4
P6
3
P6
2
P6
1
P6
0
Initial value
0
0
0
0
0
0
0
0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PDR6 is an 8-bit register that stores data for port 6 pins P6
7
to P6
0
. If port 6 is read while PCR6
bits are set to 1, the values stored in PDR6 are directly read, regardless of the actual pin states. If
port 6 is read while PCR6 bits are cleared to 0, the pin states are read.
Upon reset, PDR6 is initialized to H'00.
Port Control Register 6 (PCR6)
Bit
7
6
5
4
3
2
1
0
PCR6
7
PCR6
6
PCR6
5
PCR6
4
PCR6
3
PCR6
2
PCR6
1
PCR6
0
Initial value
0
0
0
0
0
0
0
0
Read/Write
W
W
W
W
W
W
W
W
PCR6 is an 8-bit register for controlling whether each of the port 6 pins P6
7
to P6
0
functions as an
input pin or output pin. Setting a PCR6 bit to 1 makes the corresponding pin an output pin, while
clearing the bit to 0 makes the pin an input pin.
Upon reset, PCR6 is initialized to H'00.
PCR6 is a write-only register. All bits are read as 1.
Port Pull-Up Control Register 6 (PUCR6)
Bit
7
6
5
4
3
2
1
0
PUCR6
7
PUCR6
6
PUCR6
5
PUCR6
4
PUCR6
3
PUCR6
2
PUCR6
1
PUCR6
0
Initial value
0
0
0
0
0
0
0
0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PUCR6 controls whether the MOS pull-up of each port 6 pin is on or off. When a PCR6 bit is
cleared to 0, setting the corresponding PUCR6 bit to 1 turns on the MOS pull-up for the
corresponding pin, while clearing the bit to 0 turns off the MOS pull-up.
Upon reset, PUCR6 is initialized to H'00.