Table of Contents
Advertisement
1. Port data register 5 (PDR5)
Bit
P5
Initial value
Read/Write
R/W
PDR5 is an 8-bit register that stores data for port 5 pins P5
bits are set to 1, the values stored in PDR5 are read, regardless of the actual pin states. If port 5 is
read while PCR5 bits are cleared to 0, the pin states are read.
Upon reset, PDR5 is initialized to H'00.
2. Port control register 5 (PCR5)
Bit
PCR5
Initial value
Read/Write
W
PCR5 is an 8-bit register for controlling whether each of the port 5 pins P5
input pin or output pin. Setting a PCR5 bit to 1 makes the corresponding pin an output pin, while
clearing the bit to 0 makes the pin an input pin. PCR5 and PDR5 settings are valid when the
corresponding pins are designated for general-purpose input/output by PMR5 and bits SGS3 to
SGS0 in LPCR.
Upon reset, PCR5 is initialized to H'00.
PCR5 is a write-only register, which is always read as all 1s.
3. Port pull-up control register 5 (PUCR5)
Bit
PUCR5
Initial value
Read/Write
R/W
PUCR5 controls whether the MOS pull-up of each of port 5 pins P5
PCR5 bit is cleared to 0, setting the corresponding PUCR5 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, PUCR5 is initialized to H'00.
154
7
6
5
P5
P5
7
6
0
0
0
R/W
R/W
7
6
5
PCR5
PCR5
7
6
0
0
0
W
W
7
6
5
PUCR5
PUCR5
7
6
0
0
0
R/W
R/W
4
3
P5
P5
5
4
3
0
0
R/W
R/W
to P5
7
4
3
PCR5
PCR5
5
4
0
0
W
W
4
3
PUCR5
PUCR5
5
4
0
0
R/W
R/W
2
1
P5
P5
2
1
0
0
R/W
R/W
. If port 5 is read while PCR5
0
2
1
PCR5
PCR5
3
2
1
0
0
W
W
to P5
functions as an
7
0
2
1
PUCR5
PUCR5
3
2
1
0
0
R/W
R/W
to P5
is on or off. When a
7
0
0
P5
0
0
R/W
0
PCR5
0
0
W
0
PUCR5
0
0
R/W
Advertisement
Table of Contents
