Table of Contents
Advertisement
9.4.3
Port Data Register 5 (PDR5)
Bit
7
P57
Initial value
0
Read/Write
R/W
PDR5 is an 8-bit register that stores data for port 5 pins P57 to P50. If port 5 is read while PCR5
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.
9.4.4
Port Control Register 5 (PCR5)
Bit
7
PCR57
Initial value
0
Read/Write
W
PCR5 is an 8-bit register for controlling whether each of the port 5 pins P57 to P50 functions as an
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.
Upon reset, PCR5 is initialized to H'00.
PCR5 is a write-only register, which is always read as all 1s.
150
6
5
P56
P55
0
0
R/W
R/W
6
5
PCR56
PCR55
0
0
W
W
4
3
P54
P53
0
0
R/W
R/W
4
3
PCR54
PCR53
0
0
W
W
2
1
P52
P51
0
0
R/W
R/W
2
1
PCR52
PCR51
0
0
W
W
0
P50
0
R/W
0
PCR50
0
W
Advertisement
Table of Contents
