Renesas H8 Series Hardware Manual page 256

Section 8 I/O Ports
Port Data Register 5 (PDR5)
Bit 7
P5
Initial value 0
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.
Port Control Register 5 (PCR5)
Bit 7
PCR5
Initial value 0
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.
Rev. 7.00 Mar 10, 2005 page 214 of 652
REJ09B0042-0700
6 5
P5 P5
7 6 5
0 0
R/W R/W
6 5
PCR5 PCR5
7 6
0 0
W W
4 3
P5 P5
4 3
0 0
R/W R/W
to P5
7 0
4 3
PCR5 PCR5
5 4 3
0 0
W W
2 1
P5 P5
2 1
0 0
R/W R/W
. If port 5 is read while PCR5
2 1
PCR5 PCR5
2 1
0 0
W W
to P5 functions as an
7 0
0
P5
0
0
R/W
0
PCR5
0
0
W