hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 256

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 I/O Ports
Port Data Register 5 (PDR5)
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)
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
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
PCR5
R/W
P5
7
0
W
7
0
7
7
PCR5
R/W
P5
6
0
W
6
0
6
6
PCR5
R/W
P5
W
5
0
5
0
5
5
PCR5
R/W
P5
W
4
0
4
0
4
4
PCR5
7
to P5
R/W
W
P5
3
0
3
0
3
3
0
. If port 5 is read while PCR5
PCR5
W
R/W
2
0
P5
2
0
2
2
7
to P5
PCR5
W
R/W
1
0
0
P5
1
0
functions as an
1
1
PCR5
W
0
0
R/W
P5
0
0
0
0