hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 265

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

Port Data Register 7 (PDR7)
PDR7 is an 8-bit register that stores data for port 7 pins P7
bits are set to 1, the values stored in PDR7 are read, regardless of the actual pin states. If port 7 is
read while PCR7 bits are cleared to 0, the pin states are read.
Upon reset, PDR7 is initialized to H'00.
Port Control Register 7 (PCR7)
PCR7 is an 8-bit register for controlling whether each of the port 7 pins P7
input pin or output pin. Setting a PCR7 bit to 1 makes the corresponding pin an output pin, while
clearing the bit to 0 makes the pin an input pin. PCR7 and PDR7 settings are valid when the
corresponding pins are designated for general-purpose input/output by bits SGS3 to SGS0 in
LPCR.
Upon reset, PCR7 is initialized to H'00.
PCR7 is a write-only register, which is always read as all 1s.
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
PCR7
R/W
P7
W
7
0
7
0
7
7
PCR7
R/W
P7
W
6
0
6
0
6
6
PCR7
R/W
P7
W
5
0
5
0
5
5
PCR7
R/W
P7
W
4
0
4
0
4
4
Rev. 7.00 Mar 10, 2005 page 223 of 652
PCR7
7
R/W
P7
to P7
W
3
0
3
0
3
3
0
. If port 7 is read while PCR7
PCR7
R/W
P7
W
2
0
2
0
2
2
7
to P7
PCR7
Section 8 I/O Ports
R/W
P7
REJ09B0042-0700
W
1
0
1
0
0
1
functions as an
1
PCR7
R/W
P7
W
0
0
0
0
0
0