Port Control Register 8 (Pcr8); Port Data Register 8 (Pdr8) - Renesas H8 Series Hardware Manual

9.5.1

Port Control Register 8 (PCR8)

PCR8 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 8.
Bit Bit Name
7 PCR87
6 PCR86
5 PCR85
4 PCR84
3 PCR83
2 PCR82
1 PCR81
0 PCR80
9.5.2

Port Data Register 8 (PDR8)

PDR8 is a general I/O port data register of port 8.
Bit Bit Name
7 P87
6 P86
5 P85
4 P84
3 P83
2 P82
1 P81
0 P80
Initial
Value R/W Description
0 W When each of the port 8 pins P87 to P80 functions as an
general I/O port, setting a PCR8 bit to 1 makes the
0 W
corresponding pin an output port, while clearing the bit to
0 W
0 makes the pin an input port.
0 W
0 W
0 W
0 W
0 W
Initial
Value R/W Description
0 R/W PDR8 stores output data for port 8 pins.
0 R/W If PDR8 is read while PCR8 bits are set to 1, the value
stored in PDR8 is read. If PDR8 is read while PCR8 bits
0 R/W
are cleared to 0, the pin states are read regardless of the
0 R/W
value stored in PDR8.
0 R/W
0 R/W
0 R/W
0 R/W
Section 9 I/O Ports
Rev. 1.00 Aug. 28, 2006 Page 135 of 400
REJ09B0268-0100