Datasheet

Section 9 I/O Ports
Rev.5.00 Nov. 02, 2005 Page 127 of 418
REJ09B0028-0500
9.5.2 Port Data Register 8 (PDR8)
PDR8 is a general I/O port data register of port 8.
Bit Bit Name
Initial
Value R/W Description
7
6
5
4
3
2
1
0
P87
P86
P85
P84
P83
P82
P81
P80
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PDR8 stores output data for port 8 pins.
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
are cleared to 0, the pin states are read regardless of the
value stored in PDR8.
9.5.3 Pin Functions
The correspondence between the register specification and the port functions is shown below.
P87 pin
Register PCR8
Bit Name PCR87 Pin Function
Setting
Value
0 P87 input pin
1 P87 output pin
P86 pin
Register PCR8
Bit Name PCR86 Pin Function
Setting
Value
0 P86 input pin
1 P86 output pin