Datasheet

Section 8 I/O Ports
Rev.7.00 Dec. 24, 2008 Page 224 of 698
REJ09B0074-0700
8.2.2 Port 3 Data Register (P3DR)
P3DR stores output data for the port 3 pins.
Bit Bit Name Initial Value R/W Description
7 ⎯ Undefined ⎯ Reserved
This bit is undefined and cannot be modified.
6 P36DR 0 R/W Stores output data for a pin that functions as a general
output port.
5 to
3
⎯ Undefined ⎯ Reserved
These bits are undefined and cannot be modified.
2
1
0
P32DR
P31DR
P30DR
0
0
0
R/W
R/W
R/W
Store output data for a pin that functions as a general
output port.
8.2.3 Port 3 Register (PORT3)
PORT3 indicates the pin states of the port 3.
Bit Bit Name Initial Value R/W Description
7 ⎯ Undefined ⎯ Reserved
This bit is undefined.
6 P36 ⎯* R If the port 3 is read while P3DDR bits are set to 1, the
P3DR value is read. If the port 3 is read while P3DDR bits
are cleared to 0, the pin states are read.
5 to
3
⎯ Undefined ⎯ Reserved
These bits are undefined.
2
1
0
P32
P31
P30
⎯*
⎯*
⎯*
R
R
R
If the port 3 is read while P3DDR bits are set to 1, the
P3DR value is read. If the port 3 is read while P3DDR bits
are cleared to 0, the pin states are read.
Note: * Determined by the states of pins P36 and P32 to P30.