Datasheet

Section 10 I/O Ports
Rev. 3.00 Mar 17, 2006 page 479 of 926
REJ09B0283-0300
10.8.2 Port 8 Data Register (P8DR)
P8DR stores output data for the port 8 pins.
Bit Bit Name Initial Value R/W Description
7, 6 — All 0 — Reserved
These bits are always read as 0 and cannot be
modified.
5 P85DR 0 R/W
4 P84DR 0 R/W
3 P83DR 0 R/W
2 P82DR 0 R/W
1 P81DR 0 R/W
0 P80DR 0 R/W
Output data for a pin is stored when the pin function
is specified to a general purpose I/O.
10.8.3 Port 8 Register (PORT8)
PORT8 shows the pin states.
PORT8 cannot be modified.
Bit Bit Name Initial Value R/W Description
7, 6 — Undefined — Reserved
These bits are reserved, if read they will return an
undefined value.
5 P85 Undefined
*
R
4 P84 Undefined
*
R
3 P83 Undefined
*
R
2 P82 Undefined
*
R
1 P81 Undefined
*
R
0 P80 Undefined
*
R
If a port 8 read is performed while P8DDR bits are
set to 1, the P8DR values are read. If a port 8 read
is performed while P8DDR bits are cleared to 0, the
pin states are read.
Note: * Determined by the states of pins P85 to P80.