Datasheet

Section 10 I/O Ports
Rev. 3.00 Mar 17, 2006 page 464 of 926
REJ09B0283-0300
10.5.3 Port 5 Register (PORT5)
PORT5 shows the pin states.
PORT5 cannot be modified.
Bit Bit Name Initial Value R/W Description
7 P57 Undefined
*
R
6 P56 Undefined
*
R
5 P55 Undefined
*
R
4 P54 Undefined
*
R
When bits P57 to P54 are read, the pin states are
always read from bits 7 to 4.
3 P53 Undefined
*
R
2 P52 Undefined
*
R
1 P51 Undefined
*
R
0 P50 Undefined
*
R
If bits P53 to P50 are read while P5DDR bits are set
to 1, the P5DR values are read. If a port 5 read is
performed while P5DDR bits are cleared to 0, the
pin states are read.
Note: * Determined by the states of pins P57 to P50.
10.5.4 Pin Functions
Port 5 pins also function as SCI I/Os, A/D converter inputs, A/D converter analog inputs, D/A
converter analog outputs, and interrupt inputs. The correspondence between the register
specification and the pin functions is shown below.
• P57/AN15/DA3/IRQ7
The pin function is switched as shown below according to bit ITS7 in ITSR.
IRQ7 interrupt input pin
*
AN15 input
Pin function
DA3 output
Note: * IRQ7 input when ITS7 = 0.