Datasheet

Section 8 I/O Ports
Rev. 4.00 Sep 27, 2006 page 225 of 1130
REJ09B0327-0400
A7 (Output)
A6 (Output)
A5 (Output)
A4 (Output)
A3 (Output)
A2 (Output)
A1 (Output)
A0 (Output)
Port 1
When P1DDR = 1
and PWOERA = 0
P17 (Input)
P16 (Input)
P15 (Input)
P14 (Input)
P13 (Input)
P12 (Input)
P11 (Input)
P10 (Input)
When P1DDR = 0
PW7 (Output)
PW6 (Output)
PW5 (Output)
PW4 (Output)
PW3 (Output)
PW2 (Output)
PW1 (Output)
PW0 (Output)
When P1DDR = 1
and PWOERA = 1
Figure 8.3 Port 1 Pin Functions (Modes 2 and 3 (EXPE = 1))
Modes 2 and 3 (EXPE = 0)
In modes 2 and 3 (when EXPE = 0), port 1 pins function as PWM outputs or I/O ports, and input
or output can be specified on a bit-by-bit basis. When a bit in P1DDR is set to 1, the
corresponding pin functions as a PWM output or output port, and when cleared to 0, as an input
port.
The port 1 pin functions are shown in figure 8.4.
P17 (I/O)
P16 (I/O)
P15 (I/O)
P14 (I/O)
P13 (I/O)
P12 (I/O)
P11 (I/O)
P10 (I/O)
Port 1
P1n: Input pin when P1DDR = 0,
output pin when P1DDR = 1
and PWOERA = 0
PW7 (Output)
PW6 (Output)
PW5 (Output)
PW4 (Output)
PW3 (Output)
PW2 (Output)
PW1 (Output)
PW0 (Output)
When P1DDR = 1
and PWOERA = 1
Figure 8.4 Port 1 Pin Functions (Modes 2 and 3 (EXPE = 0))