Datasheet

Section 8 I/O Ports
Rev. 4.00 Sep 27, 2006 page 224 of 1130
REJ09B0327-0400
8.2.3 Pin Functions in Each Mode
Mode 1
In mode 1, port 1 pins automatically function as address outputs. The port 1 pin functions are
shown in figure 8.2.
A7 (Output)
A6 (Output)
A5 (Output)
A4 (Output)
A3 (Output)
A2 (Output)
A1 (Output)
A0 (Output)
Port 1
Figure 8.2 Port 1 Pin Functions (Mode 1)
Modes 2 and 3 (EXPE = 1)
In modes 2 and 3 (when EXPE = 1), port 1 pins function as address outputs, PWM outputs, or
input 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 an address output or PWM output, and when cleared to 0,
as an input port.
The port 1 pin functions are shown in figure 8.3.