HD6432142 datasheet(269/1177 Pages) RENESAS

269 / 1177 page

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))

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