HD64F2149YV datasheet(235/1075 Pages) RENESAS

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Section 8 I/O Ports

Rev. 3.00 Jan 18, 2006 page 207 of 1044

REJ09B0280-0300

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.

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))

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