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PCF8584

I2C-bus controller

Philips Electronics 

Philips Semiconductors

I2C-bus controller

Product specification

PCF8584

1 FEATURES

• Parallel-bus to I2C-bus protocol converter and interface

• Compatible with most parallel-bus

microcontrollers/microprocessors including 8049, 8051,

6800, 68000 and Z80

• Both master and slave functions

• Automatic detection and adaption to bus interface type

• Programmable interrupt vector

• Multi-master capability

• I2C-bus monitor mode

• Long-distance mode (4-wire)

• Operating supply voltage 4.5 to 5.5 V

• Operating temperature range: −40 to +85 °C.

2 GENERAL DESCRIPTION

The PCF8584 is an integrated circuit designed in CMOS

technology which serves as an interface between most

standard parallel-bus microcontrollers/microprocessors

and the serial I2C-bus. The PCF8584 provides both master

and slave functions.

Communication with the I2C-bus is carried out on a

byte-wise basis using interrupt or polled handshake.

It controls all the I2C-bus specific sequences, protocol,

arbitration and timing. The PCF8584 allows parallel-bus

systems to communicate bidirectionally with the I2C-bus.

3 ORDERING INFORMATION

TYPE

NUMBER

PCF8584P

PCF8584T

NAME

DIP20

SO20

PACKAGE

DESCRIPTION

plastic dual in-line package; 20 leads (300 mil)

plastic small outline package; 20 leads; body width 7.5 mm

VERSION

SOT146-1

SOT163-1

1997 Oct 21

3

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