INTEGRATED CIRCUITS
DATA SHEET
PCF8584
I2C-bus controller
Product specification
Supersedes data of 1997 Mar 19
File under Integrated Circuits, IC12
1997 Oct 21
Philips Semiconductors
Product specification
I2C-bus controller
1
PCF8584
FEATURES
• Parallel-bus to
2
I2C-bus
protocol converter and interface
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.
• Compatible with most parallel-bus
microcontrollers/microprocessors including 8049, 8051,
6800, 68000 and Z80
• 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.
• 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.
3
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
PCF8584P
DIP20
plastic dual in-line package; 20 leads (300 mil)
SOT146-1
PCF8584T
SO20
plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
1997 Oct 21
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