PCA9564_06 datasheet(2/32 Pages) PHILIPS

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Philips Semiconductors

Product data sheet

PCA9564

Parallel bus to I2C-bus controller

2006 Sep 01

FEATURES

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

• Both master and slave functions

• Multi-master capability

• Internal oscillator reduces external components

• Operating supply voltage 2.3 V to 3.6 V

• 5 V tolerant I/Os

• Standard and fast mode I2C capable and compatible with SMBus

• ESD protection exceeds 2000 V HEM per JESD22-A114,

200 V MM per JESD22-A115, and 1000 V CDM per

JESD22-C101

• Latch-up testing is done to JEDEC Standard JESD78 which

exceed 100 mA.

• Packages offered: DIP20, SO20, TSSOP20, HVQFN20

APPLICATIONS

• Add I2C-bus port to controllers/processors that do not have one

• Add additional I2C-bus ports to controllers/processors that need

multiple I2C-bus ports

• Higher frequency, lower voltage migration path for the PCF8584

• Converts 8 bits of parallel data to serial data stream to prevent

having to run a large number of traces across the entire PC board

DESCRIPTION

The PCA9564 is an integrated circuit designed in CMOS technology

that serves as an interface between most standard parallel-bus

microcontrollers/microprocessors and the serial I2C-bus and allows

the parallel bus system to communicate bi-directionally with the

I2C-bus. The PCA9564 can operate as a master or a slave and can

be a transmitter or receiver. Communication with the I2C-bus is

carried out on a byte-wise basis using interrupt or polled handshake.

The PCA9564 controls all the I2C-bus specific sequences, protocol,

arbitration and timing with no external timing element required.

The PCA9564 is similar to the PCF8584 but operates at lower

voltages and higher I

@C frequencies. Other enhancements

requested by design engineers have also been incorporated.

Characteristic

PCA9564

PCF8584

Comments

Voltage range

2.3–3.6 V

4.5–5.5 V

PCA9564 is 5 V

tolerant

Maximum

master mode

I2C frequency

360 kHz

90 kHz

Faster I2C interface

Maximum slave

mode I2C

frequency

400 kHz

100 kHz

Faster I2C interface

Clock source

Internal

External

Less expensive and

more flexible with

internal oscillator

Parallel

interface

Fast

50 MHz

Slow

Compatible with

faster processors

While the PCF8584 supported most parallel-bus microcontrollers/

microprocessors including the Intel 8049/8051, Motorola

6800/68000 and the Zilog Z80, the PCA9564 has been designed to

be very similar to the Philips standard 80C51 microcontroller I2C

hardware so the devices are not code compatible. Additionally, the

PCA9564 does not support the bus monitor “Snoop” mode nor the

long distance mode and is not footprint compatible with the

PCF8584.

ORDERING INFORMATION

PACKAGES

TEMPERATURE RANGE

ORDER CODE

TOPSIDE MARK

DRAWING NUMBER

20-Pin Plastic DIP

–40

°C to +85 °C

PCA9564N

SOT146-1

20-Pin Plastic SO

–40

°C to +85 °C

PCA9564D

SOT163-1

20-Pin Plastic TSSOP

–40

°C to +85 °C

PCA9564PW

PCA9564

SOT360-1

20-Pin Plastic HVQFN

–40

°C to +85 °C

PCA9564BS

9564

SOT662-1

whole wafer

–40

°C to +85 °C

PCA9564U

n/a

Standard packing quantities and other packaging data are available at www.standardics.philips.com/packaging.

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