PCA9539 查看數據表（PDF） - Philips Electronics

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PCA9539

16-bit I2C and SMBus, low power I/O port with interrupt and reset

Philips Electronics 

Philips Semiconductors

16-bit I2C and SMBus, low power I/O port

with interrupt and reset

Product data sheet

PCA9539

FEATURES

• 16-bit I2C GPIO with interrupt and reset

• Operating power supply voltage range of 2.3 V–5.5 V

• 5 V tolerant I/Os

• Polarity inversion register

• Active LOW interrupt output

• Active LOW reset input

• Low stand-by current

• Noise filter on SCL/SDA inputs

• No glitch on power-up

• Internal power-on reset

• 16 I/O pins which default to 16 inputs

• 0 kHz to 400 kHz clock frequency

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

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

JESD22-C101

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

exceeds 100 mA

• Offered in three different packages: SO24, TSSOP24, and

HVQFN24

DESCRIPTION

The PCA9539 is a 24-pin CMOS device that provide 16 bits of

General Purpose parallel Input/Output (GPIO) expansion with

interrupt and reset for I2C/SMBus applications and was developed

to enhance the Philips family of I2C I/O expanders. I/O expanders

provides a simple solution when additional I/O is needed for ACPI

power switches, sensors, pushbuttons, LEDs, fans, etc.

The PCA9539 consists of two 8-bit Configuration (Input or Output

selection); Input, Output and Polarity inversion (Active HIGH or

Active LOW operation) registers. The system master can enable the

I/Os as either inputs or outputs by writing to the I/O configuration

bits. The data for each Input or Output is kept in the corresponding

Input or Output register. The polarity of the read register can be

inverted with the Polarity Inversion Register. All registers can be

read by the system master.

The PCA9539 is identical to the PCA9555 except for the removal of

the internal I/O pull-up resistor which greatly reduces power

consumption when the I/Os are held LOW, repleacement of A2 with

RESET and different address range.

The PCA9539 open-drain interrupt output is activated when any

input state differs from its corresponding input port register state and

is used to indicate to the system master that an input state has

changed. The power-on reset sets the registers to their default

values and initializes the device state machine. The RESET pin

causes the same reset/sonfiguration to occur without depowering

the device.

Two hardware pins (A0, A1) vary the fixed I2C address and allow up

to four devices to share the same I2C/SMBus.

ORDERING INFORMATION

PACKAGES

TEMPERATURE RANGE

ORDER CODE

TOPSIDE MARK

24-Pin Plastic SO

–40 °C to +85 °C

PCA9539D

PCA9539D

24-Pin Plastic TSSOP

–40 °C to +85 °C

PCA9539PW

PCA9539PW

24-Pin Plastic HVQFN

–40 °C to +85 °C

PCA9539BS

9539

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

I2C is a trademark of Philips Semiconductors Corporation.

SMBus as specified by the Smart Battery System Implementers Forum is a derivative of the Philips I2C patent.

DRAWING NUMBER

SOT137-1

SOT355-1

SOT616-1

2004 Sep 30

2

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