PCAL9535APW,118 NXP Semiconductors, PCAL9535APW,118 Datasheet

PCAL9535APW,118

Manufacturer Part Number

PCAL9535APW,118

Description

Interface - I/O Expanders 16bit I2C IO Port Interrupt and Agile

Manufacturer

NXP Semiconductors

Datasheet

1.PCAL9535APW118.pdf (46 pages)

Specifications of PCAL9535APW,118

Maximum Operating Frequency

100 kHz

Operating Supply Voltage

1.65 V to 5.5 V

Operating Temperature Range

- 40 C to + 85 C

Mounting Style

SMD/SMT

Package / Case

TSSOP-24

Operating Current

160 mA

Output Current

25 mA

Power Dissipation

200 mW

Product Type

I/O Expanders

Current page: 1 of 46
Download datasheet (3Mb)

1. General description

The PCAL9535A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander

with interrupt and reset for I

simple solution when additional I/Os are needed while keeping interconnections to a

minimum, for example, in ACPI power switches, sensors, push buttons, LEDs, fan control,

etc.

In addition to providing a flexible set of GPIOs, the wide V

allows the PCAL9535A to interface with next-generation microprocessors and

microcontrollers where supply levels are dropping down to conserve power.

The PCAL9535A contains the PCA9535 register set of four pairs of 8-bit Configuration,

Input, Output, and Polarity Inversion registers, and additionally, the PCAL9539 has

Agile I/O, which are additional features specifically designed to enhance the I/O. These

additional features are: programmable output drive strength, latchable inputs,

programmable pull-up/pull-down resistors, maskable interrupt, interrupt status register,

programmable open-drain or push-pull outputs.

The PCAL9535A is a pin-to-pin replacement to the PCA9535 and PCA9535A, however,

the PCAL9535A powers up with all I/O interrupts masked. This mask default allows for a

board bring-up free of spurious interrupts at power-up.

The PCAL9535A open-drain interrupt (INT) 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.

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt

signal on this line, the remote I/O can inform the microcontroller if there is incoming data

on its ports without having to communicate via the I

remain a simple slave device.

The device outputs have 25 mA sink capabilities for directly driving LEDs while consuming

low device current.

The power-on reset sets the registers to their default values and initializes the device state

machine.

Three hardware pins (A0, A1, A2) select the fixed I

devices to share the same I

PCAL9535A

Low-voltage 16-bit I

Rev. 1 — 28 September 2012

C-bus/SMBus applications. NXP I/O expanders provide a

C-bus/SMBus.

C-bus I/O port with interrupt and Agile I/O

C-bus address and allow up to eight

C-bus. Thus, the PCAL9535A can

range of 1.65 V to 5.5 V

Product data sheet

Related parts for PCAL9535APW,118

Related keywords

PCAL9535APW,118 datasheet
PCAL9535APW,118 data sheet
PCAL9535APW,118 pdf datasheet
PCAL9535APW,118 component
PCAL9535APW,118 part
PCAL9535APW,118 distributor
PCAL9535APW,118 RoHS
PCAL9535APW,118 datasheet download