XRA1201IG24-F Exar Corporation, XRA1201IG24-F Datasheet

XRA1201IG24-F

Manufacturer Part Number

XRA1201IG24-F

Description

Manufacturer

Exar Corporation

Datasheets

1.XRA1201IG24-F.pdf (17 pages)

2.XRA1201IG24-F.pdf (17 pages)

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SEPTEMBER 2011

GENERAL DESCRIPTION

The XRA1201/1201P is a 16-bit GPIO expander with

an I

XRA1201 has internal 100K ohm pull-up resistors on

each I/O pin that can be individually enabled. The

XRA1201P has the internal pull-up resistors enabled

upon power-up in case it is necessary for the inputs

to be in a known state.

In addition, the GPIOs on the XRA1201/1201P can

individually be controlled and configured. As outputs,

the GPIOs can be outputs that are high, low or in

three-state mode. The three-state mode feature is

useful for applications where the power is removed

from the remote devices, but they may still be

connected to the GPIO expander.

As inputs, the internal pull-up resistors can be

enabled or disabled and the input polarity can be

inverted.

different

programmed to generate an interrupt on the rising

edge, falling edge or on both edges. The interrupt

can be cleared if the input changes back to its original

state or by reading the current state of the inputs.

The XRA1201/1201P are enhanced versions of other

16-bit GPIO expanders with an I

The XRA1201 is pin and software compatible with the

PCA9535, TCA9535 and MAX7312. The XRA1201P

is pin and software compatible with the CAT9555,

PCA9555, TCA9555, MAX7311 and MAX7318.

The XRA1201/1201P are available in 24-pin QFN

and 24-pin TSSOP packages.

Exar

Corporation 48720 Kato Road, Fremont CA, 94538

C/SMBus interface.

behaviors.

The interrupt can be programmed for

The

After power-up, the

interrupts

C/SMBus interface.

can

•

(510) 668-7000

FEATURES

•

APPLICATIONS

•

1.65V to 3.6V operating voltage

16 General Purpose I/Os (GPIOs)

5V tolerant inputs

Maximum stand-by current of 1uA at +1.8V

Individually programmable inputs

Individually programmable outputs

Open-drain active low interrupt output

Pin and software compatible with PCA9535,

TCA9535, MAX7312 (XRA1201)

Pin and software compatible with CAT9555,

PCA9555, TCA9555, MAX7311 and MAX7318

(XRA1201P)

3kV HBM ESD protection per JESD22-A114F

200mA latch-up performance per JESD78B

Personal Digital Assistants (PDA)

Cellular Phones/Data Devices

Battery-Operated Devices

Global Positioning System (GPS)

Bluetooth

C/SMBus bus interface

■

16-BIT I2C/SMBUS GPIO EXPANDER

Noise filter on SDA and SCL inputs

Up to 32 I

Internal pull-up resistors

Polarity inversion

Individual interrupt enable

Rising edge and/or Falling edge interrupt

Input filter

Output Level Control

Output Three-State Control

C clock frequency up to 400kHz

•

FAX (510) 668-7017

C Slave Addresses

XRA1201/1201P

•

www.exar.com

REV. 1.0.0

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