Datasheet > XRA1206

XRA1206

更新时间： 2024-11-02 01:05:07

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
15页	433K
描述
8-BIT I2C/SMBUS GPIO EXPANDER

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XRA1206 数据手册

XRA1206

8-BIT I2C/SMBUS GPIO EXPANDER WITH INTEGRATED LEVEL SHIFTERS

SEPTEMBER 2011

REV. 1.0.0

FEATURES

GENERAL DESCRIPTION

• 1.65V to 3.6V operating voltage

• Integrated level shifters

The XRA1206 is an 8-bit GPIO expander with an I C/

SMBus interface. After power-up, the XRA1206 has

internal 100K ohm pull-up resistors on each I/O pin

that can be individually enabled.

• 8 General Purpose I/Os (GPIOs)

• 5V tolerant inputs

In addition, the GPIOs on the XRA1206 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.

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

• I C/SMBus bus interface

■ I C clock frequency up to 400kHz

■ Noise filter on SDA and SCL inputs

■ Up to 4 I C Slave Addresses

As inputs, the internal pull-up resistors can be

enabled or disabled and the input polarity can be

inverted. The interrupt can be programmed for

• Individually programmable inputs

■ Internal pull-up resistors

■ Polarity inversion

different behaviors.

The interrupts can be

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.

■ Individual interrupt enable

■ Rising edge and/or Falling edge interrupt

■ Input filter

The XRA1206 is an enhanced version of the

TCA6408. The XRA1206 is pin and software

compatible with the TCA6408.

• Individually programmable outputs

■ Output Level Control

■ Output Three-State Control

The XRA1206 is available in 16-pin QFN and 16-pin

TSSOP packages.

• Open-drain active low interrupt output

• Active-low reset input

• Pin and software compatible with TCA6408

• 3kV HBM ESD protection per JESD22-A114F

• 200mA latch-up performance per JESD78B

APPLICATIONS

• Personal Digital Assistants (PDA)

• Cellular Phones/Data Devices

• Battery-Operated Devices

• Global Positioning System (GPS)

• Bluetooth

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

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