Datasheet > XRA1404IG16-F

XRA1404IG16-F

更新时间： 2024-11-22 01:05:07

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
14页	408K
描述
8-BIT SPI GPIO EXPANDER WITH INTEGRATED LEVEL SHIFTERS

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XRA1404IG16-F 数据手册

XRA1404

8-BIT SPI 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 XRA1404 is an 8-bit GPIO expander with an SPI

interface. After power-up, the XRA1404 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 XRA1404 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

• SPI bus interface

■ SPI Clock Frequency up to 26MHz

• Individually programmable inputs

■ Internal pull-up resistors

■ Polarity inversion

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

■ Individual interrupt enable

■ Rising edge and/or Falling edge interrupt

■ Input filter

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.

• Individually programmable outputs

■ Output Level Control

The XRA1404 is available in 16-pin QFN and 16-pin

TSSOP packages.

■ Output Three-State Control

• Open-drain active low interrupt output

• Active-low reset input

• 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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