IO Expansion Board CAT9555 for I2C SMBus

IO Expansion Board CAT9555 for I2C SMBus

IO Expansion Board CAT9555 for I2C SMBus

IO Expansion Board CAT9555 for I2C SMBus

IO Expansion Board CAT9555 for I2C SMBus

IO Expansion Board CAT9555 for I2C SMBus

This expansion board offers a 16-bit parallel input/output port expansion for applications compatible with I2C and SMBus. These I/O expanders offer a straightforward solution for scenarios requiring extra I/Os, such as sensors, power switches, LEDs, buttons, and fans.

The chip CAT9555 of this product consists of two 8−bit Configuration ports (input or output), Input, Output and Polarity inversion registers, and an I2C/SMBus−compatible serial interface. Any of the 16 I/Os can be configured as an input or output by writing to the configuration register. The system master can invert the CAT9555 input data by writing to the active−high polarity inversion register. The CAT9555 features an active low interrupt output which indicates to the system master that an input state has changed. The input pins of three addresses provide the device's extended addressing capability and allow up to eight devices to share the same bus.

Product Features:

Specifications

DIMENSIONS45mm(Length) x 25mm(Width)
NUMBER OF I/O PORTS16
CONTROL CHIPCAT9555
SIGNAL INTERFACEI2C
SUPPLY VOLTAGE3.3V/5V
CAT9555 IO Expansion Board Module

Definitions of Connectors

VCCPower supply positive(3.3V/5V)
GNDGround
SDAI2C data line
SCLI2C clock line
INTInterrupt Output , active low

WIKI

IO Expansion Board Module CAT9555

Package Contents

  1. CAT9555 IO Expansion Module x 1
  2. PH2.0 20cm 5Pin x 1
CAT9555 IO Expansion Board Module

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