8-Bit I/O Expander with I²C-Bus/SPI Interface

PCA9502BS

The PCA9502 is an 8-bit I/O expander with I²C-bus/SPI host interface. The device comes in a very small HVQFN24 package, which makes it ideally suitable for hand-held, battery operated applications.

The device also supports software reset, which allows the host to reset the device at any time, independent of the hardware reset signal.

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Product Details

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Block Diagram

PCA9502 Block Diagram

PCA9502 Block Diagram
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Features

General features
  • Selectable I²C-bus or SPI interface
  • 3.3 V or 2.5 V operation
  • Industrial temperature range: -40 Cel to +85 Cel
  • Eight programmable I/O pins
  • Software reset
  • Industrial and commercial temperature ranges
  • Available in HVQFN24 package
  • 16 hardware-selectable follower addresses

I²C-bus features

  • Noise filter on SCL/SDA inputs
  • 400 kbit/s (maximum)
  • Compliant with I²C-bus Fast-mode
  • Follower mode only

SPI features

  • 15 Mbit/s maximum speed
  • Follower mode only
  • SPI Mode 0

  • Factory automation and process control
  • Portable and battery operated devices
  • Cellular data devices

    • Target Applications

    • Factory automation and process control
    • Portable and battery operated devices
    • Cellular data devices

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