Electronics

Expansion I/o Board Pcf8574 Support Module

AED 16.80

1

Description

This is the I/O extended module, which uses for the I2C interface, you can use two of the module to extend 8 I/O. Support cascading, and you can use at most 8 modules to extend 64 I/O at the same time. 

Specifications:

  • 8 bi-directional data lines
  • Loop-thru feature allows expansion of up to 8 modules / 64 data lines
  • I2C interface with jumper adjustable addresses
  • Interrupt output capability
  • 3.3V and 5V are compatible.

Module Pinout:

The connections to the module are straightforward.

  1. Supply 3.3 or 5V power and ground.
  2. Connect I2C SCL and SDA lines to the same on the MCU.
  3. If used, connect the INT line to an interrupt input on the MCU and use a pull-up resistor.

 

Package includes: