PCF8574 IO Expansion Board 8-bit I/O Expander I2C-Bus Evaluation

product description
Two I / O Expansion 8 I / Os in the I2C Interface, I / O Expansion Module (Up to Eight Expansion Using PCF8574 to 64 I / Os at the Same Time)
The most important features: Supports two types of interface to access the target board: pin or row seat. Supports I2C Bus Cascading (Docking via pedestal seats can be used on multiple I2C modules simultaneously)
Typical Applications: I / O Resources Shortage MCU I / O Expansion
Main resources: PCF8574 I2C interface, 8-bit parallel
The information includes:
Test program (AVR, STM8, C8051F)
Circuit diagram
Related PDF data

I2C interface, I / O expansion module, two I / O scalability Eight I / Os (up to eight PCF8574s can be expanded simultaneously to 64 I / Os)
The most important features: Supports two interface types to access the target board: pin or row seat. Support I2C bus cascade (multiple I2C modules can be used at the same time through the pin header row seat docking mode)
Typical Applications: I / O Resources Insufficient MCU I / O Expansion
The main resources: PCF8574 I2C interface, 8-bit parallel
Includes: 2 PCF8574 IO expansion boards