Waveshare® PCF8574T PCF8574 IO Expansion Module I/O I2C Board

Feature Function introduction I O expansion module based on I2C interface using 2 I O can expand 8 I O it can use up to 8 PCF8574 at the same time expand to 64 I O Main features 1 Support two interface types to access the target board pin header or row seat2 Support I2C bus cascading multiple I2C modules can be used at the same time through the method of pin header and row seat docking Typical applications I O expansion for MCUs with scarce I O resourcesMain resources PCF8574 I2C interface 8 bit parallel portDocuments Schematic Click here to openSample tutorial Click here to openPCF8574 Click here to openPackage includes 1 xIO Expansion Module