iHaospace 2 Pcs PCF8574 PCF8574T IO Expansion Board I/O Expander I2C Bus Evaluation Development Module

PCF8574 IO Expansion Board Based on the I2C interface I / O expansion modules, using two I / O can be extended to eight I / O (up to simultaneous use 8 PCF8574, expanded to 64 I / O) Supports two types of Interface, access to the target board: Pin or row seat 2 supports I2C bus cascade (via pin, row seat docking methods can be used simultaneously multiple I2C modules) Typical applications: for I / O resource constraints the MCU I / O expansion