Description

Are the I/O pins exhausted??This PCF8575 Remote 16 Bits I2C IIC SMBus I/O Expander Module is a large module allows the user to expand up to 16 i/o with only two i/o for control. The PCF8575 is connected via an I2C interface and features 16-bit near-bi-directional input/output pins.
Onboard 3.3V level converter circuit, if you don?t have a solder pad of VCC-VDD, the PCF8575 level is 3.3V. If you solder it, the level will be the same as with VCC

Features:

16 individually addressable pins.
Each pin configurable for input or output
Open drain interrupts output pin for input change interrupt.
Ideal for R3 and other MCUs to simple relay, buzzer, button, led.

Package Includes:
1 x?Expander Module