Introduction - If you have any usage issues, please Google them yourself
PCF8591 is a monolithic, individually powered, low power, 8-bit CMOS data acquisition device. The PCF8591 features 4 analog inputs, 1 analog outputs, and 1 serial I2C bus interfaces. PCF8591's 3 address pins A0, A1, and A2 can be used for hardware address programming, allowing access to 8 PCF8591 devices on the same I2C bus without the need for additional hardware.