3Pcs PCF8575 Board Module IO Expansion Board Module I2C to 16IO IIC I2C I/O Port Expansion Board


Description and features

• 【I2C Addressability】The default I2C address is 0x20, but this can be altered by soldering the A1 and A2 selection pads, offering flexibility in system design
• 【Voltage and Current Specifications】It operates within a voltage range of 2.5 to 5.5V DC and has a maximum working current of 100mA, making it suitable for a variety of applications without overloading your system
• 【Pin Configuration】The module features 16 individually addressable pins, with each pin offering the versatility to be set as either an input or an output, expanding the capabilities of your Arduino or other microcontrollers
• 【Interrupt Output Feature】 It includes an open-drain interrupt output pin that triggers an interrupt upon input changes, enhancing the module's functionality for responsive applications
• 【Application Examples】This Open-Smart PCF8575 IO Expander Board Module is perfect for controlling simple devices such as relays, buzzers, buttons, and LEDs, making it a valuable addition to Arduino R3 and other MCU projects

Product Description:

This powerful module allows users to expand to up to 16 I/Os using only two I/Os for control. PCF8575 is controlled via an I2C interface and has 16-bit quasi-offerirectional input/output pins.

On the onboard 3.3V level converter circuit, if the VCC-VDD pad is not soldered, the level of PCF8575 is 3.3V. If soldered, its level will be the same as VCC.

Product Features:

- for Arduino available library: PCF8575

- Working voltage: 2.5 - 5.5VDC

- Working current: 100mA(MAX)

- I2C address: 0x20(default),can be modified by soldering A1 and A2 selection pads.

- 16 individually addressable pins.

- Each pin configurable for input or output.

- Open-drain interrupt output pin for input change interrupt.

- Great for Arduino R3 and other MCU to control simple relay, buzzer, button, led.

Package Includes:

3 X PCF8575 IO Expander Board Module

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