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PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F
PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F
PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F
PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F
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PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F
PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F
PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F
PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F
Expand your MCU's I/O capabilities with our powerful 8-bit I2C I/O Expansion Module!
PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F
Item #: 84763150

PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F

Item #: 84763150

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Expand your MCU's I/O capabilities with our powerful 8-bit I2C I/O Expansion Module!
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What Stands Out

I2C Interface
The PCF8574 offers a simple I2C interface for effortless communication with microcontrollers, enhancing flexibility and integration in various projects.
8-bit Expansion
This I/O expander allows the addition of eight digital input/output pins, perfect for projects requiring more connections without complex wiring.
Versatile Compatibility
Designed for AVR, STM8, and C8051F, this module ensures broad compatibility across platforms, making it ideal for diverse development needs.

Product Details

Shop PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module I2C Interface 8-bit Module for AVR STM8 C8051F online at a best price in Trinidad and Tobago. B0982CLSS8
Connectivity TechnologyI2C
Operating SystemLinux
Compatible DevicesMicrocontrollers (AVR, STM8, C8051F, etc.)
Processor Count1
BrandMidzoo
Model NamePCF8574
Built-In MediaPCF8574 IO Expansion Board
ManufacturerMidzoo
Mfr Part NumberMiMODULE-13181
Included ComponentsPCF8574 IO Expansion Board
Item Weight0.1 lbs (50 grams)

What's in the box

PCF8574 IO Expansion Board

Who Should Buy?

Suitable For
  • Microcontroller Enthusiasts

    Perfect for hobbyists looking to expand I/O capabilities of AVR or STM8 microcontrollers with ease.

  • IoT Developers

    Ideal for Internet of Things projects requiring additional digital inputs or outputs for sensors and actuators.

  • Educational Use

    Great for teaching students about I2C communication and interfacing with peripheral devices in a hands-on environment.

Not Suitable For
  • High Performance Applications

    Not suitable for projects requiring high speed or large amounts of data due to I2C bus limitations.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the PCF8574 IO Expansion Board used for?

    Answer: The PCF8574 IO Expansion Board is utilized to expand the number of I/O pins available for microcontrollers like AVR, STM8, and C8051F. It connects via I2C, allowing multiple devices to share the same communication bus. This is particularly useful for projects requiring additional input or output pins, such as in automation, robotics, or IoT. By expanding the capabilities of your microcontroller, the PCF8574 can enable complex functionalities without needing multiple processors.
  • Question: How does the PCF8574 work with I2C protocol?

    Answer: The PCF8574 operates on the I2C protocol by allowing communication between the microcontroller and the expander over a two-wire interface. This involves a master-slave setup, where the microcontroller is the master and the PCF8574 acts as a slave device. Each board has a unique address enabling several PCF8574 units to connect to one bus. This setup is ideal for compact designs in projects like home automation, where multiple sensors and devices need to communicate simultaneously.
  • Question: What microcontrollers are compatible with the PCF8574?

    Answer: The PCF8574 is compatible with various microcontrollers, primarily AVR, STM8, and C8051F. These microcontrollers are widely used in hobbyist projects and professional applications due to their ease of use and versatility. For instance, if you are developing a smart home device with an AVR microcontroller, you can easily integrate the PCF8574 to increase the number of inputs and outputs, expanding its functionality seamlessly.
  • Question: Can the PCF8574 be used in Arduino projects?

    Answer: Yes, the PCF8574 is highly suitable for Arduino projects. With its easy integration via the I2C library in Arduino, it allows you to control more devices with fewer pins on your Arduino board. This is especially beneficial for projects like LED control or sensor arrays, where pin limitations can hinder development. Several examples and libraries are available to help you get started with the PCF8574 in your Arduino projects.
  • Question: What types of devices can I connect to the PCF8574?

    Answer: You can connect various devices to the PCF8574, including buttons, LEDs, relays, and sensors. The board allows for up to eight inputs or outputs, making it ideal for applications such as interactive displays, control systems, and environmental monitoring. For instance, in a smart agriculture project, you could use it to monitor soil moisture with sensors while controlling irrigation systems simultaneously.
  • Question: How many PCF8574 modules can be connected to a single I2C bus?

    Answer: You can connect up to eight PCF8574 modules to a single I2C bus, as each module has a unique address. This flexibility allows you to expand your I/O capabilities significantly. For example, in a large-scale automation project, you might use multiple modules to control various appliances or sensors, giving you centralized control over an extensive system without needing additional communication lines.
  • Question: What is the pin configuration of the PCF8574?

    Answer: The PCF8574 features an 8-bit configuration with 8 GPIO pins as well as I2C communication pins (SDA and SCL). The GPIO pins can be configured individually as inputs or outputs based on your requirements. This pin versatility allows users to customize setups for different applications, making it a popular choice in prototyping where rapid changes are necessary, such as testing new devices in a product development cycle.
  • Question: What programming language can I use with the PCF8574?

    Answer: The PCF8574 can be programmed using languages compatible with I2C communication, such as C, C++, and Python. Most commonly, you will find libraries available for Arduino and Raspberry Pi that simplify usage and allow for quick implementation. This versatility makes it accessible for both beginners and experienced developers working on various platforms.
  • Question: Is the PCF8574 suitable for low-power applications?

    Answer: Yes, the PCF8574 is well-suited for low-power applications. The I2C interface allows devices to operate in sleep modes, which conserves power. This quality makes it ideal for battery-operated devices or remote sensors where energy efficiency is crucial. For instance, it can be effectively used in smart environmental monitoring systems that require prolonged battery life.
  • Question: Where can I buy the PCF8574 IO Expansion Board in Trinidad and Tobago?

    Answer: You can purchase the PCF8574 IO Expansion Board through Ubuy, a reliable online shopping platform that offers a wide range of electronic components and tools. Ubuy provides convenient options to browse and select this module, ensuring a smooth shopping experience while accessing various shipping options tailored to your location in Trinidad and Tobago.

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Pros

  • Easy to use with I2C interface
  • Supports multiple devices
  • Compact design saves space
  • Reliable performance for projects
  • Compatible with many microcontrollers

Cons

  • Documentation could be clearer.

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Features & Benefits

  • Supports I2C interface for efficient connection.
  • Two interface types for versatile target board access.
  • Scalable up to 64 I/O using PCF8574 technology.
  • Ideal for applications facing I/O resource shortages.
  • Enable simultaneous use of multiple I2C modules.
  • Compatible with various MCU platforms like AVR and STM8.

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