PCA9675DK,118

Product Overview

Category

PCA9675DK,118 belongs to the category of integrated circuits (ICs).

Use

The PCA9675DK,118 is commonly used as an I/O expander for microcontroller-based systems.

Characteristics

• The PCA9675DK,118 is a 16-bit I/O expander with an I2C-bus interface.
• It provides general-purpose remote I/O expansion for most microcontroller families.
• The device features an open-drain interrupt output pin and a reset input pin.
• It operates from 2.3V to 5.5V, making it suitable for a wide range of applications.
• The PCA9675DK,118 is available in a small package, making it easy to integrate into various designs.

Package

The PCA9675DK,118 is available in a surface-mount package.

Essence

The essence of PCA9675DK,118 lies in its ability to expand the number of I/O pins available in microcontroller-based systems.

Packaging/Quantity

The PCA9675DK,118 is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Number of I/O Pins: 16
• Interface Type: I2C-bus
• Supply Voltage Range: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: Surface Mount

Detailed Pin Configuration

The PCA9675DK,118 has a total of 24 pins. The detailed pin configuration is as follows:

1. SDA: Serial Data Input/Output
2. SCL: Serial Clock Input
3. A0: Address Select Bit 0
4. A1: Address Select Bit 1
5. A2: Address Select Bit 2
6. INT: Interrupt Output
7. RST: Reset Input 8-23. P0-P15: General Purpose I/O Pins
8. GND: Ground

Functional Features

• I2C-bus interface for easy integration with microcontrollers.
• 16 general-purpose I/O pins for expanding the number of available I/Os.
• Open-drain interrupt output pin for efficient communication with the microcontroller.
• Reset input pin for resetting the device if needed.
• Wide supply voltage range allows compatibility with various systems.

Advantages and Disadvantages

Advantages

• Provides additional I/O pins, enhancing the capabilities of microcontroller-based systems.
• Easy integration with microcontrollers through the I2C-bus interface.
• Small package size enables space-efficient designs.
• Wide supply voltage range ensures compatibility with different power sources.

Disadvantages

• Limited to 16 I/O pins, which may not be sufficient for certain applications requiring a higher number of I/Os.
• Requires knowledge of I2C-bus protocol for proper implementation.

Working Principles

The PCA9675DK,118 operates by communicating with a microcontroller through the I2C-bus interface. It receives commands from the microcontroller and controls the state of its 16 I/O pins accordingly. The open-drain interrupt output pin can be used to notify the microcontroller of any events or changes in the I/O states. The reset input pin allows the device to be reset if necessary.

Detailed Application Field Plans

The PCA9675DK,118 finds application in various fields, including but not limited to: - Home automation systems - Industrial control systems - Robotics - Automotive electronics - Internet of Things (IoT) devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the PCA9675DK,118 include: - MCP23017 - PCF8574 - MAX7313

These alternative models can be considered based on specific requirements and compatibility with the target system.

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