PCA9552D,112

Product Overview

Category

The PCA9552D,112 belongs to the category of integrated circuits (ICs) specifically designed for input/output (I/O) expansion in microcontroller-based systems.

Use

This product is commonly used to increase the number of I/O ports available in a system. It provides an easy and efficient way to connect multiple peripheral devices to a microcontroller.

Characteristics

• I2C-bus interface for communication with the microcontroller.
• 16 programmable I/O pins.
• Low standby current consumption.
• Wide operating voltage range.
• High noise immunity.
• RoHS compliant.

Package

The PCA9552D,112 is available in a small outline package (SOP) with 20 pins. This package ensures easy integration into various electronic systems.

Essence

The essence of PCA9552D,112 lies in its ability to expand the I/O capabilities of microcontrollers, enabling the connection of additional devices without the need for complex wiring or hardware modifications.

Packaging/Quantity

The PCA9552D,112 is typically packaged in reels or tubes, containing a specific quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply Voltage: 2.3V to 5.5V
• I/O Voltage: 1.8V to 5.5V
• Maximum Output Current: 25mA per I/O pin
• Operating Temperature Range: -40°C to +85°C
• I2C-bus Frequency: Up to 400kHz

Detailed Pin Configuration

The PCA9552D,112 features a total of 20 pins, each serving a specific function. The pin configuration is as follows:

1. SDA - Serial Data Input/Output
2. SCL - Serial Clock Input 3-18. P0-P15 - Programmable I/O Pins
3. GND - Ground
4. VCC - Supply Voltage

Functional Features

• Bidirectional I/O pins that can be individually configured as inputs or outputs.
• Internal pull-up resistors for each I/O pin.
• Interrupt output to indicate changes in input states.
• Software programmable I/O logic levels.

Advantages and Disadvantages

Advantages

• Simplifies I/O expansion in microcontroller-based systems.
• Reduces the need for additional hardware components.
• Provides flexibility in connecting peripheral devices.
• Low power consumption.
• Wide operating voltage range.

Disadvantages

• Limited number of I/O pins (16 in total).
• Requires I2C-bus communication protocol support in the microcontroller.

Working Principles

The PCA9552D,112 utilizes the I2C-bus interface to communicate with the microcontroller. It receives commands from the microcontroller to configure the I/O pins as inputs or outputs. The state of each pin can be read or set through the I2C-bus. The internal pull-up resistors ensure stable logic levels for the connected devices.

Detailed Application Field Plans

The PCA9552D,112 finds applications in various fields where I/O expansion is required. Some potential application areas include:

1. Home automation systems: Expanding the number of control inputs/outputs for lighting, security, and HVAC systems.
2. Industrial automation: Increasing the number of I/O ports for sensor interfacing and control signals.
3. Consumer electronics: Enabling connection of multiple peripherals to a microcontroller, such as buttons, switches, and displays.
4. Automotive electronics: Enhancing the I/O capabilities for vehicle control systems, infotainment, and driver assistance systems.

Detailed and Complete Alternative Models

• PCA9552PW,118
• PCA9552BS,118
• PCA9552DB,112
• PCA9552DGG,112

These alternative models offer similar functionality and pin configuration to the PCA9552D,112, providing options for different package types or additional features.

In conclusion, the PCA9552D,112 is an integrated circuit designed for I/O expansion in microcontroller-based systems. Its compact size, wide operating voltage range, and I2C-bus interface make it a versatile choice for various applications. While it has limitations in terms of the number of I/O pins, its advantages outweigh the disadvantages, making it a popular choice among developers seeking efficient I/O expansion solutions.