TCA9554PWR

Product Overview

Use

This product is commonly used for input/output (I/O) expansion in various electronic devices.

Characteristics

TCA9554PWR is a 16-bit I/O expander with an I2C interface.
It operates at a voltage range of 1.65V to 5.5V, making it suitable for a wide range of applications.
The device has a low standby current consumption, which helps in reducing power consumption.
It offers a high-speed I2C bus interface, enabling efficient communication with other devices.
TCA9554PWR is available in a small package, making it suitable for space-constrained designs.

Package and Quantity

The TCA9554PWR is available in a TSSOP-24 package. It is typically sold in reels of 2500 units.

Specifications

Supply Voltage Range: 1.65V to 5.5V
Number of I/Os: 16
I2C Bus Frequency: Up to 400kHz
Standby Current: 1µA (typical)
Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TCA9554PWR has a total of 24 pins arranged as follows:

```

| | | 1 24 | | | |_______________| ```

Pin descriptions: - Pins 1 to 8: I/O0 to I/O7 (Input/Output pins) - Pins 9 to 16: I/O8 to I/O15 (Input/Output pins) - Pin 17: SDA (Serial Data Input/Output) - Pin 18: SCL (Serial Clock Input) - Pin 19: A0 (Address Select Bit 0) - Pin 20: A1 (Address Select Bit 1) - Pin 21: A2 (Address Select Bit 2) - Pins 22 and 23: GND (Ground) - Pin 24: VCC (Supply Voltage)

Functional Features

The TCA9554PWR offers the following functional features: - I/O expansion: It provides 16 additional I/O pins, which can be used to connect various peripheral devices. - Bidirectional I/Os: The pins can be configured as either inputs or outputs based on the application requirements. - Interrupt Output: The device can generate an interrupt signal to the microcontroller when a change in input status is detected. - Software Programmable: The behavior of the I/O pins can be controlled through software using the I2C interface.

Advantages and Disadvantages

Advantages

Compact Size: The small package size makes it suitable for space-constrained designs.
Low Power Consumption: The device has a low standby current, helping to reduce overall power consumption.
Versatile: It can be used in a wide range of applications due to its voltage range compatibility.
Easy Integration: The I2C interface simplifies the integration process with other devices.

Disadvantages

Limited I/O Count: The device provides 16 additional I/O pins, which may not be sufficient for certain complex applications.
Dependency on I2C Bus: The functionality of the device relies on the proper functioning of the I2C bus, which may introduce potential communication issues.

Working Principles

The TCA9554PWR operates by communicating with a microcontroller or host device through the I2C bus. The microcontroller sends commands to the TCA9554PWR to configure the I/O pins as inputs or outputs. The device can then read the input status or drive the output pins accordingly. It also supports interrupt generation, allowing the microcontroller to be notified of any changes in the input status.

Application Field Plans

The TCA9554PWR finds applications in various fields, including but not limited to: - Consumer Electronics: Used for I/O expansion in smart home devices, remote controls, and audio/video equipment. - Industrial Automation: Enables additional I/Os in industrial control systems, PLCs, and robotics. - Automotive: Used for I/O expansion in automotive infotainment systems, lighting controls, and dashboard displays. - Internet of Things (IoT): Facilitates I/O expansion in IoT devices such as sensors, actuators, and smart appliances.

Alternative Models

Several alternative models with similar functionality to TCA9554PWR are available in the market. Some notable alternatives include: - MCP23017: 16-bit I/O expander with I2C interface from Microchip Technology. - PCF8574: 8-bit I/O expander with I2C interface from NXP Sem

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TCA9554PWR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TCA9554PWR:

Q: What is TCA9554PWR? A: TCA9554PWR is a 16-bit I/O expander with I2C interface, which allows you to expand the number of available GPIO pins in your microcontroller-based project.
Q: What is the operating voltage range of TCA9554PWR? A: The operating voltage range of TCA9554PWR is typically between 1.65V and 5.5V.
Q: How many GPIO pins can be controlled using TCA9554PWR? A: TCA9554PWR provides 16 GPIO pins that can be individually controlled as inputs or outputs.
Q: Can TCA9554PWR handle interrupts? A: Yes, TCA9554PWR has interrupt functionality that can be configured to trigger when a pin's state changes.
Q: What is the maximum current that can be sourced/sunk by each GPIO pin? A: Each GPIO pin of TCA9554PWR can source/sink up to 25mA of current.
Q: Is TCA9554PWR compatible with I2C bus? A: Yes, TCA9554PWR communicates over the I2C bus, making it compatible with a wide range of microcontrollers.
Q: Can TCA9554PWR operate in both input and output modes simultaneously? A: Yes, TCA9554PWR supports independent configuration of each GPIO pin as either an input or an output.
Q: Does TCA9554PWR have built-in pull-up resistors? A: Yes, TCA9554PWR has programmable internal pull-up resistors that can be enabled or disabled for each GPIO pin.
Q: Can TCA9554PWR be cascaded with other I/O expanders? A: Yes, TCA9554PWR supports cascading multiple devices together to further expand the number of available GPIO pins.
Q: Is there any example code or libraries available for TCA9554PWR? A: Yes, many microcontroller platforms have libraries and example code available that simplify the integration of TCA9554PWR into your project. Check the manufacturer's website or online communities for resources specific to your platform.

Please note that these answers are general and may vary depending on the specific implementation and configuration of TCA9554PWR in your technical solution.