TCA6416APWR

Overview

Category: Integrated Circuit (IC)

Use: GPIO Expander

Characteristics: - 16-bit I/O expander with interrupt output - Low standby current consumption - Supports both 1.8V and 3.3V logic levels - Compatible with I2C bus interface - Wide operating voltage range: 1.65V to 5.5V - Schmitt-trigger action on all inputs

Package: TSSOP (Thin Shrink Small Outline Package)

Essence: TCA6416APWR is a versatile GPIO expander IC that provides additional input/output pins for microcontrollers or other devices.

Packaging/Quantity: The TCA6416APWR comes in a TSSOP package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Input Voltage Range: 0V to VDD
• Output Voltage Range: 0V to VDD
• Maximum I/O Current: ±10mA
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Frequency: Up to 400kHz

Pin Configuration

The TCA6416APWR has a total of 24 pins, which are assigned as follows:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | SDA | Serial Data Line | | 2 | SCL | Serial Clock Line | | 3-18 | P0-P15 | General Purpose I/O Pins | | 19 | INT | Interrupt Output | | 20 | A0 | Address Bit 0 | | 21 | A1 | Address Bit 1 | | 22 | A2 | Address Bit 2 | | 23 | GND | Ground | | 24 | VDD | Supply Voltage |

Functional Features

• Provides 16 general-purpose I/O pins
• Supports both input and output modes for each pin
• Interrupt output pin for efficient event-driven applications
• Can be cascaded with other I2C devices
• Low standby current consumption for power-sensitive applications
• Schmitt-trigger action on all inputs for noise immunity

Advantages and Disadvantages

Advantages: - Versatile GPIO expander suitable for various applications - Wide operating voltage range allows compatibility with different systems - Low standby current consumption helps conserve power - Schmitt-trigger action on inputs ensures reliable operation in noisy environments

Disadvantages: - Limited number of I/O pins (16) may not be sufficient for complex projects requiring more GPIOs - Requires an I2C bus interface, which may add complexity to the system design

Working Principles

The TCA6416APWR is controlled through the I2C bus interface. It acts as an I/O expander, allowing a microcontroller or other devices to control additional input/output pins beyond their built-in capabilities. The device communicates with the master device (e.g., microcontroller) using the SDA (Serial Data Line) and SCL (Serial Clock Line) pins.

By configuring the appropriate registers, the user can set the direction (input/output) and logic levels of each individual pin. The interrupt output pin (INT) can be used to signal the master device when a specific event occurs on any of the I/O pins.

Detailed Application Field Plans

The TCA6416APWR can be used in various applications, including but not limited to: - Expanding the number of GPIO pins in microcontroller-based systems - Keypad scanning in consumer electronics - LED matrix control - Sensor interfacing - Industrial automation systems

Alternative Models

1. MCP23017: 16-bit I/O expander with I2C interface, compatible with 1.8V and 3.3V logic levels.
2. PCF8574: 8-bit I/O expander with I2C interface, suitable for low-cost applications.
3. MAX7313: 16-bit I/O expander with interrupt output and push-pull outputs.

These alternative models offer similar functionality to the TCA6416APWR and can be considered based on specific project requirements.

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