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PCAL6416AEX1Z
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PCAL6416AEX1Z

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: GPIO Expander
  • Characteristics: High-performance, low-power, 16-bit I2C-bus/SMBus I/O expander
  • Package: 24-pin TSSOP package
  • Essence: Provides general-purpose input/output expansion for most microcontroller families
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Supply Voltage: 1.65V to 5.5V
  • I/O Voltage: 1.8V to 5.5V
  • Maximum Output Current: ±10mA
  • Operating Temperature Range: -40°C to +85°C
  • I2C-bus Frequency: Up to 400kHz
  • Interrupt Output: Open-drain output with selectable polarity
  • Address Pins: Allows up to 8 devices on the same bus

Detailed Pin Configuration

The PCAL6416AEX1Z has a total of 24 pins. The pin configuration is as follows:

  1. INT - Interrupt output pin
  2. SDA - Serial data line for I2C communication
  3. SCL - Serial clock line for I2C communication
  4. A0 - Address bit 0
  5. A1 - Address bit 1
  6. A2 - Address bit 2
  7. GND - Ground
  8. P00 - General-purpose I/O pin 0
  9. P01 - General-purpose I/O pin 1
  10. P02 - General-purpose I/O pin 2
  11. P03 - General-purpose I/O pin 3
  12. P04 - General-purpose I/O pin 4
  13. P05 - General-purpose I/O pin 5
  14. P06 - General-purpose I/O pin 6
  15. P07 - General-purpose I/O pin 7
  16. VDD - Supply voltage
  17. P10 - General-purpose I/O pin 8
  18. P11 - General-purpose I/O pin 9
  19. P12 - General-purpose I/O pin 10
  20. P13 - General-purpose I/O pin 11
  21. P14 - General-purpose I/O pin 12
  22. P15 - General-purpose I/O pin 13
  23. P16 - General-purpose I/O pin 14
  24. P17 - General-purpose I/O pin 15

Functional Features

  • Provides 16 general-purpose input/output pins
  • Supports both input and output modes for each pin
  • Configurable interrupt output with selectable polarity
  • Low standby current consumption
  • Compatible with I2C-bus and SMBus protocols
  • Allows multiple devices to be connected on the same bus

Advantages and Disadvantages

Advantages

  • High-performance GPIO expander
  • Wide supply voltage range allows compatibility with various microcontrollers
  • Low-power consumption
  • Flexible pin configuration options
  • Easy integration with I2C-bus/SMBus systems

Disadvantages

  • Limited number of I/O pins (16)
  • Requires I2C-bus/SMBus interface for communication

Working Principles

The PCAL6416AEX1Z is an I2C-bus/SMBus compatible GPIO expander. It communicates with a microcontroller or host device through the I2C-bus/SMBus interface. The device acts as an intermediary between the microcontroller and external devices, providing additional input/output pins.

By configuring the appropriate registers via the I2C-bus/SMBus, the PCAL6416AEX1Z can be used to read input states or set output states on its GPIO pins. It also supports interrupt functionality, allowing the microcontroller to be notified of specific events.

Detailed Application Field Plans

The PCAL6416AEX1Z finds applications in various fields, including:

  1. Industrial automation
  2. Consumer electronics
  3. Internet of Things (IoT) devices
  4. Automotive systems
  5. Medical equipment
  6. Robotics
  7. Home automation

In these fields, the PCAL6416AEX1Z is used for expanding the number of available I/O pins, enabling connectivity with external sensors, actuators, and other peripheral devices.

Detailed and Complete Alternative Models

  • PCAL6416AHF: Similar to PCAL6416AEX1Z but available in a 20-pin QFN package
  • PCA9538PW: 8-bit I2C-bus/SMBus I/O expander with lower pin count
  • MCP23017-E/SP: 16-bit I2C-bus I/O expander with higher maximum output current

These alternative models offer similar functionality

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av PCAL6416AEX1Z i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of PCAL6416AEX1Z in technical solutions:

Q1: What is PCAL6416AEX1Z? A1: PCAL6416AEX1Z is a 16-bit I/O expander with an I2C interface, which allows for easy expansion of GPIO (General Purpose Input/Output) pins in various technical solutions.

Q2: What is the operating voltage range of PCAL6416AEX1Z? A2: The operating voltage range of PCAL6416AEX1Z is typically between 1.65V and 5.5V.

Q3: How many GPIO pins does PCAL6416AEX1Z provide? A3: PCAL6416AEX1Z provides 16 GPIO pins that can be configured as inputs or outputs.

Q4: Can PCAL6416AEX1Z handle interrupts? A4: Yes, PCAL6416AEX1Z supports interrupt generation on selected GPIO pins, allowing for efficient event-driven designs.

Q5: Is PCAL6416AEX1Z compatible with I2C communication? A5: Yes, PCAL6416AEX1Z communicates using the I2C protocol, making it compatible with a wide range of microcontrollers and other devices.

Q6: What is the maximum frequency at which PCAL6416AEX1Z can operate? A6: PCAL6416AEX1Z can operate at a maximum frequency of 400 kHz.

Q7: Can PCAL6416AEX1Z be used in both input and output modes simultaneously? A7: Yes, PCAL6416AEX1Z supports independent configuration of each GPIO pin as either an input or an output.

Q8: Does PCAL6416AEX1Z have internal pull-up or pull-down resistors? A8: Yes, PCAL6416AEX1Z has programmable internal pull-up or pull-down resistors for each GPIO pin.

Q9: Can PCAL6416AEX1Z be used in automotive applications? A9: Yes, PCAL6416AEX1Z is designed to meet the requirements of automotive applications and can operate in harsh environments.

Q10: Are there any evaluation boards available for PCAL6416AEX1Z? A10: Yes, NXP provides an evaluation board for PCAL6416AEX1Z, which can help in quick prototyping and testing of the device in various technical solutions.

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