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PCA9534DW
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PCA9534DW

Product Overview

Category

The PCA9534DW belongs to the category of I/O expanders.

Use

It is used to provide a simple solution when additional I/Os are needed for a microcontroller.

Characteristics

  • Low standby current
  • 400 kHz I2C-bus interface
  • Operating power supply voltage range of 2.3 V to 5.5 V
  • Open-drain interrupt output
  • Polarity inversion register

Package

The PCA9534DW is available in a TSSOP20 package.

Essence

The essence of PCA9534DW lies in its ability to expand the I/O capability of a microcontroller using the I2C bus.

Packaging/Quantity

The PCA9534DW is typically available in reels with 2500 units per reel.

Specifications

  • Operating Voltage: 2.3 V to 5.5 V
  • Number of I/Os: 8
  • Interface: I2C
  • Package Type: TSSOP20

Detailed Pin Configuration

  1. P00
  2. P01
  3. P02
  4. P03
  5. P04
  6. P05
  7. P06
  8. P07
  9. GND
  10. A0
  11. A1
  12. SDA
  13. SCL
  14. INT
  15. RESET
  16. VDD
  17. P00
  18. P01
  19. P02
  20. P03

Functional Features

  • Input/Output port expander
  • Interrupt output
  • Polarity inversion register
  • Low standby current

Advantages and Disadvantages

Advantages

  • Simple I/O expansion
  • Low standby current
  • I2C-bus interface for easy communication

Disadvantages

  • Limited number of I/Os (8)

Working Principles

The PCA9534DW works by providing additional I/O ports to a microcontroller through the I2C-bus interface. It allows the microcontroller to control and monitor the I/O pins without using additional GPIOs.

Detailed Application Field Plans

The PCA9534DW can be used in various applications such as: - LED dimming and fan control - Keypad interfacing - Sensor monitoring - Power sequencing

Detailed and Complete Alternative Models

Some alternative models to PCA9534DW include: - MCP23008 - MAX7311 - PCF8574

In conclusion, the PCA9534DW is a versatile I/O expander that provides a simple and efficient solution for expanding the I/O capabilities of a microcontroller. Its low standby current, I2C-bus interface, and compact package make it suitable for a wide range of applications.

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Καταγράψτε 10 συνήθεις ερωτήσεις και απαντήσεις που σχετίζονται με την εφαρμογή του PCA9534DW σε τεχνικές λύσεις

  1. What is PCA9534DW?

    • PCA9534DW is an 8-bit I2C-bus and SMBus I/O expander designed for 2.3 V to 5.5 V VCC operation.

  2. What are the key features of PCA9534DW?

    • The key features include 8-bit remote I/O expansion, open-drain interrupt output, hardware address pin, and low standby current.

  3. How can PCA9534DW be used in technical solutions?

    • PCA9534DW can be used to provide general-purpose remote I/O expansion for most microcontroller families via the I2C-bus interface.

  4. What is the maximum frequency supported by PCA9534DW?

    • The maximum frequency supported by PCA9534DW is 400 kHz.

  5. Can PCA9534DW be used in automotive applications?

    • Yes, PCA9534DW is suitable for automotive applications due to its wide operating voltage range and robust design.

  6. What are the typical applications of PCA9534DW?

    • Typical applications include industrial control systems, white goods, set-top boxes, and LED lighting control.

  7. Does PCA9534DW support cascading multiple devices?

    • Yes, PCA9534DW supports cascading multiple devices on the I2C bus for additional I/O expansion.

  8. What is the power supply voltage range for PCA9534DW?

    • The power supply voltage range for PCA9534DW is 2.3 V to 5.5 V.

  9. Is PCA9534DW compatible with both I2C-bus and SMBus?

    • Yes, PCA9534DW is compatible with both I2C-bus and SMBus interfaces.

  10. Are there any evaluation kits available for PCA9534DW?

    • Yes, evaluation kits are available to help users quickly evaluate the PCA9534DW in their technical solutions.