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PCA9534ADBR
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PCA9534ADBR

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9534ADBR is a 16-bit I2C-bus and SMBus I/O expander optimized for dimming LEDs in applications such as backlight control, keypad illumination, and other similar uses.

Characteristics: - 16 programmable GPIO pins - I2C-bus and SMBus compatible interface - Low standby current consumption - Wide voltage range (2.3V to 5.5V) - High noise immunity - ESD protection exceeds 2000V HBM per JESD22-A114 and 1000V CDM per JESD22-C101

Package: SSOP (Shrink Small Outline Package)

Essence: The PCA9534ADBR is an essential component for controlling LED brightness in various electronic devices. It provides a simple and efficient solution for managing multiple LEDs through the I2C-bus or SMBus interface.

Packaging/Quantity: The PCA9534ADBR is typically available in reels of 2500 units.

Specifications

  • Supply Voltage Range: 2.3V to 5.5V
  • Number of GPIO Pins: 16
  • Maximum Sink Current per Pin: 25mA
  • Maximum Source Current per Pin: 10mA
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The PCA9534ADBR has a total of 24 pins, which are assigned as follows:

  1. SDA (Serial Data Input/Output)
  2. SCL (Serial Clock Input)
  3. A0 (Address Select Bit 0)
  4. A1 (Address Select Bit 1)
  5. RESET (Reset Input)
  6. INT (Interrupt Output)
  7. P00 (General Purpose I/O Pin 0)
  8. P01 (General Purpose I/O Pin 1)
  9. P02 (General Purpose I/O Pin 2)
  10. P03 (General Purpose I/O Pin 3)
  11. P04 (General Purpose I/O Pin 4)
  12. P05 (General Purpose I/O Pin 5)
  13. P06 (General Purpose I/O Pin 6)
  14. P07 (General Purpose I/O Pin 7)
  15. P10 (General Purpose I/O Pin 8)
  16. P11 (General Purpose I/O Pin 9)
  17. P12 (General Purpose I/O Pin 10)
  18. P13 (General Purpose I/O Pin 11)
  19. P14 (General Purpose I/O Pin 12)
  20. P15 (General Purpose I/O Pin 13)
  21. P16 (General Purpose I/O Pin 14)
  22. P17 (General Purpose I/O Pin 15)
  23. VDD (Supply Voltage)
  24. GND (Ground)

Functional Features

The PCA9534ADBR offers the following functional features:

  • Individual programmable LED dimming control
  • Programmable output polarity inversion
  • Internal power-on reset
  • Noise filter on SCL/SDA inputs
  • Active-low interrupt output
  • Address selection pins for up to 4 devices on the same bus

Advantages and Disadvantages

Advantages: - Flexible and efficient LED dimming control - Wide voltage range allows compatibility with various systems - Low standby current consumption helps conserve power - High noise immunity ensures reliable operation - ESD protection safeguards against electrostatic discharge

Disadvantages: - Limited number of GPIO pins (16) - Requires an I2C-bus or SMBus interface for communication

Working Principles

The PCA9534ADBR operates by receiving commands and data through the I2C-bus or SMBus interface. It interprets these instructions to control the dimming levels of individual LEDs connected to its GPIO pins. The device can be programmed to adjust the brightness of LEDs in real-time, providing dynamic lighting effects.

Detailed Application Field Plans

The PCA9534ADBR finds applications in various fields where LED dimming control is required. Some specific application areas include:

  1. Backlight control in LCD displays
  2. Keypad illumination in electronic devices
  3. Indicator lights in automotive systems
  4. Decorative lighting in consumer electronics
  5. Status indication in industrial equipment

Detailed and Complete Alternative Models

  1. PCA9534APW: Similar to PCA9534ADBR but available in TSSOP package.
  2. PCA9534PW: 16-bit I2C-bus and SMBus I/O expander with similar features, available in TSSOP package.
  3. PCA9534BS: 16-bit I2C-bus and SMBus I/O expander with additional interrupt functionality, available in SSOP package.

These alternative models offer

Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng PCA9534ADBR sa mga teknikal na solusyon

Sure! Here are 10 common questions and answers related to the application of PCA9534ADBR in technical solutions:

  1. Q: What is PCA9534ADBR? A: PCA9534ADBR is a 8-bit I/O expander with I2C-bus/SMBus interface, designed for general-purpose applications.

  2. Q: What is the maximum voltage that PCA9534ADBR can handle? A: PCA9534ADBR can handle a maximum voltage of 5.5V.

  3. Q: How many I/O pins does PCA9534ADBR have? A: PCA9534ADBR has 8 I/O pins that can be configured as inputs or outputs.

  4. Q: Can PCA9534ADBR be used with both 3.3V and 5V microcontrollers? A: Yes, PCA9534ADBR is compatible with both 3.3V and 5V microcontrollers.

  5. Q: How do I communicate with PCA9534ADBR using I2C/SMBus? A: You can communicate with PCA9534ADBR by sending commands and data over the I2C/SMBus interface using appropriate protocols.

  6. Q: Can PCA9534ADBR be used to drive LEDs? A: Yes, PCA9534ADBR can be used to drive LEDs as it provides sink current capability.

  7. Q: Can PCA9534ADBR be used to read digital inputs? A: Yes, PCA9534ADBR can be configured to read digital inputs from external devices.

  8. Q: Is PCA9534ADBR capable of generating interrupts? A: Yes, PCA9534ADBR has interrupt functionality that can be used to notify the microcontroller about changes in input states.

  9. Q: Can multiple PCA9534ADBR devices be connected to the same I2C/SMBus bus? A: Yes, multiple PCA9534ADBR devices can be connected to the same I2C/SMBus bus by assigning unique addresses to each device.

  10. Q: Are there any application examples for PCA9534ADBR? A: Yes, PCA9534ADBR can be used in various applications such as LED displays, keypad interfaces, and general-purpose I/O expansion.

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