PCAL6524EVJ
- Created at: 2023-11-08 17:36:50 , by WikiIC
- Updated at: 2023-11-08 17:36:50
- Views: 9
PCAL6524EVJ
Product Overview
- Category: Integrated Circuit
- Use: GPIO Expander
- Characteristics: Low-voltage translating I2C-bus/SMBus I/O expander with interrupt and reset
- Package: 24-pin HVQFN package
- Essence: The PCAL6524EVJ is a versatile GPIO expander designed to provide additional general-purpose input/output (GPIO) pins for microcontrollers or other devices.
- Packaging/Quantity: Available in tape and reel packaging, with 250 units per reel.
Specifications
- Supply Voltage: 1.65V to 3.6V
- I/O Voltage: 1.8V to 3.6V
- Number of I/O Pins: 24
- Interrupt Output: Open-drain output
- Operating Temperature Range: -40°C to +85°C
- Interface: I2C-bus/SMBus compatible
Detailed Pin Configuration
The PCAL6524EVJ has a total of 24 pins, each serving a specific purpose. Here is the detailed pin configuration:
- SDA: Serial Data Input/Output
- SCL: Serial Clock Input
- INT: Interrupt Output
- RESET: Active-Low Reset Input
- VDD: Supply Voltage
- GND: Ground 7-24. GPIO0-GPIO17: General-Purpose Input/Output Pins
Functional Features
- Low-voltage level translation between I2C-bus/SMBus and GPIO signals
- Programmable polarity inversion for input pins
- Configurable interrupt output
- Software reset function
- Internal power-on reset
- Noise filtering on inputs
- Schmitt-trigger action on all inputs
Advantages and Disadvantages
Advantages: - Provides additional GPIO pins for devices with limited I/O capabilities - Low-voltage level translation simplifies interfacing between different voltage domains - Configurable interrupt output allows efficient event-driven designs - Noise filtering and Schmitt-trigger action enhance signal integrity
Disadvantages: - Limited to 24 I/O pins, may not be suitable for applications requiring a larger number of GPIOs - Requires I2C-bus/SMBus interface support from the host device
Working Principles
The PCAL6524EVJ operates by translating low-voltage I2C-bus/SMBus signals to corresponding GPIO levels. It acts as an intermediary between the microcontroller or host device and external peripherals. The device can be configured through the I2C-bus/SMBus interface, allowing the user to set pin directions, polarity inversion, interrupt behavior, and other parameters.
Detailed Application Field Plans
The PCAL6524EVJ finds applications in various fields, including but not limited to:
- Consumer Electronics: Adding extra I/O pins to smart home devices, remote controls, and wearable gadgets.
- Industrial Automation: Expanding the I/O capabilities of programmable logic controllers (PLCs) and industrial control systems.
- Automotive: Integrating additional GPIOs for automotive infotainment systems, lighting controls, and sensor interfaces.
- Internet of Things (IoT): Enabling connectivity and control for IoT devices such as smart sensors, actuators, and edge computing platforms.
Detailed and Complete Alternative Models
- PCA9538E: 8-bit I2C-bus/SMBus I/O expander with configurable interrupt output.
- MCP23017: 16-bit I2C-bus I/O expander with interrupt output and cascading capability.
- MAX7313: 16-bit I2C-bus/SMBus I/O expander with interrupt output and LED driver functionality.
These alternative models offer similar functionality to the PCAL6524EVJ and can be considered based on specific requirements and design constraints.
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List 10 common questions and answers related to the application of PCAL6524EVJ in technical solutions
Sure! Here are 10 common questions and answers related to the application of PCAL6524EVJ in technical solutions:
Q: What is PCAL6524EVJ? A: PCAL6524EVJ is a device evaluation board for the PCAL6524, which is an I2C-bus controlled 24-bit General Purpose Input/Output (GPIO) expander.
Q: What is the purpose of PCAL6524EVJ? A: PCAL6524EVJ is used to evaluate the functionality and performance of the PCAL6524 GPIO expander in various technical solutions.
Q: How does PCAL6524EVJ connect to other devices? A: PCAL6524EVJ connects to other devices using the I2C bus interface, allowing communication with a microcontroller or other I2C-compatible devices.
Q: Can PCAL6524EVJ be used in industrial applications? A: Yes, PCAL6524EVJ is suitable for industrial applications as it operates over a wide temperature range and supports high voltage levels.
Q: What are the key features of PCAL6524EVJ? A: Some key features of PCAL6524EVJ include 24 GPIO pins, interrupt output, programmable pull-up resistors, and configurable input/output direction.
Q: Is PCAL6524EVJ compatible with different microcontrollers? A: Yes, PCAL6524EVJ is compatible with various microcontrollers that support the I2C bus protocol.
Q: Can PCAL6524EVJ be used in automotive applications? A: Yes, PCAL6524EVJ can be used in automotive applications as it meets the requirements for automotive-grade components.
Q: How can I program PCAL6524EVJ? A: PCAL6524EVJ can be programmed using the I2C bus interface by sending appropriate commands and data to configure its GPIO pins.
Q: Can PCAL6524EVJ handle both input and output signals? A: Yes, PCAL6524EVJ supports both input and output signals on its GPIO pins, allowing it to interface with various sensors, switches, LEDs, etc.
Q: Are there any application examples for PCAL6524EVJ? A: Yes, some common application examples for PCAL6524EVJ include keypad scanning, LED control, sensor interfacing, and general-purpose I/O expansion.
Please note that these answers are general and may vary depending on the specific requirements and use cases of your technical solution.
- https://chipmlcc.ru/product/details/nxp-usa-inc/pcal6524evj-5797508.html [PDF download, circuit diagram, pin configuration, detailed specifications, and more electronic component spot channels.]
- https://www.chipmlcc.com/product/details/nxp-usa-inc/pcal6524evj-5797508.html [PDF download, circuit diagram, pin configuration, detailed specifications, and more electronic component spot channels.]
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