PCF7939MA/CABC0800

The PCF7939MA/CABC0800 is a transponder IC commonly used in automotive keyless entry systems and immobilizer systems. It provides secure communication between the vehicle and the key fob, ensuring reliable and encrypted data transmission.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• VSS: Ground
• VDD: Positive Power Supply
• CLK: Clock Input
• DAT: Data Input/Output
• RST: Reset Input
• ANT: Antenna Connection
• GND: Power Ground
• VBAT: Backup Power Supply
• OSC: Oscillator
• XTAL1: Crystal Oscillator Input
• XTAL2: Crystal Oscillator Output

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the PCF7939MA/CABC0800 IC for a visual representation.

Key Features

• Automotive Transponder IC: Designed for use in automotive keyless entry and immobilizer systems.
• Secure Communication: Provides encrypted data transmission between the vehicle and key fob, ensuring security.
• Low Power Consumption: Operates with low power consumption, suitable for battery-powered applications.
• Wide Operating Voltage Range: Supports operation across a wide voltage range for compatibility with various vehicle systems.
• Compact Package: Available in a compact and robust package suitable for automotive environments.

Note: For detailed technical specifications, please refer to the PCF7939MA/CABC0800 datasheet.

Application

• Automotive Keyless Entry Systems: Ideal for use in keyless entry systems to enable secure and convenient vehicle access.
• Immobilizer Systems: Used in vehicle immobilizer systems to prevent unauthorized vehicle operation.
• Security Systems: Suitable for various automotive security applications requiring secure communication.

Functionality

The PCF7939MA/CABC0800 transponder IC facilitates secure and efficient communication between vehicle key fobs and automotive systems, ensuring reliable operation and enhanced security.

Usage Guide

• Power Supply: Connect VDD (Pin 2) to the positive power supply and VSS (Pin 1) to ground.
• Antenna Connection: Connect the ANT (Pin 5) to the vehicle's antenna system for communication.
• Data Handling: Use CLK (Pin 3) and DAT (Pin 4) for clock input and data input/output, respectively.

Frequently Asked Questions

Q: What is the purpose of the PCF7939MA/CABC0800 in automotive systems?
A: The PCF7939MA/CABC0800 serves as a transponder IC in automotive keyless entry and immobilizer systems, enabling secure communication between the vehicle and key fob.

Q: Is the PCF7939MA/CABC0800 compatible with all vehicle makes and models?
A: Compatibility may vary. It is recommended to consult with vehicle manufacturers or refer to specific system requirements for compatibility information.