Description

The PCF7936AA is a programmable Security Transponder designed for contactless authentication and memory access in vehicle immobiliser applications. It features excellent device sensitivity, short authentication time, and a 256-bit non-volatile memory. The transponder also supports read and write protection of data and has two Read Only modes for compatibility with common systems. The device is powered by the RF field generated by the basestation and is assembled in a small leadless stick-shaped plastic package.

Specifications and features

• Programmable Security Transponder
• 64/32-bit mutual authentication
• 32-bit unique device identification number
• 48-bit Secret Key
• Fast authentication, 39 ms
• 128-bit non-volatile user memory (EEPROM)
• EEPROM access in plain or cipher mode
• EEPROM read/write protection capabilities
• Read Only modes for downward compatibility
• Excellent device sensitivity in read and write mode, 35 μT
• 20-year EEPROM data retention
• Leadless stick-shaped plastic package

Application Scenarios

The PCF7936AA transponder is commonly used in vehicle immobiliser systems to enable contactless authentication and secure memory access. It can be applied in automotive industries, car security systems, and vehicle tracking systems.

Comparison

• High device sensitivity for easy application and outstanding performance
• Large non-volatile memory capacity for user data storage
• Supports advanced prepersonalisation techniques
• Read and write protection of data for enhanced security
• Read Only modes for compatibility with common systems

• Requires power supply from the basestation
• Only compatible with HITAG 2 systems