The NXP PCF7991AT/1081 is a state-of-the-art transponder IC designed for use in passive keyless entry (PKE) and remote keyless entry (RKE) systems within the automotive industry. This compact and highly integrated device is engineered to provide secure communication between a vehicle and its corresponding key fob, enhancing convenience and security for the end-user.

Key Features

• Multi-protocol Support: The PCF7991AT/1081 supports multiple frequency ranges including LF (Low Frequency) and HF (High Frequency), making it versatile for various communication protocols.
• Enhanced Security: Equipped with advanced encryption and mutual authentication capabilities, it ensures secure data exchange, preventing unauthorized access and cloning attempts.
• Low Power Consumption: Designed for battery-operated devices, it operates with minimal power consumption to maximize the battery life of key fobs.
• High Sensitivity: The IC features high sensitivity and robust signal processing, which allows for reliable operation even under challenging environmental conditions.
• Flexible Interface: It includes a versatile serial interface for easy integration with microcontrollers, enabling seamless communication with the vehicle's onboard systems.

Applications

The PCF7991AT/1081 is primarily used in automotive applications for implementing passive keyless entry and remote keyless entry systems. Its robust design and secure communication protocols make it an ideal choice for car manufacturers looking to enhance the user experience through advanced keyless entry solutions. Additionally, its capabilities can be extended to other applications that require secure wireless communication and authentication, such as access control systems and secure asset tracking.

Technical Specifications

• Supply Voltage: 2.0V to 3.6V
• Operating Frequency: 100 kHz to 150 kHz for LF, 10 MHz for HF
• Temperature Range: -40°C to +85°C
• Packaging: SO14

With its robust feature set and flexible applications, the NXP PCF7991AT/1081 is a leading choice for automotive manufacturers and system designers seeking a reliable and secure transponder IC solution.