PCF7991AT/1081/M

The PCF7991AT/1081/M is a highly integrated RFID reader and writer chip designed for low-frequency (LF) applications. It operates at 125 kHz and is primarily used in electronic tagging systems, such as animal identification, access control, and various industrial applications. The chip features a built-in microcontroller, ensuring efficient processing and communication with RFID transponders.
Key characteristics include its ability to read and write data from compatible transponders, a flexible interface for easy integration with other devices, and low power consumption, making it suitable for battery-operated applications. The PCF7991AT also supports various communication protocols, enhancing its versatility in different system designs.
Overall, the PCF7991AT/1081/M is ideal for applications requiring reliable and efficient RFID solutions, with features that cater to both performance and energy efficiency.

The PCF7991AT/1081/M is a versatile RFID reader and transponder interface IC designed for automotive and industrial applications. Key features include:
1. RFID Functionality: Supports ISO 15693 and ISO 14443 type A/B standards for contactless communication.
2. Multi-Protocol Support: Can interface with various transponder types, making it adaptable for different applications.
3. Low Power Consumption: Designed for energy efficiency, ideal for battery-operated systems.
4. Integrated SPI Interface: Facilitates easy communication with microcontrollers and other digital systems.
5. Frequency Range: Operates at 13.56 MHz, a common frequency for RFID applications.
6. Flexible Antenna Connection: Allows for external antenna configurations to optimize range and performance.
7. Temperature Range: Suitable for operation in harsh environments with a wide temperature range.
8. Security Features: Includes built-in encryption and authentication capabilities for secure data transmission.
These features make the PCF7991AT/1081/M suitable for applications like keyless entry systems, access control, and asset tracking.

The PCF7991AT/1081/M is packaged in a VQFN (Very Thin Quad Flat No-lead) package, specifically designed for compact applications. This package type offers low profile, small footprint, and good thermal performance, making it suitable for automotive and RFID applications.

The PCF7991AT/1081/M is a highly integrated RFID transponder IC designed for automotive applications, particularly for keyless entry systems. It features a total of 8 pins.
Pin functions are as follows:
1. VDD: Supply voltage.
2. GND: Ground reference.
3. RF: RF receiving and transmitting connections.
4. SW: Switch input for various functionalities.
5. GPIO: General-purpose I/O for additional features or connections.
6. CLK: Clock input for timing control.
7. RESET: Reset signal input for initializing the chip.
8. ANT: Antenna connection for RF communication.
The PCF7991AT integrates a microcontroller and memory, enabling it to process signal data and communicate efficiently with the RFID reader, making it ideal for secure keyless entry systems in vehicles.

The PCF7991AT/1081/M is manufactured by NXP Semiconductors. NXP is a global semiconductor company that specializes in various technologies, including automotive, security, and connectivity solutions. It focuses on innovating in areas such as wireless communication, smart devices, and embedded systems. NXP's products are widely used in applications ranging from automotive and industrial to consumer electronics. The company is known for its commitment to quality and its extensive portfolio of integrated circuits and solutions that cater to a diverse array of markets.

The PCF7991AT/1081/M is primarily used in automotive applications for tire pressure monitoring systems (TPMS), keyless entry, and vehicle immobilizers. It supports NFC and RFID technology, enabling secure vehicle access and communication with smartphones. Additionally, it can be employed in logistics for asset tracking and inventory management, as well as in smart home devices for secure authentication and control.

The PCF7991AT/1081/M chip is primarily used in automotive applications for tire pressure monitoring systems (TPMS). Equivalent products include the NXP PCF7991AT, NXP PCF7991BT, and other TPMS-specific chips from manufacturers like STMicroelectronics (e.g., ST25R) and Texas Instruments. Always verify compatibility based on specific application requirements and feature sets.