Overview
The PCF7991AT/1081/UZ, produced by NXP USA Inc., is a fully integrated Advanced Basestation IC (ABIC) designed primarily for car immobilizer systems and other RFID applications. This IC provides read and write access to identification transponders, particularly those in the Philips transponder family (PCF79xx) and other transponder types operating at 125 kHz. It employs Amplitude Shift Keying (ASK) for write operations and Amplitude and Phase Modulation (AM/PM) for read operations.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Part Number | PCF7991AT/1081/UZ |
| Description | IC RFID TRANSP 4-16MHZ 14SOIC |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) |
| Packaging | Tape & Reel (TR) |
| Operating Frequency | 125 kHz |
| Temperature Range | -40°C to +85°C |
| Interface | Three-wire microcontroller interface (configurable for two-wire operation) |
Key Features
- Fully integrated single chip basestation with robust antenna coil power driver stage and modulator.
- Compatible with Philips transponder family (PCF79xx) and other transponder types.
- Adaptive Sampling Time (AST) demodulation technique to extend system operation range and eliminate zero amplitude modulation response.
- Programmable filters, amplifier, and digitizer for optimized receiver characteristics.
- Three-wire digital interface for communication with microcontroller (configurable for two-wire operation).
- Supports Idle and Power-down modes for power saving.
- Integrated oscillator, synchron demodulator, bandpass filter, and phase measurement circuitry.
Applications
- Car immobilizer systems.
- RFID and transponder systems.
- Remote keyless entry systems.
- Wireless access and monitoring systems.
Q & A
- What is the primary function of the PCF7991AT/1081/UZ IC?
The primary function is to provide read and write access to identification transponders in car immobilizer and RFID systems. - Which transponder family is the PCF7991AT/1081/UZ compatible with?
It is compatible with the Philips transponder family (PCF79xx) and other transponder types operating at 125 kHz. - What modulation techniques does the IC use?
The IC uses Amplitude Shift Keying (ASK) for write operations and Amplitude and Phase Modulation (AM/PM) for read operations. - What is the Adaptive Sampling Time (AST) demodulation technique used for?
The AST demodulation technique extends the system operation range and eliminates the effect of zero amplitude modulation response from the transponder. - How does the IC communicate with a microcontroller?
The IC communicates via a three-wire digital interface (configurable for two-wire operation). - What power-saving modes does the IC support?
The IC supports Idle and Power-down modes for power saving. - What is the operating temperature range of the PCF7991AT/1081/UZ?
The operating temperature range is -40°C to +85°C. - What is the package type of the PCF7991AT/1081/UZ?
The package type is 14-SOIC (0.154", 3.90mm Width). - How is the IC packaged?
The IC is packaged in Tape & Reel (TR). - What are some common applications of the PCF7991AT/1081/UZ?
Common applications include car immobilizer systems, RFID systems, remote keyless entry systems, and wireless access and monitoring systems.
