Overview
The PCF7991AT/1081/M is a fully integrated Advanced Basestation IC (ABIC) designed by NXP USA Inc. for use in car immobilizer systems. This IC provides read and write access to identification transponders, particularly those from the Philips transponder family (PCF79xx) and other types operating at 125 kHz using Amplitude Shift Keying (ASK) for write and Amplitude/Phase Modulation (AM/PM) for read operations. The device is optimized for high-performance basestations with a minimal external component count, making it ideal for immobilizer read/write and read-only systems.
Key Specifications
| Attribute | Specification |
|---|---|
| Supply Voltage | 4.5V to 5.5V |
| Operating Temperature Range | -40°C to +85°C |
| Storage Temperature Range | -65°C to +125°C |
| Package Style | SOIC-14 |
| Mounting Method | Surface Mount |
| Frequency Range | 4 MHz to 16 MHz |
| RFID IC Type | Read, Write |
| Current Consumption | 7 µA |
| No. of Pins | 14 Pins |
Key Features
- High degree of integration with minimal external component count.
- Powerful antenna driver/modulator and low-noise adaptive sampling time demodulator.
- Programmable filters, amplifier, and digitizer for optimized system performance.
- Three-wire microcontroller interface for programming and bidirectional communication with transponders.
- Adaptive Sampling Time (AST) demodulation technique to extend system operation range and eliminate zero amplitude modulation response.
- Supports Idle and Power-down modes for power saving.
- Serial interface for issuing commands and reading/writing device configuration data and transponder data.
Applications
- Car immobilizer systems.
- Read/write and read-only transponder systems.
- Remote keyless entry systems.
- Other RFID applications requiring high-performance basestations.
Q & A
- What is the primary function of the PCF7991AT/1081/M IC?
The primary function is to provide read and write access to identification transponders in car immobilizer systems.
- What is the operating temperature range of the PCF7991AT/1081/M?
The operating temperature range is -40°C to +85°C.
- What package style does the PCF7991AT/1081/M come in?
The package style is SOIC-14.
- What is the frequency range supported by the PCF7991AT/1081/M?
The frequency range is 4 MHz to 16 MHz.
- Does the PCF7991AT/1081/M support power-saving modes?
Yes, it supports Idle and Power-down modes for power saving.
- How does the PCF7991AT/1081/M communicate with a microcontroller?
It communicates via a three-wire digital interface.
- What demodulation technique does the PCF7991AT/1081/M use?
It uses the Adaptive Sampling Time (AST) demodulation technique.
- Is the PCF7991AT/1081/M RoHS compliant?
Yes, it is RoHS compliant.
- What is the current consumption of the PCF7991AT/1081/M?
The current consumption is 7 µA.
- Can the PCF7991AT/1081/M be used in other RFID applications?
Yes, it can be used in other RFID applications requiring high-performance basestations.
