PCF7961MTT/D1AC13J

RF Transmitter Overview

The PCF7961MTT/D1AC13J is an integrated single-chip solution for vehicle immobilizer and keyless entry systems. It combines a low-power 8-bit MRKII RISC controller with a secure transceiver and UHF transmitter. The device supports non-contact communication via external coils and features factory-programmed unique identification. It utilizes HT2 (48-bit) or HT3 (96-bit) encryption algorithms for secure authentication between the tag and base station, ensuring robust anti-theft protection.

RF Transmitter Feature Summary

• Integrates IMMO and keyless entry functions on a single chip
• Supports secure non-contact authentication using encrypted random numbers
• Includes a factory-programmed unique serial number for IDE identification
• Features a built-in UHF transmitter for remote keyless operation

RF Transmitter Applications

• Vehicle immobilizer systems
• Passive Entry Passive Start (PEPS) key fobs
• Remote Keyless Entry (RKE) transponders
• Secure automotive access control tags

RF Transmitter Procurement Notes

Verify the specific ordering suffix D1AC13J to confirm the required encryption mode and memory configuration. Ensure compatibility with the target base station's frequency requirements, typically 315MHz or 434MHz. Confirm that the procurement channel provides genuine NXP Semiconductors products with valid traceability documentation to guarantee security integrity in automotive applications.

RF Transmitter Selection Notes

Select this component when a combined immobilizer and keyless entry solution is required. It is suitable for designs needing a low-power RISC controller with integrated RF capabilities. Consider the package size and pinout if space constraints exist. Verify that the application requires the specific security level provided by the HT2 or HT3 encryption standards supported by this variant.

RF Transmitter Part Context

This part belongs to the PCF7961 family of NFC/RFID tags and transponders designed for automotive security. The series is known for integrating microcontroller and RF functions into a single silicon die. Variants within the family differ primarily in their factory-programmed security keys, memory options, and specific application configurations for different vehicle platforms.

RF Transmitter Replacement Considerations

Direct substitutes are limited due to proprietary encryption and firmware integration. Check NXP datasheets for other PCF7961 variants with matching pinouts and similar security profiles. Cross-referencing with older PCF796x models may require validation of interface compatibility and power consumption differences.