PEPS Keyless Entry Solution Based on NXP NCF29A1

PEPS (Passive Entry & Passive Start) is gradually developing and growing as a new generation of anti-theft technology, which has gradually entered the mid-range market from the premium car market. Not only high-end car manufacturers such as Mercedes-Benz and BMW have widely adopted PKE, but also mid-range models such as Ford Mondeo, Nissan's Skyline and the new Mazda have adopted this technology.

PEPS is not a traditional key, but a smart key, similar to a smart card. When the driver steps into the designated range, the system automatically opens the door by identifying the driver if he or she is legally authorized to do so. Once in the car, the driver only needs to press one button to activate the ignition switch.

NXP Semiconductors, a global leader in secure, connected cars, recently introduced the world's first true single-chip smart car access solution, the NCF29A1, which combines a keyless system (PKE), remote RF transmitter and anti-theft locking system in an HVQVN32 package.

With this ultra-compact device, a new key shape and form factor can be implemented in a smartphone, smartwatch or smartphone case to support the refinement of automotive access control systems through mobile devices. Unlike traditional solutions in the market, the NCF29A1 enhances the automotive customer experience by enabling, for example, a welcome light or leave auto lock function with a longer control range and lower energy consumption.

Pinnacle's PEPS solution is based on NXP's NCF29A1, and with its compact design, it can be embedded in a watch for convenient keyless entry and one-touch start.

►Product physical picture

►Solution cube diagram

►Core technical advantages

①Automatic unlocking within 2 meters

②Backup unlocking function when the key has no power

③In-car positioning, keyless start

④Backward compatible with RKE (Remote Keyless Entry)

►Specifications

①NCF29A1 has excellent LF (low frequency) front-end sensitivity and low quiescent current for longest battery life;

②Distance definable to limit the activation range and control the actual distance of the remote control function which is a matter of security;

③ single chip solution including IMMO transponder, UHF transmitter and RISC controller enables new security features;

④Adapts to various frequencies below 1 GHz in different regions, from 310 to 447 MHz, 868/915 MHz (configurable on request);

⑤ Allowing multi-channel RF frequency hopping operation, better anti-interference performance and higher stability;

⑥ positioning of the key (within 5 cm error) through a 3D LF interface using RSSI (Received Signal Strength Indicator) in a wide dynamic range;

⑦ minimum number of external components, which can help system suppliers and vehicle manufacturer customers to further reduce costs;

⑧ industry widely accepted AES algorithm that helps to effectively prevent key cloning/vehicle theft;

⑨ Ultra-low power programmable µC cores that can be flexibly configured.