I BS R&D
3
11.06.2018
2
Main components
2.1 UHF-Transmitter Token
The Token NCF29A1 is an extremely single chip solution that incorporates a Security
Transponder, UHF Transmitter RISC controller on the same chip. The device provides a fully
integrated fractional-N phase locked loop (PLL) frequency synthesizer and a power amplifier
to drive an external antenna. The Token is especially designed for use in the ISM frequency
bands.
2.2 Microcontroller
FXLS8962AF
The FXLS8962AF is a compact 3-axis MEMS accelerometer designed for use in a wide
range of automotive (convenience and security), industrial, and medical IOT applications that
require ultra-low-power wake-up on motion.
FXLS8962AF is available in a 2 mm x 2 mm x 0.95 mm 10-pin DFN package with 0.4 mm
pitch and wettable flanks. The device is qualified to AEC-Q100 and operates over the
extended –40 °C to +105 °C temperature range.
The combination of sensor performance, system power-saving features and extended
overtemperature-range performance makes FXLS8962AF an ideal accelerometer for motion
sensing in the automotive industry.
3
Functionality
3.1 Remote keyless entry
-
Lock, Unlock, Trunk unlock
-
Generating and transmitting an RF bit stream for remote entry functions
3.2 Transponder Start authentication
Communicating bi-directionally, LF/LF for authentication / remobilization if keyless vehicle
not work due to flat battery
.