Passive Keyless Entry

Passive keyless systems perform two simple functions: opening a door or trunk hatch with a touch on the handle and allowing the driver to start and stop the car with the push of a button. To realize these functions, a technologically advanced system is required that includes a new generation HF/LF fob and an in-cabin base station with its associated set of LF antennas plus touch sensors. The Si401x is an excellent choice for a single IC fob, integrating the MCU, AES-128 encryption, and RF transmitter. Silicon Labs’ EZRadioPRO® transceiver, complimented by the ultra low power C8051F98x/9x MCU offers a very high communication link budget (>130 dB) as well as very low power while in standby mode to preserve battery life.


Solutions for Passive Keyless Entry


Silicon Labs Solutions   Customer Benefits

Wireless Range and Robustness: Single-chip remote control IC, embedded MCU, crystal-less design; AES-128 H/W encryption, ultra low power standby, AEC-Q100 qualified

Extremely small design, minimal BOM and maximum performance and programmability

Integrated ISM, OOK, FSK single channel receivers (240-960 MHz) with -118 dBm sensitivity, high blocking, low IMD, digital RSSI, frequency hopping, AGC , low power and wakeup timer

Fully integrated RF solution for cost sensitive sub-GHz applications including in-vehicle RKE/PKE and TPMS

Integrated Sub-GHz RF Transceiver MCU: Industry’s lowest power single-chip wireless MCU, lowest power consumption in all modes: active, sleep and deep sleep

Extended range, higher bandwidth and lower overall power consumption

Precision Processing: Microcontroller with embedded CAN/LIN, AEC-Q100 qualified

Easily implement industry standard CAN/LIN connectivity

Human Interface Capabilities: Low power MCU with capacitive sensing, wake-on-touch, and LED lighting control

Enables stylish and differentiated user interfaces

 

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