Features

General Features

  • Integrated PEPS Driver and Transponder Immobilizer Base Station
  • Internal High-Precision Oscillator for Carrier Generation (±0.5%)
  • Internal 24 MHz XTAL Oscillator to Allow ≤ ±80 ppm Tx Carrier Accuracy
  • 2.25 MHz Clock Output Based on Internal Oscillator or with XTAL Accuracy
  • IC Power Supply Voltage from 6V to 28V for PEPS Operation (VBATT = 7V)
  • IC Power Supply Voltage from 4V to 28V for Immobilizer Operation (VBATT = 5V)
  • Fast SPI Interface (2 Mbps) for Data Access and Configuration
  • PEPS and Immobilizer Tx Mode Supports Data Rates of 3.9 Kbps and 7.8 Kbps Manchester, BPLM, and 7.8 kSymbols/s and 15.6 kSymbols/s NRZ
  • FDX/HDX Immobilizer Receive Mode Supports Data Rates of 3.9 Kbps and 7.8 Kbps Manchester and 7.8 kSymbols/s and 15.6 kSymbols/s NRZ
  • 4 Flexible GPIO Pins:
    • CLKOUT
    • BCNT
    • MACT
    • IRQ
  • Transparent Data Input and Data Output Pins for Rx and Tx Operation
  • Very Low Current Consumption of 8.5 µA in OFF Mode
  • 25 μA Standby Current in Sleep Mode Waiting for External Trigger via SPI
  • QFN 7x7 48 with Wettable Flanks
  • Programmable LF Carrier Frequency 114 kHz … 138 kHz
  • FDX and HDX Immobilizer Operation Possible on All Coils
  • Supports Six Door Handle Inputs

PEPS Driver Features

  • Output Driver Stages are Protected Against Electrical and Thermal Overload
  • Diagnostic Capabilities for Short to Battery, Ground, Between Antenna Terminals, Open on All Drivers and Antenna Detuning
  • Over Temperature Warning Flag with Margin to Over Temperature Shut Down
  • Low EMI Sinus (-55 dBC) or Switched Square Wave Mode for Driver Output
  • Integrated Boost Converter With External Boost Transistor and Current Sense Resistor for High LF-Drive Level
  • Antenna Isolation Between Operated/Non-Operated Antennas ≥ 60 dB
  • Antenna Isolation Between Operated/Non-Operated Antennas ≥ 30 dB in Shared Driver Applications
  • 6 Driver Outputs Delivering Up to 34 Vpp / 2.5 App
  • Drivers Can Be Operated in Parallel, in Single-Ended and Full-Bridge Configurations Supporting up to 5 App Antenna Current and 68 Vpp Antenna Voltage
  • Current Measurement Integrated into All Drivers
  • Programmable Regulated Current Range 0.2 App to 2.5 App Adjustable in Small-Sized Steps
  • Programmable Unregulated Current Range 0.04 App to 2.5 App
  • ±3 % PEPS Drive Current Accuracy With Internal Current Measurement Using 2.5 App Antenna Current in Single Driver Configuration
  • Sinusoidal, Square Wave or Custom Wave Form LF Driver Output
  • 2 Antennas Can Be Operated Simultaneously at Different Antenna Currents
  • 3 Antennas Can Be Operated Simultaneously
  • Start-Up Time From IDLE to Tx Mode, Mode ≤ 1.5 ms
  • Supports Configurable Autonomous Polling
  • Configurable 256 Byte Buffer for Commands and Data

Immobilizer Base Station Features

  • All PEPS Drivers can be Used for Immobilizer Operation
    • Max driver voltage per driver = 30 Vpp at VBATT = 7V
    • Max driver voltage per driver = 18 Vpp at VBATT = 5V
  • Narrow-Band Direct Conversion Digitized Receiver for High Noise Immunity
  • 64-Byte Rx Buffer
  • Tx and Rx Operation in Buffered or in Transparent Mode
  • Sinusoidal Antenna Drive
  • Single-Ended and Differential Antenna Operation
  • FDX Support on All Coils with ASK/BPLM Downlink and Load Modulation Uplink
  • HDX Support on All Coils with ASK/BPLM Downlink and BPSK Uplink