An LF antenna driver device for passive entry/go (PEG) systems. It can drive up to eight low-frequency antennas (coils) to provide a wake-up and initialization channel to the key fob. Each driver is programmable up to a peak current of 1A (independent of battery voltage) and adjustable in 18 steps.
Integrated PEPS driver and transponder immobilizer base station
Internal precision oscillator for carrier generation
IC power supply voltage from 6V to 28V for PEPS operation
IC power supply voltage from 4V to 28V for immobilizer operation
Fast SPI interface (2Mbit/s) for data access and configuration
Transparent data input and data output pinsData transmission and control buffers
Flexible commands set with LOOP and CALL capability allowing for programmable polling mode without the need to re-load the data buffer. This mode does not require any host controller interaction.
Flexible GPIO pin for control of peripherals independent of host
ATAK51004-V2 provides a complete system showing an all Microchip® solution for Remote Keyless Entry (RKE), Passive Entry Passive Start (PEPS), and Immobilizer (IMM) applications. This system uses AES-128 encryption to protect the realistic multi-channel RF and LF communication protocols and supports 1-way RF communication for PEPS.