remote keyless

Remote Keyless Entry: The Controller Entry Device manages the Immobilizer communication and push button interaction. During sleep state the devices enters a special low power mode with only 60nA current consumption. By pressing a push button the device wakes up and controls an external UHF transmitter or transceiver. Security keys and rolling codes could be stored in the integrated EEPROM memory. This TI s accessible over the LF interface without support from the battery in the key fob. The Controller Entry Device offers a special battery charge mode; to achieve faster charging it’s recommend to add a charging amplifier device on the base station side. The external resonant circuit with a 74A coil and a resonant capacitor could be trimmed to the correct resonant frequency with the integrated trimming capability achieving an easy way to eliminate part tolerances.