You are here

Passive Keyless Entry Switch | Cypress Semiconductor


Design Considerations

In passive keyless entry systems, capacitive sensing is used for the detection of approach of driver to the car door handle using touch buttons or proximity. This sets up the trigger for encrypted communication between the keyfob located in the driver's pocket and the immobilizer in the car. Once authenticated, the driver is granted access to enter the car and drive away, without needing to take his key out of his pocket.

CapSense based systems provide waterproofing, environmental compensation and extended temperature performance (-40C to 125C) for use on the body of the car. These devices also provide lowest in class power consumption to enhance battery based performance.

Recommended Parts:

   • CY8C21312-24PVXA
   • CY8C21512-24PVXA
   • CY8C21334-12PVXE
   • CY8C21334-24PVXA
   • CY8C21534-12PVXE
   • CY8C21534-24PVXA


  • PSoC Creator

    PSoC Creator 是最先进的软件开发 IDE,带有创新性的图形设计编辑器,构成独特而强大的硬件/软件协同设计环境。

  • PSoC Designer

    PSoC Designer 是革新的集成设计环境 (IDE),您可以用来自定义 PSoC 以满足您特定的应用需求。PSoC Designer 软件可加快系统的建立和上市进程。