4 KeeLoq Technology

Microchip Technology stands as a major supplier in the security industry. Our use of the proprietary KeeLoq technology is instrumental in enhancing security across various applications for leading manufacturers worldwide.

KeeLoq technology is a code-hopping technology, which means that each transmission is unique with changes occurring at every button press. The core of this technology involves a counter that increments with each button press, followed by the addition of an encryption layer to the packet. This system operates on an event-driven basis, where the event corresponds to the pressing of a button on the transmitter. In the extended implementation of the ultimate KeeLoq technology, a timer replaces the counter. This timer runs at the same rate as a corresponding timer on the receiver side.

The following shows a comparison table with all available KeeLoq technology implementations.