4.2 SAM L11

The SAM L11 software implements the APL of the Z-Wave protocol stack. The main task is to wait for a valid application frame (EVENT pin). In this case, the application frame is read out of the ATA8510 SRAM variables via SPI and afterwards decoded. In case a response is requested, the software writes the data to be transmitted back to the ATA8510 SRAM variables via SPI.

Due to the large 64-Kbyte Flash size of the SAM L11, there is enough space left to append additional command classes. Another plus of the SAM L11, is the embedded hardware/software cryptographic accelerator, which is useful for Z-Wave security.