This ZMOTION Occupancy Sensor reference design demonstrates the use of Zilog’s ZMOTION microcontroller and key IXYS components as a passive infrared (PIR) sensorbased motion detector lighting system that can operate in two modes – Occupancy Mode and Vacancy Mode. Both modes can use either PWM or 1–10 V interfaces to control dimmable lighting ballasts. These ballasts typically drive fluorescent/compact fluorescent (CFL), High Intensity Discharge (HID), or High Power LED lighting. A DIP switch is used to select features and modes such as sensitivity, delay time, dim level, pass through mode, vacancy mode, and occupancy mode. Ambient light detection, AC power control, and certain advanced features offered by ZMOTION, such as Pass Through and Hyper sense, are also supported.