Motion sensors (MD) are often used to switch on lights when a person enters a room, by using infrared sensors to detect body heat. A motion detector may itself possess a lighting control function, or it may send a signal to a central control panel that controls the lights.
Renesas' 8/16-bit microcontrollers that are equipped with ADC (Analog to Digital Converter) for interfacing with the infrared sensors, and other necessary functions, offer a range of solutions for motion detectors in a lighting system.
System Block Diagram
|Sensor control||MCU||78K0/Kx2||8-bit AllFlash microcontroller: wealth of on-chip peripheral functions such as a reset circuit and on-chip oscillator, 20 MHz operation, low power consumption, 30 to 80 pins|
|78K0/Kx2-L||8-bit AllFlash microcontroller: wealth of on-chip peripheral functions such as a reset circuit, on-chip oscillator, and a clock function, 20 MHz operation, ultra-low power consumption, 16 to 48 pin|
|78K0S/Kx1+||8-bit AllFlash microcontroller: wealth of on-chip peripheral functions such as a reset circuit and on-chip oscillator, 10 to 30 pins|
|R8C Family||Timer, 5 V operation, and small package|
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