Before revision: A power-on reset(PoR, POR) generator is a microcontroller or microprocessor peripheral that generates a reset signal when power is applied to the device.It ensures that the device starts operating in a known state ] .
After revision: Editing Power-on reset/downloads/en/devicedoc/31003a.pdf Microchip - reset, retrieved 27 October 2011</ref>|state ] .