I am working on a silabs C8051 MCU. It has a sleep mode which should be woken up by a reset. The mcu should start working (wake up from sleep) when the button in connected to Ground (Otherwise it is on the air). What is the easiest way to give a reset signal to the reset pin (or any other way) to restart the MCU?
You usually pull the reset pin for 2 machine cycles to reset the 8051 Microcontroller. You could do that easily using a push button, as per the following circuit.
This would straight away, work.
But if you wish to have a better more universal reset button, you could follow the following schematic.
Both will do the job.