RC Circuits: Charge/Discharge Times & Curve Shapes

t = -log((V-Vc)/V)R*C

63% change in charge for 1xRC

Charging time in seconds ….. μF x MΩ = seconds – eg 10μF x 0.1MΩ (100kΩ) = 1s

Charging time being the time it takes to CHARGE to 63% of the supply voltage (which is also the voltage required for logic high)