If you’ve worked with microcontrollers or digital logic chips you probably know that you’re supposed to add a small capacitor in between the voltage and ground pins for decoupling purposes.

Most ICs need to be decoupled from their power supply, usually with a 0.1uF capacitor between each power pin and ground. Decoupling is usually used to remove noise and to smooth power fluctuations.

One key factor while adding supply ripple is the presence of a decoupling capacitor at the supply pin. Systems usually have decoupling capacitors on all their supplies to decouple the power supply ...

Fig 5: Standard Cell Placement before Decoupling Capacitor/Filler Addition After the standard cells (for logic implementation) are placed in the rows, the next step is to add decoupling capacitors to ...