topic Re: VDD Decoupling capacitor on LPC54604 in LPC Microcontrollers

VDD Decoupling capacitor on LPC54604

liron_homsky — Tue, 16 Jun 2020 11:03:46 GMT

Hi,

VDD decoupling capacitors, according to the datasheet:

"Position the decoupling capacitors of 0.1 μF and 0.01 μF as close as possible to the VDD pin. Add one set of decoupling capacitors to each VDD pin.:

This means at least 1+12 = total 13 capacitors!

In the EVB there are 1x 4.7uF and 5x0.1uF total 6 capacitors.

Should I follow the DS or there is some flexibility here?

BR,

Liron

Re: VDD Decoupling capacitor on LPC54604

Omar_Anguiano — Wed, 17 Jun 2020 19:35:53 GMT

Hello Liron Homsky

I suggest you refer the schematic of the EVB with 4.7uF, 0.1uF, and 0.1uF capacitors. The values from the datasheet could be an option but I suggest the values from the EVB schematic.

Let me know if this is helpful if you have more questions do not hesitate to ask me

Best regards,

Omar

Re: VDD Decoupling capacitor on LPC54604

liron_homsky — Thu, 18 Jun 2020 06:43:00 GMT

Thank you Omar.

It was helpful to realize this conflict.

Liron