Do I need to provide a decoupling capacitor network for all the power pins of a microcontroller?

[newbie_hs]

I am using PIC32CZ8110CA90208-I8MX-SL3 in my design.The power supply section is given below.

You can see that it has:

• AVDD 1 pin
• VDDIO 15 pins
• VDDREG 3 pins

Do I need to provide a separate decoupling network for each pin or a single decoupling network for each rail?

What I mean is do I need to provide fifteen decoupling capacitors for VDDIO, three decoupling capacitors for VREG, etc.?

 

[barry]

why don’t you try reading the data sheet? perhaps the section entitled “Decoupling Capacitors”? The answer is right there.