Power Noise Immunity PIC,MSP430 or ARM?

[rhnrgn]

Is there any immunity differences between this products? Can you tell MSP30 is better than PIC? I know that PIC uses older technology then others.

I am using dsPic30f6015 and i have problems about EMC issues. I did eveything but could not remove problem.

I am planing to change this MCU. What do you suggest?

the problem is: flickers and burst at power line causes resets at MCU. I used EMC filters, X and Y caps, ferrite beads, RC filters external power isolators etc. but nothing helped.

 

[abc_de]

i think problem is some thing else not MCU

 

[Terminator3]

Try using oscilloscope and see what's going on with voltage lines on your processor. I am assure it is best method. USB oscilloscope and DSO oscilloscope, helped me alot with low frequency signals, power lines, data lines, etc. problems. Cheap, frequency is enough to find all kinds of problems.

Also: Maybe you make too much isolation protection and there is no real ground connection, so your board works as an antenna?

 

[PA3040]

Ultimately, prevention of EMI within a particular application remains the responsibility of the embedded designer. This begins with the implementation of good board design practices including proper PCB layout and grounding, limiting trace lengths, placement of electrical components, as well as selection of the most EMI resilient silicon products.