Micro-controller Voltage problem

[Haseeb Ahmed]

Aoa

 

I want to know ” How much Micro controller 8051 pcb can hold maximum voltage” ??? Can it hold up to 17 to 18 volts??? 

[dagakshay]

it depends on controller to controller…

like at89s51 operating range 4.0v-5.5v

 

so it is obvious it cant hold 17 to 18 Volts…..

[Santosh]

 I dunno exactly but it may be Possible provided you use very high resistances to Limit current flowing to the 8051 to the nominal value.

But this is pretty complicated and y’d u want to use 18 V when 5V is sufficient?

just enquire others to be sure.

[Author]

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