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[SOLVED] [PIC18F4520] Power Supply issue

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flote21

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Hello,

Reading the datasheet, it says that the recommended power supply is 5v. However this PIC is going to be connected to a 3v3 FPGA bank, and I am wondering if there is any way to configure the I/O pins to have Vout(max)=3v3 powering the chip with 5v. Is it possible?

Thanks!
 

milan.rajik

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PIC can be powered with 3.3V or a voltage dividers can be used on output pins of PIC which connect to FPGA or 3.3V devices or you cam use PIC18LF4520 which is a 3.3V device.
 

flote21

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Yes but the performance of the chip is lower and sometime is getting crazy...

you power the PIC with 3.3V rail.

- - - Updated - - -

Which is the difference btwn PIC18F4520 and PIC18LF4520? In theory both accept the same power range...

PIC can be powered with 3.3V or a voltage dividers can be used on output pins of PIC which connect to FPGA or 3.3V devices or you cam use PIC18LF4520 which is a 3.3V device.

- - - Updated - - -

Ok i get it. 18LF accept from 2-5v5 and 18F from 4v5-5v5

thanks
 

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