Hi Guys,
I’m looking at doing my first project with a dspic 33FJ64GP chip that wants a 3.3 Volt supply.
I’m sure I’ll have the supply sorted out with a fixed regulator LM2576.
My question has to do with the chip being connected to 5 Volt peripherals such as character LCDs
or other pic chips that use 5 Volt supply.
Does this mean you also need a 5 Volt regulator on the same board, and do level conversion for everything?
In that case why not use a resistor divider to power the dspic form the 5 Volt regulator?
In the case of connecting the DSpic to a 5 Volt pic pin, would small signal transistors suffice?
Cheers, Art.
I’m looking at doing my first project with a dspic 33FJ64GP chip that wants a 3.3 Volt supply.
I’m sure I’ll have the supply sorted out with a fixed regulator LM2576.
My question has to do with the chip being connected to 5 Volt peripherals such as character LCDs
or other pic chips that use 5 Volt supply.
Does this mean you also need a 5 Volt regulator on the same board, and do level conversion for everything?
In that case why not use a resistor divider to power the dspic form the 5 Volt regulator?
In the case of connecting the DSpic to a 5 Volt pic pin, would small signal transistors suffice?
Cheers, Art.