Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
just power up it with 3,3V !
Maximum Fosc is lower than with 5V.
Chek BOR value if you use it.
check ADC convertions +Vref =3,3V default value
Maximum internal voltage reference if used
Use of Max3223 instead of Max232 for Uart
all other parameters...depend of your application