FT232R FTDI chip related question

[aliyesami]

I am reading the datasheet for this chip and it says

+3.3V (using external oscillator) to +5.25V (internal oscillator) Single Supply Operation.

what does it mean ? my system is 3.3v and i want to use this as supply voltage . in datasheet its not showing what this internal
or external osc is and how to implement it.

thanks

 

[FvM]

There are detailed explanations in the datasheet, particularly in paragraph 7.6 "Using the External Oscillator".

FT232R will be typically used in the bus-powered configuration (Vcc = 5V VBUS) with the default internal oscillator. The IO voltage can be nevertheless 3.3V.

 

[aliyesami]

thanks !
after talking to FTDI folks they recommended to use FT230X as that chip can be used directly with 3.3 v