What's the difference between Vcc and Vdd supply?

[Help]

Hi,

Anyone can tell me what the difference between Vcc and Vdd?

Thank You...

 

[IanP]

how to connect vcc & vdd

Vdd is unregulated voltage of ≥8V value, Vcc is regulated +5V for logic circuits ..
Regards,
IanP

 

[kapils1982]

vdd supply

I think its only a convention.

 

[mohammad mokhtar]

Re: Vcc n Vdd Supply

Hi
When we connect a supply to a bipolar junction transistor or Ic we call the supply Vcc,and when we connect a supply to a mosfet or fet or mosfet Ic we call the supply Vdd.
regards

 

[sp]

Re: Vcc n Vdd Supply

Hi
When we connect a supply to a bipolar junction transistor or Ic we call the supply Vcc,and when we connect a supply to a mosfet or fet or mosfet Ic we call the supply Vdd.
regards

i am just gonna say the same thing... Ian, is wad mohammad mokhtar correct??

anyway,,,"Help" as L7805 is voltage regulator, the input to it should b unregulated voltage source.... and the output is regulated 5V(L7805 -> the '5' means 5V)

regards,
sp

 

[IanP]

Re: Vcc n Vdd Supply

About convention on Vxx:
**broken link removed**
Regards,
IanP

 

[checkmate]

Re: Vcc n Vdd Supply

What mokhtar said is correct. But in the context of Help's question, the designer of the schematic obviously failed to follow convention and simply implied them as unregulated and reegulated supply voltage.