In electronic circuits, there are different symbols for voltage: VCC, VDD, VSS, VEE, and VPP? What is the difference between them?
In: 4
Generally if you get all 5 its because someone had too many power pins
In general, Vss is tied to ground with Vcc and/or Vdd being the positive voltage (5V or 12V or similar)
Vee is significantly less common but is generally equivalent to Vss when used with BJT circuits, its tied to the Emitter of the BJTs rather than Vss being at the Source of the FETs, both are generally the lowest voltage being applied to that portion of the chip
Certain chips will take both a Vcc and a Vdd, maybe it has two separate power circuits inside itself running at different voltages and you feed Vcc +3.3V and Vdd +5V for some logic level operations.
In general, consult your data sheet for what each random acronym they’re using means to them because some companies use slightly different terms and definitions.
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