GeorgeStevens wrote:
what are the power requirements for the 6502 microprocessor
Welcome!
Possibly you are asking about voltage, not about power dissipation. In which case, all 6502s can run with a 5V nominal supply, and CMOS 6502s may well be specified to run also at lower voltages. The currently available 65C02 from WDC can run with a 3.3V supply - maybe even lower. As always, consult the datasheets. I'm pretty sure the datasheet will also give estimates of power consumption, perhaps even at different speeds and supply voltages.
The
Feb 2020 datasheet from WDC says:
Quote:
Wide operating voltage range, 1.8+/- 5%, 2.5+/- 5%, 3.0+/- 5%, 3.3+/- 10%, 5.0+/- 5% specified
Low Power consumption, 150uA@1MHz
Page 24 gives two important graphs: current vs voltage at 1MHz, and max frequency vs voltage.
If you're looking for an answer like 'will it need a heatsink' the answer is 'no'. If you're asking 'will it run from a coin cell battery' the answer is 'perhaps, if you're really careful about clock frequency.'
If you're asking if the original NMOS devices ran detectably warm at 2MHz, the answer is 'I think so, sometimes'.