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AndrewP
PostPosted: Thu Jan 11, 2024 2:50 pm 
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Joined: Mon Aug 30, 2021 11:52 am
Posts: 287
Location: South Africa
I'm pretty certain the answer is no. Don't run a W65Cxx @3.3V VDD with 5V signals because looking at the datasheets VIH is VDD+0.3V. For 3.3V that's a max VIH of 3.6V

Still if anyone can tell me that I'm wrong and that it is safe to run 3.3V VDD with 5V inputs that would make my life a lot simpler.

Cheers,
Andrew

Ps: This topic sort of discusses around it
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