What does the ~ (tilde) mean for pins like "~RESET"?
The ~ in pins names like ~RST means not.
- A pin named without
~, for exampleRSTorRESET, will perform its function (e.g. reset the device) when it is connected to VCC - A pin named with
~, for example~RSTor~RESET, will perform its function (e.g. reset the device) when it is connected to GND
~RESET has exactly the same meaning as overlining the name - for example [latex]\overline{\text{RESET}}[/latex]. Some manufacturers also use use n instead of ~RESET or [latex]\overline{\text{RESET}}[/latex]