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Additions:

- **Do not use company names in tags.** Questions should be about specific products, not about companies. Furthermore, silicon companies merge/split and purchase each other all the time, so company tags will quickly become outdated.


  For example, questions about STM32 should be tagged `STM32` not "ST". Questions about AVR should be tagged `AVR`/`ATMega` not "Atmel"/"Microchip". Questions about ARM cores should be tagged according to the specific core `Cortex-M0` etc, not "ARM" (way too broad).


- **Do not use exact part numbers in tags**. Use the family name or component type that the part belongs under. 

  A tag such as "STM32F302CC" is too specific - by all means do include the exact part number in the question (with a link to the datasheet) and schematics, but do not drag in specific sub-families and part numbers into the tag structure. In this case even "STM32F" or "STM32F3" is too specific and doesn't really add much meaningful information. There are thousands of microcontrollers out there and if we are to create a tag for each and every family, it will become messy.

  Instead use the tag `STM32` - the family name. Or you could use `microcontroller` to just indicate the type of IC. Similarly, use `RS232-transceiver`, not "MAX232".

  A potentially valid exception to this rule is standard IC where multiple vendors exist, like 74HC parts.