I'm planning on connecting a MCP2003 to a ESP8266. The voltage levels of the uart (and any io) on the ESP8266 is 3.3v. As far as I understand the datasheet, the MCP2003 needs to be powered by 6-30v, and it's io (out) levels on the uart side match the power voltage. So:
- Is it common that the 6v is the absolute minimum for these kind of chips, or do I have a chance that it'll run at 3.3v?
- Am I missing or misunderstanding something in the datasheet that could help me do what I want? (For example, is there another way to get a lower output signal? Or is there so little power behind the signals that the ESP would be fine fine with them?)
- If neither of the previous questions give me a way to do what I want, what would be the easiest or least component alternative?
Some background information:
- What I want to do is to control a AXA Remote 2.0 device with an ESP over wifi. This device uses a LIN bus, and the MCP2003 converts from UART to LIN.
- The voltage on the LIN bus is higher as I understand it, but this shouldn't be a problem, as the MCP2003 can handle that (I think). I haven't quite figured out how the LIN 'output' from the MCP2003 works, can't find a easy description of LIN, but I'm guessing it the bus get's pulled down similar to onewire? In which case there's no output voltage to the LIN bus to worry about.
- The AXA Remote 2.0 device sadly isn't very well documented, basically this is it: http://files.domoticaforum.eu/uploads/Axa/AXA%20Remote%202%20domotica%20English%202012nov_V2.pdf It shows how to solder a MCP2003 to a 5v TTL USB serial dongle :)
Any helps or insights would be greatly appreciated! :)