Hi,I have Atmega328p and I need serial to be 2.8v because it will be connected to SIM900.It will be powered from 5v so I was thinking voltage devider for this,I calculated 10000R and 12000R to give me output of 2.727V,will that work? or will it mess with my serial? or do I need higher values? 100k and 120k?
Yes,but I can't get it right now,will the voltage devider work?
What baud rates? High value resistors will limit the bandwidth.
9600 baud
I have mosfets,N-channel ones
Hi,,
These Level Converter work for 5V to 3.3 volts. Will probably work down to 2.8
The schematic for it (or at lease one very similar) is attached. You can use your Mosfets IF their Vgs is low enough to allow the Mosfet to be On with the 2.8 V you will supply from one end.
Good luck
Thanks for helping.I have 500 of this ones: http://www.rohm.com/web/global/datasheet/2SK3018 what should I be looking in datasheet to check what's minimum voltage for it?
I got it to work,thanks