SPELTER
Junior Member level 2
I am building a mmc reader using the code provided at
h**p://elm-chan.org/fsw/ff/00index_e.html
i have used the code from ffsample file.
the problem i am facing is that my whole circuit will be working on 3.3 v(both atmega 128 and the mmc card) but the max232 datsheet specifies that it can work on 4.5 to 5.5 v .so should i give the max232 5v supply sperately or is there any other way out.
i am attaching the schematic file for reference
h**p://elm-chan.org/fsw/ff/00index_e.html
i have used the code from ffsample file.
the problem i am facing is that my whole circuit will be working on 3.3 v(both atmega 128 and the mmc card) but the max232 datsheet specifies that it can work on 4.5 to 5.5 v .so should i give the max232 5v supply sperately or is there any other way out.
i am attaching the schematic file for reference