Lennon has been accused of a "failure to behave in a responsible manner as an occupant of the technical area by repeated use of offensive, insulting and abusive language" during the 1-1 draw with Saints on Sunday.
The Hoops boss has yet to respond to SFA compliance officer Vincent Lunny's notice of complaint.
But Lennon - who still has an active three-match suspended ban in place - has made it clear he will fight the charge.
He said: "I can't really talk about it at the minute but needless to say I will be defending my case as vigorously as possible.
"I don't want to say anything to prejudice the case against me.
"I'll speak to the club officials and lawyers and we will come up with a defence to defend myself as best I can.
"Vincent has a job to do and he feels he has to bring this case forward and we will deal with it when it comes around.
"We will make a case and hopefully we will get what we deem to be the right result."
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