Buchanan, 21, also faces disorderly conduct, trespassing and resisting a police officer without violence.
The incident happened at a Fat Tuesday's at the Cocowalk shopping center, where, according to a police report, Buchanan caused some sort of disturbance in the men's restroom.
According to the report, Buchanan was approached by officers who smelled a strong scent of alcohol on him and ordered him to leave three times.
"No, f--- you, I ain't leaving!" Buchanan allegedly told the officers.
When the officers told Buchanan he was under arrest, he pulled away from them and "tensed his arms to evade arrest," according to the report.
When he was being placed on a chair, Buchanan allegedly charged at two officers and started to thrash his body and tried to headbutt one of the officers.
Buchanan allegedly spit on one of the officers and refused to obey commands until he was "redirected to the ground," the report states.
"I'm a UM football player and I don't give a f--- what you do, I'll get out of it, f--- the police," Buchanan allegedly told officers.
Hurricanes Coach Al Golden announced Monday night that Buchanan was suspended indefinitely.
"We are aware of Ramon's situation and we are disappointed," Golden said in a statement. "This is out of character for a young man who has been a positive influence in our program. He is contrite and apologetic for the situation and is currently taking the appropriate actions towards resolution."
Buchanan was released after his arrest and is scheduled for an April 18 hearing.
A native of Palm Bay, Buchanan had 54 tackles in 13 games with Miami last season.
The news comes just days after six UM players were suspended for the team's season opener against Maryland. Offensive lineman Seantrel Henderson, running back Storm Johnson, linebacker Kelvin Cain, defensive back Keion Payne, defensive lineman Dyron Dye and defensive back Devont'a Davis have all been suspended for reportedly breaking team rules.