An attorney entered a plea on Brown's behalf to the misdemeanor counts.
The 43-year-old was arrested Oct. 24 in Tarzana after authorities say he refused a sobriety test.
Brown, who is the ex-husband of the late Whitney Houston, faces a third charge in connection with the early morning DUI stop. Authorities say Brown did not have an ignition locking device on his car as required from a separate drunken driving case in the San Fernando Valley earlier this year.
In the March DUI case, the judge sentenced him to probation, a fine, and an alcohol treatment program which Brown entered in August.
This is Brown's third DUI charge. His first DUI arrest was in 1996 when he led police on a high-speed chase.
A pretrial hearing is scheduled on Dec. 13.