A system embodiment comprises an implantable device including controller circuitry, memory, a transceiver, and a generator configured to generate electrical stimulation to modulate the neural activity. The controller circuitry and the transceiver configured to cooperate to receive, from another device, data corresponding to a user-programmable stimulation pattern and store the data in the memory. The user-programmable pattern includes a programmable pattern of bursts with multiple burst durations and multiple burst interval sequences, and the bursts include pulses with a user-programmable wave morphology. The controller circuitry is operably connected to the memory and the generator to use the data stored in the memory to control generation of the electrical stimulation to provide the user-programmable stimulation pattern that includes the pulses with the user-programmable wave morphology and that includes the multiple burst durations and the multiple burst interval sequences.