US Patent 7447085 Multilevel driver

The present disclosure includes various method, device, and system embodiments for multilevel driving of rowlines and/or wordlines. One such method embodiment includes supplying a first power voltage (V1) and a second power voltage (V2) that is greater than V1, to the driver circuit. The method includes supplying a first boost voltage (V3), V3 being greater than V2, and a reference voltage (Vref) that is less than V1, to the driver circuit. The method includes coupling a level shifter to the driver circuit, the level shifter including a number of input signals configured to control a drive output of the driver circuit in order to switch the drive output successively from a voltage at or below Vref to at least one of V1, V2, and Vref prior to switching the driving output to V3.