Patent ID: 8035442
Filing Date: 2011-10-11
Classification: G11C

Abstract:
1. A semiconductor device comprising a pumping capacitor for inducing a high voltage coupled to said pumping capacitor, a switching circuit for transferring the high voltage induced by the pumping capacitor and a switching control circuit coupled to said switching circuit, wherein the switching control circuit controls the switching circuit and the switching control circuit includes: a first capacitor for inducing a switching control voltage to a first node in response to an oscillation signal; a first switching MOS transistor configured between the first node and a second node for transferring the switching control voltage applied to the first node to the second node; and a first turn-on controller for enabling the first switching MOS transistor to be turned on, and allowing a voltage below a predetermined voltage difference to be applied between the first node and a gate of the first switching MOS transistor, wherein the first turn-on controller generates a reference signal which is oscillated such that a high level of the reference signal is wider than that of the oscillation signal to thereby control the turn-on operation of the first switching MOS transistor.