Patent ID: 6256236
Filing Date: 2001-07-03
Classification: G11C

Abstract:
A semiconductor device comprising:an internal circuit operating according to a signal supplied from the outside of said semiconductor device and generating an internal signal having a first logic value and a second logic value; andan input/output circuit for transmitting a signal between said internal circuit and the outside of said semiconductor device,said input/output circuit including:a signal terminal receiving an input signal and supplying the input signal to an input node, said input signal capable of changing between a first potential level corresponding to said first logic value and a second potential level corresponding to said second logic value;a first input circuit determining a potential level of said input signal supplied to said input node based on a predetermined threshold level and supplying to said internal circuit a signal having either one of a potential level corresponding to said first logic value and a potential level corresponding to said second logic value;a first potential control circuit increasing the potential level of said input node by a first voltage in response to a transition of said internal signal from said first logic level to said second logic level, said first voltage being smaller than a potential difference between said first potential level and said threshold level; anda second potential control circuit decreasing the potential level of said input node by a second voltage in response to a transition of said internal signal from said second logic level to said first logic level, said second voltage being smaller than a potential difference between said second potential level and said threshold level.