Patent ID: 9509311
Filing Date: 2016-11-29
CPC Classification: H03K

Claim Text:
1. A semiconductor device comprising: a driving unit suitable for driving a plurality of signal lines, which are directly coupled to a plurality of bump pads, to a preset voltage level in a level determination period, and adjusting the preset voltage level in a predetermined order when the level determination period is repeated; a signal input circuit suitable for receiving voltage levels that are inputted through the signal lines and determining logic values for the inputted voltage levels of the signal lines; and an operation unit suitable for receiving the voltage levels of the signal lines from the signal input circuit in a parallel manner in the level determination period, latching the logic values of the voltage levels, and serially outputting the logic values through a probe pad, wherein the driving unit comprises: a code generation section suitable for adjusting a value of a driving control code in the predetermined order when the level determination period is repeated; and a driving operation section suitable for driving each of the signal lines with driving strength corresponding to the value of the driving control code in the level determination period, wherein, in a normal operation period, a signal outputted from an internal circuit is driven to the signal lines through the driving unit and is outputted to an exterior through the bump pads, and a signal applied from an exterior through the bump pads is transferred to the signal lines, a logic value of the signal is determined by the signal input circuit, and the signal is inputted to the internal circuit.