Kim Awarded South Korean Patent for Autonomous Impedance Calibration on Semiconductor Devices
ECE Professor Yong-Bin Kim was awarded a South Korean Patent for creating an “Impedance calibration device for semiconductor device.”
Abstract Source: KIPRIS
The present invention relates to an impedance calibration apparatus of a semiconductor device, which is able to adaptively and actively control the characteristics of an output driver in accordance with a change in process and temperature. According to an embodiment, the impedance calibration apparatus of the semiconductor device may comprise: a process sensor which detects a process condition for the semiconductor device to output a process signal; a temperature monitoring sensor which detects the temperature of the semiconductor device to output a temperature signal; a converter which converts the process signal and the temperature signal into a digital signal; a code generation unit which generates and outputs a driving code to control the voltage level of an output node in accordance with the output signal of the converter and a data signal to be transmitted; and an output driver which pulls up or pulls down the voltage of the output node in accordance with the driving code.