Circuit For Detecting A Volatage Glitch, An Integrated Circuit Device Having The Same, And An Apparatus And Method For Securing An Integrated Circuit Device From A Voltage Glitch Attack

摘要

A voltage-glitch detection circuit includes a voltage comparator having two input terminals with different capacitance resistance charge/discharge time. Voltage dividers are coupled to the two input terminals of the voltage comparator respectively, and commonly receive a supply voltage. One of the voltage dividers is supplied to the voltage comparator as a reference voltage of the voltage comparator, and the other is supplied as a glitch detection voltage to the voltage comparator.