LOW VOLTAGE ATTACK DETECTOR, SECURE ELEMENT AND ELECTRONIC SYSTEM INCLUDING THE SAME

A low voltage attack detector includes: a low voltage detector configured to output a low voltage detection flag signal having a high level when a first power supply voltage reaches a first voltage level using a bandgap reference (BGR) circuit including a PMOS transistor and a first bipolar junction...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Heo, Donghun, Kim, Kwangho, Yang, Junhyeok
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY CALCULATING COMPUTING CONTROLLING COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS PULSE TECHNIQUE REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Beschreibung
Zusammenfassung:	A low voltage attack detector includes: a low voltage detector configured to output a low voltage detection flag signal having a high level when a first power supply voltage reaches a first voltage level using a bandgap reference (BGR) circuit including a PMOS transistor and a first bipolar junction transistor (BJT) connected in series between the first power supply voltage and a second power supply voltage; a BGR operation region detector configured to output a malfunction detection flag signal having a high level when the first power supply voltage reaches a second voltage level lower than the first voltage level; and a logic gate configured to output a final low voltage detection flag signal having a high level when at least one of the low voltage detection flag signal and the malfunction detection flag signal has a high level.