Patent ID: 11899789
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A low voltage attack detector comprising:
a low voltage detector including a bandgap reference (BGR) circuit and 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;
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,
wherein the BGR circuit includes a PMOS transistor and a first bipolar junction transistor (BJT) directly connected in series between the first power supply voltage and a second power supply voltage.