US 12,254,125 B2
Integrated circuit applicable to performing system protection through dynamic voltage change
Chang-Hsien Tai, HsinChu (TW); and Chia-Chu Cho, HsinChu (TW)
Assigned to Realtek Semiconductor Corp., HsinChu (TW)
Filed by Realtek Semiconductor Corp., HsinChu (TW)
Filed on Dec. 9, 2021, as Appl. No. 17/546,061.
Claims priority of application No. 110100703 (TW), filed on Jan. 8, 2021.
Prior Publication US 2022/0222385 A1, Jul. 14, 2022
Int. Cl. G06F 21/75 (2013.01); G01R 31/317 (2006.01); G06F 21/55 (2013.01); G06F 21/79 (2013.01); G11C 29/00 (2006.01); H01J 49/10 (2006.01)
CPC G06F 21/755 (2017.08) [G01R 31/31719 (2013.01); G06F 21/554 (2013.01); G06F 21/79 (2013.01); G11C 29/00 (2013.01); H01J 49/107 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An integrated circuit, applicable to performing a system protection through a dynamic voltage change, the integrated circuit comprising:
a monitoring circuit, arranged to monitor at least one security checking result of a security engine to determine whether at least one security event occurs;
at least one power voltage generation circuit, arranged to generate at least one internal power voltage within the integrated circuit according to at least one input voltage received from outside of the integrated circuit, to provide the at least one internal power voltage to at least one internal component of the integrated circuit during a normal operating state;
a voltage adjustment circuit, coupled to the monitoring circuit and the at least one power voltage generation circuit, wherein in response to occurrence of the at least one security event, the voltage adjustment circuit is arranged to control the at least one power voltage generation circuit to dynamically adjust the at least one internal power voltage, to control the at least one internal power voltage to randomly exceed a predetermined voltage range thereof to cause the integrated circuit to enter an unstable operating state, thereby disturbing the occurrence of the at least one security event to perform the system protection, the voltage adjustment circuit comprising:
a timer for enabling and disabling the dynamic adjustment of the at least one internal power voltage.