US 12,474,761 B2
Micro-controller circuit and management method thereof
Chi-Ray Huang, Kaohsiung (TW)
Assigned to NUVOTON TECHNOLOGY CORPORATION, Hsinchu Science Park (TW)
Filed by Nuvoton Technology Corporation, Hsinchu Science Park (TW)
Filed on Jan. 9, 2024, as Appl. No. 18/407,693.
Claims priority of application No. 112102227 (TW), filed on Jan. 18, 2023.
Prior Publication US 2024/0241567 A1, Jul. 18, 2024
Int. Cl. G06F 1/3287 (2019.01)
CPC G06F 1/3287 (2013.01) 18 Claims
OG exemplary drawing
 
1. A micro-controller circuit comprising:
a central processing unit (CPU) in a first power domain;
a plurality of function circuits in a second power domain, wherein in response to the first power domain being powered-off, the function circuits operate normally to generate a first event trigger signal;
a management circuit reading a look-up table to provide at least one management signal in response to the first power domain being powered-off and the first event trigger signal being enabled; and
a driving circuit adjusting at least one driving signal according to the management signal and providing the driving signal to at least one of the function circuits,
wherein the management circuit comprises:
a shadow-power management circuit in the second power domain, reading the look-up table to provide a control signal and a first management signal according to the first event trigger signal; and
a main-power management circuit generating a second management signal according to the control signal, and
wherein the driving circuit adjusts a first driving signal according to the first management signal, adjusts a second driving signal according to the second management signal, and provides the first and second driving signals to at least one of the function circuits.