公开(公告)号：US20240210984A1

公开(公告)日：2024-06-27

申请号：US18394621

申请日：2023-12-22

Applicant: STMicroelectronics (Rousset) SAS

Inventor： Ayoub Hagrou ,  Cedric Thomas

IPC: G05F3/26 ,  G05F1/46

CPC classification number: G05F3/267 ,  G05F1/468

Abstract: A microcontroller includes a reference voltage generator circuit having a first transistor coupled as a diode, a second transistor coupled as a diode, a first variable resistor, an operational amplifier having a first input connected to the first transistor via the first variable resistor, and a second input connected to the second transistor, and second variable resistor having a first terminal connected to the second transistor and to the second input of the operational amplifier. A current mirror is controlled by an output of the operational amplifier and configured to replicate the current proportional to an absolute temperature of the second variable resistor. A current copier branch is connected to the second transistor via a switch, the current copier branch being configured to replicate the current proportional to the absolute temperature of the second variable resistor and inject the current through the second transistor.