公开(公告)号：US20230074929A1

公开(公告)日：2023-03-09

申请号：US17903753

申请日：2022-09-06

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Luigi SOLE ,  Rossella GAUDIANO ,  Marta CANTARINI ,  Nicola ERRICO ,  Antonio GIORDANO

IPC: G06F1/3206 ,  G06F1/3296

Abstract: A system basis chip is described. The system basis chip comprises a power supply circuit configured to receive an input voltage and generate a plurality of voltages, and a control circuit. Specifically, the power supply circuit is configured to selectively switch on a first and a second voltage of the voltages as a function of a control signal. The control circuit measures a resistance value of an external resistor connected to a terminal and selects one of a plurality of configurations as a function of the measured resistance value, wherein a first configuration indicates that said first voltage should be switched on before said second voltage and a second configuration indicates that said second voltage should be switched on before said first voltage. Accordingly, the control circuit may generate the control signal in order to switch on in sequence the first and the second voltage according to the selected configuration.