Patent ID: 11889397
Assignee: STMICROELECTRONICS (ROUSSET) SAS
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method for operating a near field communication (NFC) controller in a circuit, the circuit comprising a first Universal Integrated Circuit Card (UICC) and a second UICC, the method comprising:
receiving, by the NFC controller, a low-power mode indicator from a main processor, the low-power mode indicator designating an operation of the first UICC in a low-power operating mode, the second UICC being powered OFF when the first UICC is in the low-power operating mode;
transmitting, by the NFC controller, the low-power mode indicator to the first UICC causing an auxiliary processor of the first UICC to retrieve a configuration indicator from an auxiliary memory of the first UICC, the first UICC using the configuration indicator to switch a single wire protocol (SWP) link for operating the first UICC in the low-power operating mode; and
communicating, by the NFC controller, in the low-power operating mode with the first UICC, wherein the first UICC is powered by the NFC controller in the low-power operating mode.