Stmicroelectronics S.a.

St-ericsson Sa

Optis Circuit Technology, LLC

Bruno Delplanque

Nathalie Ballot

Pierre-Jean Pietri

Nicolas Florenchie

A reference clock signal of at least one module clock signal associated with each module is delivered. A measurement period is generated and a module whose consumption is to be determined is selected. The frequency of the at least one module clock signal associated with the selected module reduced during the measurement period. A measurement of a first consumption of the device is made in the measurement period. A measurement of a second consumption of the device is made outside the measurement period. The consumption of the selected module is determined from the first and measured first and second consumptions.

Method and system for determining the dynamic consumption of a module within an electronic device such as a system on chip

There is described a method for establishing an NFC connection between a subscriber identity module (SIM) and an NFC device (RDR). The subscriber identity module (SIM) is connected to a telecommunications system (CELL_P) through contacts (VCC, RST, CLK, D+, GND, SWP, IO, D&#x2212;) of the telecommunications system (CELL_P). The telecommunications system (CELL_P) comprises a chipset (CHP) and an NFC circuit (NFCC). The method comprises measuring the level of charge of a battery (BATT) powering the telecommunications system (CELL_P) with a battery gauge. Based on the measurement, the method selects the source for supplying power to the subscriber identity module (SIM) and configures the wiring of the subscriber identity module (SIM). The disclosure also relates, in particular, to a telecommunications system, to a computer program, and to a storage medium.

Battery management scheme for NFC

A change is managed in the attachment state between a first device and a second device which are connected via an interface. The first device comprises a high frequency clock. The first device is in a sleep state in which the high frequency clock is deactivated. A detection of a change in the attachment state of the second device is periodically triggered on said interface, on the basis of a low frequency clock. Upon detection of a change in the attachment state, the sleep mode is exited by activating the high frequency clock.

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Chaville, France

Bruno Delplanque