Abstract: An electronic device includes a power supply, such as a battery, configured to supply a power supply voltage. The device further includes a controllable voltage converter circuit configured to generate a control voltage based on the power supply voltage. A near-field communication device is included that has at least one antenna configured to emit an electromagnetic field having a power that is controllable by the control voltage. The electronic device further includes a temperature measuring device configured to measure a temperature. The controllable voltage converter circuit is configured to modify a value of the control voltage based on the measured temperature.

Abstract: Data exchanges between an ultra-wide band communication module and a secure element are controlled such that the data exchanges pass through a near-field communication router. The near-field communication router controls routing of the data exchanges so that the data exchanges do not pass through a host circuit that is also coupled to the near-field communication router.

Abstract: A wireless communication device includes a battery, and a platform powered by the battery, with the platform including a processor. The device also includes a voltage regulator powered by the battery, an ultra-wideband communication unit powered by the voltage regulator via the platform when the platform is powered up, and a near-field communication unit powered directly by the battery, and being configured to order the voltage regulator to power the ultra-wideband communication unit when the platform is powered down.

Abstract: In an embodiment, an electronic device includes a first near field communication module, at least one second communication module, at least one portion of a volatile memory, at least one register, and at least one first circuit configured to activate the near field communication module, wherein the at least one second communication module is configured to power the at least one portion of the volatile memory, the at least one register and the at least one first circuit with a first supply voltage when the electronic device is in an on state and when the first near field communication module is in a standby mode.

Abstract: In accordance with an embodiment, a circuit for managing a power supply of an electronic module includes: a first state machine configured to receive a first command for disabling the module, and to verify that the first command remains the same for a first minimum time period; and a second state machine configured to cut off a power supply of a first portion of the module when the second state machine receives a second command from the first state machine indicating that the first command has remained the same for the first minimum time period. The first portion of the module is configured to is configured to be powered from a battery via a first power supply voltage.

Abstract: A device includes a first circuit that includes a near-field emission circuit, a second circuit, and a hardware connection linking the first circuit to the second circuit. The hardware connection is dedicated to a priority management between the first circuit and the second circuit. In addition, priority management information can be communicated between a near-field emission circuit and a second circuit. The communicating occurs between a dedicated hardware connection connecting the near-field emission circuit to the second circuit.

Abstract: An embodiment provides a circuit of cyclic activation of an electronic function including a hysteresis comparator controlling the charge of a capacitive element powering the function.

Abstract: A circuit for a communication device and a method for switching a communication device are disclosed. In an embodiment, a method includes activating at least one first antenna and at least one second antenna of a near-field communication (NFC) device for switching the NFC device between first field detection phases and second card detection phases.

Abstract: An electronic device includes a near-field communication module and a powering circuit for delivering a power supply voltage to the near-field communication module. When the near-field communication module is in a low power mode, the powering circuit is configured for an operational mode where it is periodically started to provide the power supply voltage.

Abstract: An embodiment of the present description concerns a method wherein a time of beginning of a periodic step of activation of a near-field communication circuit of a first device, charged in near field by a second device, is adjusted according to a frequency of an electromagnetic field emitted by the second device.

Abstract: A method of configuration of a mobile terminal including a near-field communication device is provided. The method includes determining the geographic position of the mobile terminal. The method further includes selecting, from a configuration table stored in an internal memory of the mobile terminal, a set of one or a plurality of configuration parameters of the near-field communication device according to the geographic position, and applying a selected set of parameters to the near-field communication device.

Abstract: A circuit monitors a first voltage delivered by a battery. The monitored first voltage is compared with a second voltage. When the comparator detects that the first voltage is smaller than the second voltage, a counter starts counting. If the value of the counter during said counting exceeds a limiting value, an interruption signal is generated to control an operating mode of an electronic device power by said battery.

Abstract: A method includes detecting, by a first near-field communication device, the presence of a second near-field communication device. In a case where the second device is intended to be charged in near-field by the first device, the method further includes adjusting, by a control device, an impedance of an impedance matching circuit forming part of a near-field communication circuit of the first device.

Abstract: A near-field communication circuit of a first NFC device alternates, in low power mode, between: first phases of emission of field bursts and second phases spanning an entire duration separating two successive first phases. Each second phase includes a field detector enabling phase. In one implementation, the field detector enabling phase extends all along a duration of the second phase. In an alternate implementation, the field detector enabling phase is interrupted by field detector disabling phases. Each field detector disabling phase has a duration shorter than a minimum duration of each first phase.

Abstract: Devices and methods for configuration of a mobile terminal including a near-field communication device and a radio communication device separate from the near-field communication device are provided. One such method includes determining, by the radio communication device, an identifier of a wireless local network within a range of the mobile terminal. The method further includes selecting, from a configuration table, at least one configuration parameter of a plurality of sets of configuration parameters of the near-field communication device according to the identifier, and applying the at least one configuration parameter to the near-field communication device.

Abstract: An embodiment of the present description concerns a method wherein a duration of a periodic step of activation of a near-field communication circuit of a first device is calibrated according to a time interval between an activation of the circuit and a reception, by the first device, of a message transmitted by a second device.

Abstract: A device includes a first circuit that includes a near-field emission circuit, a second circuit, and a hardware connection linking the first circuit to the second circuit. The hardware connection is dedicated to a priority management between the first circuit and the second circuit. In addition, priority management information can be communicated between a near-field emission circuit and a second circuit. The communicating occurs between a dedicated hardware connection connecting the near-field emission circuit to the second circuit.

Abstract: In an embodiment a method for dynamic power control of a power level transmitted by an antenna of a contactless reader is disclosed. The method may include supplying a power to the antenna and performing at least one power adjusting cycle for adjusting a power level during a contactless transaction with a transponder, each power adjusting cycle including modifying the power supplied to the antenna to a predetermined level of power, performing a first measuring of a loading effect on the antenna at the predetermined level of power and adjusting the power level according to the measured loading effect.

Abstract: An embodiment of the present disclosure relates to a circuit of cyclic activation of an electronic function comprising a hysteresis comparator controlling the charge of a capacitive element powering the function.

Abstract: A device includes a first circuit that includes a near-field emission circuit, a second circuit, and a hardware connection linking the first circuit to the second circuit. The hardware connection is dedicated to a priority management between the first circuit and the second circuit. In addition, priority management information can be communicated between a near-field emission circuit and a second circuit. The communicating occurs between a dedicated hardware connection connecting the near-field emission circuit to the second circuit.