Stmicroelectronics S.r.l.

Francesco Pirozzi

Maurizio Di Meglio

Nicola Cesario

Giovanni Moselli

Paolo Amato

Ferdinando Taglialatela-Scafati

Francesco Carpentieri

Santi Carlo Adamo

Stefano Baratto

Agatino Antonino Alessandro

Liliana Arcidiacono

Carmelo Alberto Santagati

Sergio Fabiano

Santicarlo Adamo

Ferdinando Taglialatela

A processing system comprising a first sub-circuit configured to be powered by a first supply voltage and a second sub-circuit configured to be powered by a second supply voltage. The first sub-circuit comprises a general-purpose input/output register. The second sub-circuit comprises: a storage circuit configured to selectively store configuration data from the general-purpose input/output register; an input/output interface, at least one peripheral and a selection circuits to exchange signals of the peripherals, and the stored configuration data with the input/output interface. A power management circuit is configured to manage a normal operating mode, and a low-power mode during which the configuration data are maintained stored and the first sub-circuit is switched off. The power management circuit activates the low-power mode in response to receiving a commands, and resumes the normal operating mode in response to a wake-up events.

Processing system, related integrated circuit and method

A processing system comprising a first sub-circuit configured to be powered by a first supply voltage and a second sub-circuit configured to be powered by a second supply voltage. The first sub-circuit comprises a general-purpose input/out register. The second sub-circuit comprises: a storage circuit configured to selectively store configuration data from the general-purpose input/out register; an input/output interface, at least one peripheral and a selection circuits to exchange signals of the peripherals, and the stored configuration data with the input/output interface. A power management circuit is configured to manage a normal operating mode, and a low-power mode during which the configuration data are maintained stored and the first sub-circuit is switched off. The power management circuit activates the low-power mode in response to receiving a command, and resumes the normal operating mode in response to a wake-up event.

A digital filter with a pipeline structure includes processing structures timed by respective clock signals. Each processing structure in turn is formed by a number of processing modules for processing input samples. A phase generator aligns the processing modules with the input samples so that each input sample is processed by a respective one of the processing modules. An up-sampling buffer and a down-sampling buffer are used when the processing structures operate at different clock frequencies (thus implementing different clock domains) so as to convert signal samples between the clock domains for processing in the processing structures.

Digital filter with a pipeline structure operating in multiple clock domains, and a corresponding device

A battery charger includes an input supply terminal configured to receive a supply signal and a battery terminal configured to be connected to a battery. A supply switching circuit is arranged between the battery terminal and the input supply terminal. A control device generates a control signal to control operation of the supply switching circuit. A fuel gauge device provide a digital estimation of a voltage signal across the battery. A correction device modifies the control signal in response to the digital estimation of the voltage signal across the battery if that digital estimation is outside of a value range between two thresholds.

Battery charger including correction device to correct control signals for supply switching circuit

Digital filter with a pipeline structure, and a corresponding device

A DC-DC converter includes an interface to receive data having voltage values. A first circuit carries out a voltage transition from a previously received voltage value to a received voltage value (VSEL). A second circuit activates or inactivates the first circuit in response to an activation signal or a stop signal provided by the interface. A third circuit configures the second circuit so that, when new data including a new voltage value is received during a voltage transition, the second circuit interprets the stop signal as an activation signal for the first circuit to carry out a new voltage transition. The setting circuit sets at least one parameter needed by the first circuit to carry out the new voltage transition in response to the new data and before the end of the new voltage transition.

DC-DC converter and operating method thereof

A method of sensing the air/fuel ratio in a combustion chamber of an internal combustion engine that may be easily implemented by a respective low-cost device includes a pressure sensor and a learning machine that generates a sensing signal representing the air/fuel ratio by processing the waveform of the pressure in at least one cylinder of the engine. In practice, the learning machine extracts characteristic parameters of the waveform of the pressure and as a function of a certain number of them generates the sensing signal.

Method and associated device for sensing the air/fuel ratio of an internal combustion engine

A method for determining duty-cycles of respective pulse width modulated (PWM), space vector modulated (SVM) control signals of an inverter, may include storing values of the duty-cycles as a function of a position of the multi-phase electric load in a look-up table. The method also may include determining a phasor angle representing applied sinusoidal voltages. The method also may include determining the duty-cycles as a function of the angle, and storing, in the look-up table, values of two pre-established waveforms relative to at least one duty-cycle as a function of the angle in at least two 60&#xb0; degree angular sectors, by at least, identifying which of six 60&#xb0; angular sectors the angle belongs, calculating a difference between the angle and an angular sector lower bound, and generating values as a function of the identified angular sector of the difference and the two pre-established waveforms stored in the look-up table.

Method and device for determining the duty-cycles of PWM control signals of an inverter

A method estimates variations of position of the rotor of a motor having a plurality of uniformly spaced sensors that generate a position pulse at every rotation by a pre-established angle of the rotor. The method may include generating a first clock signal at a first frequency, generating a second clock signal at a second frequency multiple than the first frequency by a first factor, in each interval between two consecutive position pulses, counting the number of pulses of the first clock signal comprised in the interval, counting the number of pulses of the second clock signal comprised in the interval. The method may also include that each time the number of counted pulses of the second clock reaches the number of pulses of the first clock counted in an interval that precedes the currently considered interval, signaling that the position of the rotor has varied of an angle equal to the ratio between the pre-established angle and the factor.

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Naples, Italy

Francesco Pirozzi