Stmicroelectronics S.r.l.

Stmicroelectronics (rousset) Sas

Stmicroelectronics International N.v.

Stmicroelectronics (grenoble 2) Sas

Pasquale Butta'

Daniele Mangano

Francesco Clerici

Antonino Mondello

Michele Alessandro Carrano

Roland Van Der Tuijn

Alessandro Inglese

Andrei Tudose

Pierre Marty

An electronic device includes at least two electronic components. A reset circuit includes: a parity control circuit; at least two first flip-flops, wherein each first flip-flop has an output coupled to at least one of the at least two electronic components; and at least two second flip-flops, wherein each second flip-flop has at least one output coupled to an input of the parity control circuit.

Reset circuit

A voltage regulator coupled between a first node and second node includes a first (full-power) regulator circuit and a second (low-power) regulator circuit. In a first mode: the first regulator circuit is activated (with the second regulator circuit inactive) when the voltage at the first node is a battery voltage, and the voltage regulator is kept de-activated when the voltage at the first node is a ground voltage. In a second mode: the first regulator circuitry in is active (with the second regulator circuitry inactive) when the voltage at the first node is a battery voltage, and the voltage regulator is inactive when the voltage at the first node is a ground voltage. In a third mode: the second regulator circuitry is active (with the first regulator circuitry inactive) irrespective of the voltage at the first node being at the battery voltage or the ground voltage.

Power supply circuit including first and second voltage regulators, corresponding device and method for controlling actuation of the voltage regulators in multiple operation modes

A voltage regulator is embedded in a circuit intermediate a first node (coupled to a battery) and a second node (supplying power to an external memory). The voltage regulator is activatable in a first mode of operation for startup during which an voltage is applied to the second node that increases towards a supply threshold. In response to the voltage at the second node reaching the supply threshold, the voltage regulator transitions to a second mode of operation where a programmable regulated voltage (higher than the supply threshold) is applied to the second node. In response to receipt of a low-power operation request, a first high-drive regulator circuitry is deactivated and a second low-power regulator circuitry is activated to provide a third mode of operation at low power.

Power supply circuit, corresponding device and method

A method of arbitration among a plurality of n units which seek access to a resource is regulated according to grants identified by means of an arbitration method, which compares between one another the priorities, generating, for each pair of the units comprising in general a unit x and a unit y with respective priorities Px and Py, a selection signal at a high level if the result of the operation Px>&equals;Py is true. The method generates, for the pairs of the units, respective cross-request signals and generates the grant for the ith unit as a logical product of all the cross-request signals req_i_z with z ranging from 1 to n, excluding the case of z&equals;i.

Variable-priority arbitration method and respective system

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Messina, Italy

Pasquale Butta'