Nxp Usa, Inc.

Freescale Semiconductor,inc.

David McMenamin

Mark Maiolani

James Andrew Collier Scobie

Alistair James Gorman

Gordon James Campbell

Carl Culshaw

Graham Edmiston

Alan Devine

Andrew Roberston

Carl Culchaw

An electronic device, typically a microcontroller, which is divided into a multiplicity of power domains comprising one or more intelligent peripherals, is provided with an on-board power management module for switching power to one or more domains for pre-determined time periods and in a predetermined sequence. The values of the predetermined time periods and sequence may be pre-programmed by the design engineer or user of the device. In one example, power is switched to domains in a round robin fashion. An optional interrupt capability permits selective application of power to a dormant intelligent peripheral requesting it at the expense of others and based on a priority scheme. Consumption of current supplied to power domains may be monitored by a power watchdog or alternatively via a dedicated power monitor associated with each intelligent peripheral. The invention helps to reduce device power consumption without any associated reduction in processing performance.

Electronic device and apparatus and method for power management of an electronic device

Apparatus suitable for detecting a fault in a processor comprises a monitor which receives input and output signals from the processor and generates a hash index key which is used to access entries in a hash table. The entries may include actions such as setting a timer so that the response of an output to a change of state of an input may be confirmed as valid within a specified time interval.

Fault detection apparatus and method

An interrupt controller for controlling processing of interrupt requests by a plurality of processing units. The processing units have at least two modes: an active mode and an inactive mode. The interrupt controller comprises a controller input, an interrupt router coupled to the controller input and a monitoring unit. The monitoring unit outputs a routing change signal to the interrupt router if it determines that a selected processing unit, to which, in response to a received interrupt request, an execution of an interrupt service routine was initially routed, is in inactive mode while a preselected one is in the active mode. The interrupt router reroutes the execution of the interrupt service routine to the preselected processing unit.

Interrupt controller and a method of controlling processing of interrupt requests by a plurality of processing units

A system performance control component, and method therefor, for configuring at least one system performance parameter within a signal processing system. The system performance control component is arranged to receive an indication of an address of a memory access performed by at least one signal processing component, compare the received indication of an address of a memory access to at least one address value, and configure at least one system performance parameter based at least partly on the comparison of the received indication of an address of a memory access to at least one address value.

System performance control component and method therefor

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Glasgow, United Kingdom

David McMenamin