Micro controller unit including an error indicator module

Patent metadata

Field	Value
Publication number	US-9329919-B2
Application number	US-200813054344-A
Country	US
Kind code	B2
Filing date	Jul 16, 2008
Priority date	Jul 16, 2008
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

A micro controller unit including an error indicator hardware module, the error indicator module being arranged to respond to event signals representative of internal and external fault and error events perturbing the micro controller unit function by registering in non-volatile memory a record of the nature of each of the events, wherein the record of the events is inaccessible to alteration.

First claim

The invention claimed is:

1. A micro controller unit comprising:
an error indicator hardware module, the error indicator module being arranged to:
respond to event signals representative of internal and external fault and error events perturbing the micro controller unit function by registering in non-volatile memory a record of the nature of each of said events; and
respond to signals representative of recovery from said events by registering in the non-volatile memory a record of said recovery from said events,
wherein the record of said events is inaccessible to alteration.

Assignees

• Pickel Norbert
• Bahr Axel
• Beattie Derek
• Birnie Andrew
• Culshaw Carl
• Freescale Semiconductor Inc

Inventors

• Pickel Norbert
• Bahr Axel
• Beattie Derek
• Birnie Andrew
• Culshaw Carl

Classifications

• G07C5/085

  using electronic data carriers · CPC title

• G06F11/0772 Primary

  Means for error signaling, e.g. using interrupts, exception flags, dedicated error registers · CPC title

• G06F11/0721

  within a central processing unit [CPU] · CPC title

• G06F11/0739 Primary

  in a data processing system embedded in automotive or aircraft systems · CPC title

• B60R16/023

  for transmission of signals between vehicle parts or subsystems · CPC title