Abstract: A microcontroller system includes a processing unit, a first peripheral having a first set of registers, and an assurance module. The first peripheral is configured to receive a first reset signal that resets the first set of registers to a first actual reset value, which is expected to be a first expected value. The assurance module is configured to calculate a first signature value, which is based on the first actual reset value, in response to the first reset signal. The processing unit is configured to perform a first comparison between the calculated first signature value and a pre-determined first signature value to determine whether the microcontroller system is in a trusted safety state. The first comparison is performed in response to the first reset signal, and the pre-determined first signature value is based on the first expected value.

Abstract: A microcontroller system includes a processing unit, a first peripheral having a first set of registers, and an assurance module. The first peripheral is configured to receive a first reset signal that resets the first set of registers to a first actual reset value, which is expected to be a first expected value. The assurance module is configured to calculate a first signature value, which is based on the first actual reset value, in response to the first reset signal. The processing unit is configured to perform a first comparison between the calculated first signature value and a pre-determined first signature value to determine whether the microcontroller system is in a trusted safety state. The first comparison is performed in response to the first reset signal, and the pre-determined first signature value is based on the first expected value.

Abstract: A system and method for signature-based redundancy comparison provides for receiving, by a master part, an input signal and generating, by the master part, a binary output signal, generating a delayed input signal based on the input signal, generating a first output signature based on the binary output signal, and generating a delayed first output signature based on the first output signature. The system and method further comprise generating a delayed binary output signal based on the delayed input signal, generating, by a checker part, a delayed second output signature based on the delayed binary output signal, comparing the delayed first output signature with the delayed second output signature, and generating an error signal, where the state of the error signal is based upon the comparison.

Abstract: A system and method for processing data for use with a microcontroller having a processing unit provides for sending an input data address to a memory as part of a read request for input data stored in the memory, receiving the input data from the memory, generating a plurality of trace signals, generating a first plurality of signatures based upon the plurality of trace signals, receiving a second plurality of corresponding signatures from a second microcontroller, comparing each signature of the first plurality of signatures to each corresponding signature of the second plurality of corresponding signatures, generating a first error signal if the comparison produces at least one mismatch, and utilizing the first error signal to generate one or more disable signals for disabling operation of one or more devices under control of the microcontroller.

Abstract: A system and method for signature-based redundancy comparison provides for receiving, by a master part, an input signal and generating, by the master part, a binary output signal, generating a delayed input signal based on the input signal, generating a first output signature based on the binary output signal, and generating a delayed first output signature based on the first output signature. The system and method further comprise generating a delayed binary output signal based on the delayed input signal, generating, by a checker part, a delayed second output signature based on the delayed binary output signal, comparing the delayed first output signature with the delayed second output signature, and generating an error signal, where the state of the error signal is based upon the comparison.

Abstract: A system and method for processing data for use with a microcontroller having a processing unit provides for sending an input data address to a memory as part of a read request for input data stored in the memory, receiving the input data from the memory, generating a plurality of trace signals, generating a first plurality of signatures based upon the plurality of trace signals, receiving a second plurality of corresponding signatures from a second microcontroller, comparing each signature of the first plurality of signatures to each corresponding signature of the second plurality of corresponding signatures, generating a first error signal if the comparison produces at least one mismatch, and utilizing the first error signal to generate one or more disable signals for disabling operation of one or more devices under control of the microcontroller.