Stmicroelectronics S.r.l.

Stmicroelectronics Application Gmbh

Mose' Alessandro Pernice

Roberto Colombo

Rosario Martorana

A set of configuration memory locations store configuration data for a microcontroller unit. A hardware monitoring module is coupled by an interconnection bus to the configuration memory locations. The hardware monitoring module reads from an instruction memory a command including an address of a target memory location in the set of configuration memory locations. Data is read from the target memory location corresponding to the address read and a checksum value is computed as a function of the data that is read from the target memory location. The computed checksum value is then compared to a respective expected checksum value stored in a checksum storage unit. An alarm signal is triggered in response to a mismatch detected between the computed checksum value and the respective expected checksum value.

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Patyerno', Italy

Mose' Alessandro Pernice