A processing system comprising: - a timer circuit configured to generate, in response to a clock signal, a system time signal comprising a plurality of bits indicative of a time tick-count, wherein said timer circuit is configured to increase said global system time signal in response to said clock signal; - a processing circuit configured to: a) receive said system time signal from said timer circuit, b) detect whether said system time signal reaches or exceeds a given reference value, and c) start execution of a given processing operation when said detection indicates that said system time signal has reached or has exceeded said given reference value; characterized in that said processing system comprises: - an error code calculation circuit configured to compute a first set of error detection bits as a function of said bits of said system time signal transmitted to said processing circuit; - a first error detection circuit configured to: a) compute a second set of error detection bits as a function of said bits of said system time signal received by said processing circuit, b) compare said first set of error detection bits with said second set of error detection bits, and c) generate a first error signal when said comparison indicates said first set of error detection bits does not correspond to said second set of error detection bits; - a trigger generator configured to generate a trigger signal (TRIG) comprising a trigger when said system time signal increases by a given amount, and at least one of: - a watchdog timer configured to generate a third error signal when the time between two consecutive triggers in said trigger signal (TRIG) is greater than a given first maximum time; and - a further timer circuit configured to generate a fourth error signal when the time between two consecutive triggers in said trigger signal (TRIG) is not between a lower threshold and an upper threshold. - a timer circuit configured to generate, in response to a clock signal, a system time signal comprising a plurality of bits indicative of a time tick-count, wherein said timer circuit is configured to increase said global system time signal in response to said clock signal; - a processing circuit configured to: a) receive said system time signal from said timer circuit, b) detect whether said system time signal reaches or exceeds a given reference value, and c) start execution of a given processing operation when said detection indicates that said system time signal has reached or has exceeded said given reference value; characterized in that said processing system a) receive said system time signal from said timer circuit, b) detect whether said system time signal reaches or exceeds a given reference value, and c) start execution of a given processing operation when said detection indicates that said system time signal has reached or has exceeded said given reference value; characterized in that said processing system - an error code calculation circuit configured to compute a first set of error detection bits as a function of said bits of said system time signal transmitted to said processing circuit; - a first error detection circuit configured to: a) compute a second set of error detection bits as a function of said bits of said system time signal received by said processing circuit, b) compare said first set of error detection bits with said second set of error detection bits, and c) generate a first error signal when said comparison indicates said first set of error detection bits does not correspond to said second set of error detection bits; a) compute a second set of error detection bits as a function of said bits of said system time signal received by said processing circuit, b) compare said first set of error detection bits with said second set of error detection bits, and c) generate a first error signal when said comparison indicates said first set of error detection bits does not correspond to said second set of error detection bits; - a trigger generator configured to generate a trigger signal (TRIG) comprising a trigger when said system time signal increases by a given amount, and at least one of: - a watchdog timer configured to generate a third error signal when the time between two consecutive triggers in said trigger signal (TRIG) is greater than a given first maximum time; and - a further timer circuit configured to generate a fourth error signal when the time between two consecutive triggers in said trigger signal (TRIG) is not between a lower threshold and an upper threshold. - a watchdog timer configured to generate a third error signal when the time between two consecutive triggers in said trigger signal (TRIG) is greater than a given first maximum time; and - a further timer circuit configured to generate a fourth error signal when the time between two consecutive triggers in said trigger signal (TRIG) is not between a lower threshold and an upper threshold.