Inside Secure

Atmel Rousset S.a.s.

Gaetan Bracmard

Stephane Godzinski

Julien Roche

Jean-Pascal Maraninchi

A method for adjusting an oscillator clock frequency, comprising: providing a first oscillator, applying a first setpoint value to the first oscillator, determining a first oscillator frequency value within a first time frame, providing a second oscillator, applying a second setpoint value to the second oscillator, determining a second oscillator frequency value within a second time frame, determining a new frequency setpoint value from the first and second frequency values, the first and second setpoint values, and a desired frequency value, and applying the new frequency setpoint value to one of the first and second oscillators.

Clock frequency adjusting method and circuit

A method including monitoring whether an externally originating signal reaches a predetermined threshold value in a host, producing an output value based on the monitoring, and identifying a power environment for the host based on the output value is described. Also described is a method for determining the power environment of a host. Systems and hosts for implementing the methods are also described.

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Saint Savournin, France

Gaetan Bracmard