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Timer-Slide7

The second logic block is used for clock monitoring. It is a very simple block connected between the internal low speed oscillator or internal sub oscillator and channel 5’s timer input. Internal logic allows monitoring of the device’s clocks, which is a requirement of IEC 60730 regulations. Using this logic it is easily possible to check the main system clock frequency by comparing it to another available clock signal which is completely independent of the main system clock.

PTM Published on: 2012-04-17