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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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VNF9D5F датащи(PDF) 57 Page - STMicroelectronics |
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VNF9D5F датащи(HTML) 57 Page - STMicroelectronics |
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57 / 108 page  Synchronous mode in DC condition This mode (PWM with 100% duty cycle) is equivalent to the asynchronous mode. Table 40. ADC Configurations registers SOCrx DIx DutyCrx SPCR1, 0 Conversion Mode Feedback type 1 X X 00 Synchronous triggered by falling edge on the internal PWM signal Output current 1 X X 01 Synchronous triggered by rising edge on the internal PWM signal Output current 1 X X 10 Asynchronous with continuous sampling Output current 1 X X 11 Asynchronous with continuous sampling and digital LP filter Output current 0 1 X X (Fail Safe mode) Asynchronous with continuous sampling Output current X X X X Tframe conversion (Always lower priority than current sampled modes) Tframe sensor voltage 5.2 Integrated LP (progressive average) filter In asynchronous mode, when the filtered mode is selected through the dedicated bits “SPCR1 = 1” and “SPCR0 = 1”, the integrated LP filter is activated. This component will filter the data coming from the ADC conversion reducing the effect of random noise coming from the analog Current Sense amplifier. Features of the integrated LP filter: • 1st order decimating filter on 16 samples. • 1st result after 1 sample with progressive averaging of 16 successive samples. dataN = dataN−1*1516+datai/16 (1) • Continue to accumulate samples during PWM with SOCR = 1. • Keep digitalized value when the channel is turned off. VNF9D5F Diagnostic DS13946 - Rev 8 page 57/108 |
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