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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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L9924L 데이터시트(PDF) 18 Page - STMicroelectronics |
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L9924L 데이터시트(HTML) 18 Page - STMicroelectronics |
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18 / 84 page  Electrical specifications L9924L 18/84 DocID028840 Rev 3 If A+/B+ voltage overcomes the VBIntOvp value, the system switches the field excitation off and sets bit 7 of SPI read register 0x12 [12.4.6]: it's up to the application software to take the appropriate actions (lamp on, drivers off, etc.). A+/B+ signal, suitably conditioned and filtered by an 'active' divider equipped with a low- pass filter, is forwarded to µC pin AIN5. Figure 7. VB overvoltage protection 4.3.2 Pin "SENSE" The system battery can be alternatively sensed using the SENSE input, instead of A+ sensing path. A suitable resistor ladder can be selected by means of bit 12 of SPI write register 0x02, depending on the device operating mode (12 V or 24 V [12.4.11]). The signal, before being forwarded to µC pin AIN9, is filtered through single pole low-pass filter. Figure 8. Internal resistor ladder on pin SENSE |
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