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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STGAP1S датащи(PDF) 39 Page - STMicroelectronics |
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STGAP1S датащи(HTML) 39 Page - STMicroelectronics |
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39 / 67 page  DocID027190 Rev 3 39/67 STGAP1S Functional description 67 7.14.3 SENSE comparator check The purpose of this security check is to verify the functionality of the sense comparator. To enable this check, it is required to set SNSCHK = '1' and SENSE_EN = '1'. When this check is enabled the switch in series to the SENSE pin is open (see Figure 18); a SENSE fault (STATUS1 register) should be reported within tSENSEchk, otherwise the SENSE comparator operation is compromised. VSENSEcomp > VSENSEth → comparator OK → SENSE = '1' VSENSEcomp < VSENSEth → comparator FAIL → SENSE = '0' The SENSE fault generated by this test is latched and shall be cleared accordingly. Figure 18. SENSE comparator and resistor check circuitry Level Shifter Floating Section Control Logic Floating ground VH GON GOFF VL CLAMP GNDISO SENSE VSENSEth + Rtest VH RSENSE testcontrol SD SDO CK SDI ISENSERchk testcontrol SPI Control Logic I S O L A T I O N CS SENSEcomp |
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