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L9305EP датащи(PDF) 38 Page - STMicroelectronics |
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L9305EP датащи(HTML) 38 Page - STMicroelectronics |
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38 / 107 page ![]() 8 Safety features The L9305 has several integrated features to enable a reliable functional safety system implementation. A complete list of all monitoring and self-test functions is shown in the next table. The following sections detail these features. Table 22. Safety monitors and self test summary Function Primary monitor Self test Supply monitors Vbat OV POR VCP UV POR VDD OV & UV POR GNDA LOSS POR GNDD LOSS POR Global functions internal monitors V3V3AN OV & UV POR V3V3Dig OV & UV POR Trimming Data Error CRC None Global Register Error Mismatch None SPI Timeout None SPI n * Timeout Latch None Core Temperature Over Temperature None Oscillator Diag Clk stuck-at None Oscillator Clock Mismatch + Main Clk stuck-at None Solenoid channel internal monitor GND_SOLx LOSS POR & On Demand HS (On state) OC None LS (On State) OC None LS Clamp, On State (Only in LS conf) OV (dis. for VB > 27V) None STG, Off State (Only in LS conf) On Demand Only Open Load, Off State On Demand Only STB, Off State (Only in HS conf) On Demand Only ADC Mismatch ADC Compare Channel on Only EPROM Calibration Data Error CRC & Data Compare None Trim Data Error CRC None RAM Calibration Data Error CRC None Driver Temperature Over Temperature None Driver Status Command vs. Actual On Demand Only Solenoid Register Error Mismatch None Out of regulation On Demand Only HS/LS compare Channel on Only Solenoid Driver Control Loop Logic Bist On Demand Only Fail safe VDS protection OV None L9305 Safety features DS12774 - Rev 10 page 38/107 |
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