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L9924LTR датащи(PDF) 47 Page - STMicroelectronics |
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L9924LTR датащи(HTML) 47 Page - STMicroelectronics |
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47 / 84 page ![]() DocID028840 Rev 3 47/84 L9924L Warning, alarms and faults 83 5 Warning, alarms and faults As general approach, the device provides embedded and automatic safety checks: in this way any critical condition is automatically managed by hardware without the need of the application software that has the task to signal the event and to apply, if possible, the proper restore procedure or to keep the system in a safe status. 5.1 System error flags The following events, signaled in SPI read register 0x12 [12.4.5] are foreseen: Table 32. System error flags Bit Description Action EXTP_OC Excitation overcurrent [4.3.10] HW and SW This flag has an effect also on CP_LOW bit THSD Overtemperature None PHO_OC Phase out overcurrent [4.3.18] HW and SW CP_LOW Charge pump low voltage [4.3.19] HW and SW APLUS_OV Battery overvoltage [4.3.1] HW and SW APLUS_UV Battery undervoltage [4.3.1] None LIN_PERM_DOM LIN Permanent Dominant HW and SW LIN_TXD_DOM LIN Dominant TXD HW and SW LIN_PERM_REC LIN Permanent Recessive HW and SW DFM_OC DFM overcurrent [4.3.6] HW and SW L_HS_OC L High-side overcurrent [4.3.13] HW and SW L_LS_OC L Low-side overcurrent [4.3.15] HW and SW LHC_HS_OC LHC High-side overcurrent [4.3.15] HW and SW LHC_LS_OC LHC Low-side overcurrent [4.3.15] HW and SW |
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