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L9678PTR Datenblatt(PDF) 25 Page - STMicroelectronics |
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L9678PTR Datenblatt(HTML) 25 Page - STMicroelectronics |
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25 / 215 page ![]() DS11626 Rev 9 25/216 L9678P, L9678P-S Start-up power control 214 4.2.5 Power-up and power-down sequence The behavior of the IC during normal power-up and power-down is shown from Figure 5 to Figure 8. The following sequences represent just a subset of all possible power-up and power-down scenarios. In Figure 5 a normal IC power-up controlled by the state of the WAKEUP pin is shown. Figure 5. Normal power-up sequence - WAKEUP controlled Watchdog X X X - - - - Diagnostics X X X - - - - DC sensor interface X X X - - - - GPO drivers X X X - - - - Safing logic X X X - - - - ISO9141 X X X - - - - Table 4. Functions disabling by state (continued) Function Power Off Wake-up monitor Awake Start-up Run Power mode shutdown ER VIN current VBAT (VBATmon) WAKEUP VINT, CVDD POR ERBOOST WU_mon WU_on VDD5 VDD3V3 VDD3V3_U V RESET RESET Hold Time SPI ER charge on VER VBGOOD GAPGPS02863 |
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