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M41TC8025CMC7F 数据表(PDF) 30 Page - STMicroelectronics |
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M41TC8025CMC7F 数据表(HTML) 30 Page - STMicroelectronics |
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30 / 41 page  Operation M41TC8025 30/41 DocID022873 Rev 4 Figure 19. Battery backup sequence 2.11.2 Application flowcharts The flowcharts in Figure 20 and Figure 21 give the user an example of the initial power-up routine and the initialization procedure of the M41TC8025. The user can modify them based on the real application. Figure 20. Initial power-up routine Table 23. Battery backup time AC characteristics Parameter Symbol Condition Min Typ Max Unit Power supply detection voltage 1 VDET - 2.2 V Power supply detection voltage 2 VLF - 1.6 V Power supply drop time tF -2 μs/V Initial power-up time tR1 - 10 ms/V Clock maintenance power-up time tR2 1.6 V to VCC 3.6 V 5 μs/V 1.6 V to VCC 3.6 V 15 μs/V Obsolete Product(s) - Obsolete Product(s) |
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