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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9177ATR датащи(PDF) 26 Page - STMicroelectronics |
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L9177ATR датащи(HTML) 26 Page - STMicroelectronics |
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26 / 55 page  Figure 18. Current generator block diagram GAPGPS00602 3.3 Power up/down sequences The figures below show the power-on, power-off and time diagram behaviour of the device. VDD_SB (standby voltage) rises together with battery input, and in standby it is always present if battery is present, no matter the KEY_IN status. When the KEY_IN signal rises up and remains stable for at least T_key_deglitch (see Table 7), the device goes in ON state, meaning that all voltage regulators and functions are active. Wake-up is an intermediate status between standby and on mode, with current consumption higher than the standby one. When Key_IN goes low, device goes in OFF mode but standby regulator remains ON. L9177A Power up/down sequences DS12175 - Rev 5 page 26/55 |
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