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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TESEO-LIV3F датащи(PDF) 16 Page - STMicroelectronics |
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TESEO-LIV3F датащи(HTML) 16 Page - STMicroelectronics |
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16 / 37 page  Clock generation Teseo-LIV3F 16/37 DS12152 Rev 7 5 Clock generation 5.1 Temperature-Compensated Crystal Oscillator (TCXO) Highly stable 26 MHz oscillator controls the down conversion process in RF block of the Teseo-LIV3F. Characteristics of this component are important factors for higher sensitivity to maximize performances especially in weak-signal environments, as well as to minimize TTFF (Time To First Fix) and better navigation stability. 5.2 Real Time Clock (RTC) This is an always-on power domain dedicated to RTC logic (backup system) with 32 Kbyte SRAM and supplied with a dedicated voltage regulator. The RTC provides a high resolution clock which can be used for GPS. It keeps the time when the system is inactive and it’s internally used to wake up the system when in low power mode. It has a clock trimming feature to compensate for the accuracy of the 32.768 kHz crystal and a secured time update. |
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