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STM32F071C8 датащи(PDF) 27 Page - STMicroelectronics |
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STM32F071C8 датащи(HTML) 27 Page - STMicroelectronics |
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27 / 122 page ![]() DocID025451 Rev 5 27/122 STM32F071x8 STM32F071xB Functional overview 27 overhead. It has a clock domain independent from the CPU clock, allowing the HDMI_CEC controller to wakeup the MCU from Stop mode on data reception. 3.20 Clock recovery system (CRS) The STM32F071x8/xB embeds a special block which allows automatic trimming of the internal 48 MHz oscillator to guarantee its optimal accuracy over the whole device operational range. This automatic trimming is based on the external synchronization signal, which could be either derived from LSE oscillator, from an external signal on CRS_SYNC pin or generated by user software. For faster lock-in during startup it is also possible to combine automatic trimming with manual trimming action. 3.21 Serial wire debug port (SW-DP) An ARM SW-DP interface is provided to allow a serial wire debugging tool to be connected to the MCU. |
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