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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN4467 датащи(PDF) 28 Page - STMicroelectronics |
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AN4467 датащи(HTML) 28 Page - STMicroelectronics |
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28 / 33 page  Reference design AN4467 28/33 DocID026156 Rev 2 6 Reference design 6.1 Description The reference design shown in Figure 15, is based on the STM32L053RBT6 . This reference design can be tailored to any Root part number 1 device with a different package, using the pin correspondence given in Table 7: Reference connection for all packages. 6.1.1 Clock Two clock sources are used for the microcontroller: • LSE: X2– 32.768 kHz crystal for the embedded RTC • HSE: X1– 8 MHz crystal for the Root part number 1 microcontroller Refer to Section 2: Clocks. 6.1.2 Reset The reset signal in Figure 15 is active low. The reset sources include: • Reset button (B1) • Debugging tools via the connector CN1 Refer to Section 1.3: Reset and power supply supervisor. 6.1.3 Boot mode The boot option is configured by setting switches SW1 (Boot 0). Refer to Section 3: Boot configuration. Note: When waking up from Standby mode, the Boot pin is sampled. In this situation, you need to pay attention to its value. 6.1.4 SWD interface The reference design shows the connection between the Root part number 1 and a standard SWD connector. Refer to Section 4: Debug management. Note: It is recommended to connect the reset pins so as to be able to reset the application from the tools. 6.1.5 Power supply Refer to Section 1: Power supplies. |
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