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UM0225 Fiches technique(PDF) 23 Page - STMicroelectronics |
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UM0225 Fiches technique(HTML) 23 Page - STMicroelectronics |
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23 / 57 page ![]() Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) UM0225 3 Designing with CAPS 22/56 Figure 14. RTC clocks selection, step 1 Enter the external crystal frequency, between 4 and 25 MHz, and with the same constraints as described, above. After selecting the clock source and specifying the frequencies, click Refresh to validate he input and refresh the clock calculation. 3.3.2 Specifying the clock divisor CAPS provides the facility for dividing the master clock to the CPU and peripherals to meet particular system requirements; Step 2: Specify Clock Divisors provides the following divider options. • RCLK Divider • HCLK Divider • PCLK Divider • FMICLK Divider |
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