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UM0225 Fiches technique(PDF) 23 Page - STMicroelectronics

No de pièce UM0225
Description  Configuration and programming software
PDF  57 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0225 Fiches technique(HTML) 23 Page - STMicroelectronics

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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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