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AN4067 Fiches technique(PDF) 12 Page - STMicroelectronics

No de pièce AN4067
Description  Microcontrollers of STM32F0x1
PDF  27 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4067 Fiches technique(HTML) 12 Page - STMicroelectronics

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Internal RC oscillator calibration
AN4067
12/27
DocID022913 Rev 2
Figure 7. Hardware connection using LSE as the reference frequency
1.
TI1_RPM: TIM14 input 1 remapping
2.
TI1_RPM: Timer input 1
3.
IC1PS: Input capture 1 prescaled
Note:
It is also possible to use MCO for this purpose.
3.2.2
Case where another source is used as the reference frequency to
measure HSI
Any signal with an accurate frequency can be used for the internal oscillator calibration, and
the external signal is one of the possibilities.
As shown in Figure 8 below, the reference signal should be connected to Timer 14
channel 1.
Figure 8. Hardware connection using external reference frequency
1.
TI1_RPM: TIM14 input 1 remapping
2.
TI1: Timer input 1
3.
IC1PS: Input capture 1 prescaled



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