RM0082
Clock & reset system
Doc ID 018672 Rev 1
207/844
It can be shown that the period drift in this case is twice the input clock period.
To program the synthesizer please refer to paragraph
Section 12.4.15: Auxiliary clock
in the Miscellaneous registers (MISC) chapter.Main oscillator
11.2.6 Crystal
connection
Figure 19.
Main Crystal Connection
Note:
The value of the capacitors depend on the type of the selected crystal. As an example, in
STM reference board we have chosen RAKON, P/N Xtal003325 24 MHz oscillator, the value
of the capacitors is 33pF.
11.3 RTC
oscillator
11.3.1 Crystal
connection
Figure 20.
RTC crystal connection
Note:
The value of the capacitors depend on the type of the selected crystal. As an example, in
STM reference board we have chosen Fox Electronics, P/N NC26LF-327 32.768 kHz
oscillator, the value of the capacitors is 15pF.
Xi
Xo
24MHz
VDD2.5V
Xi
Xo
32.768KHz
GND