STM32F103C4H6ATR STMICROELECTRONICS [STMicroelectronics], STM32F103C4H6ATR Datasheet - Page 44

• Manufacturer Part Number: STM32F103C4H6ATR
• Description: Low-density performance line, ARM-based 32-bit MCU with 16 or 32 KB Flash, USB, CAN, 6 timers, 2 ADCs, 6 communication interfaces
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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Figure 18. High-speed external clock source AC timing diagram
Figure 19. Low-speed external clock source AC timing diagram
High-speed external clock generated from a crystal/ceramic resonator
The high-speed external (HSE) clock can be supplied with a 4 to 16 MHz crystal/ceramic
resonator oscillator. All the information given in this paragraph are based on characterization
results obtained with typical external components specified in
the resonator and the load capacitors have to be placed as close as possible to the oscillator
pins in order to minimize output distortion and startup stabilization time. Refer to the crystal
resonator manufacturer for more details on the resonator characteristics (frequency,
package, accuracy).
V HSEH
V LSEH
V HSEL
V LSEL
90%
10%
90%
10%
EXTER NAL
CLOCK SOURC E
EXTER NAL
CLOCK SOURC E
t r(HSE)
t r(LSE)
f HSE_ext
f LSE_ext
Doc ID 15060 Rev 3
T HSE
T LSE
OSC _IN
OSC32_IN
t f(HSE)
t f(LSE)
t W(HSE)
t W(LSE)
I L
I L
STM32F103xx
STM32F103xx
Table
22. In the application,
t W(HSE)
t W(LSE)
ai14143
ai14144b
t
t