STM32F103RCT6 Datasheet, PDF (57/130 Pages) STMicroelectronics – Clock, reset and supply management

STM32F103xC, STM32F103xD, STM32F103xE
Electrical characteristics
Figure 21. Low-speed external clock source AC timing diagram
VLSEH
VLSEL
90%
10%
tr(LSE)
tf(LSE)
TLSE
tW(LSE)
tW(LSE) t
EXTER NAL
CLOCK SOURC E
fLSE_ext
OSC32_IN
IL
STM32F103xx
ai14144b
Doc ID 14611 Rev 8
57/130