Datasheet

STM32F101xF, STM32F101xG Electrical characteristics
Doc ID 17143 Rev 2 51/108
Figure 17. High-speed external clock source AC timing diagram
Figure 18. Low-speed external clock source AC timing diagram
ai14127b
OSC _I N
External
clock source
STM32F10xxx
V
HSEH
t
f(HSE)
t
W(HSE)
I
L
90%
10%
T
HSE
t
t
r(HSE)
t
W(HSE)
f
HSE_ext
V
HSEL
ai14140c
OSC32_IN
External
clock source
STM32F10xxx
V
LSEH
t
f(LSE)
t
W(LSE)
I
L
90%
10%
T
LSE
t
t
r(LSE)
t
W(LSE)
f
LSE_ext
V
LSEL