Figure 14. High-Speed External Clock Source Ac Timing Diagram - ST STM32L15 QC Series Datasheet

Electrical characteristics
Table 26. High-speed external user clock characteristics
Symbol
V
HSEH
V
HSEL
t
w(HSEH)
t
w(HSEL)
t
r(HSE)
t
f(HSE)
C
in(HSE)
1. Guaranteed by design.
V HSEH
V HSEL
76/134
Parameter
OSC_IN input pin high level voltage
OSC_IN input pin low level voltage
OSC_IN high or low time
OSC_IN rise or fall time
OSC_IN input capacitance

Figure 14. High-speed external clock source AC timing diagram

90%
10%
t r(HSE)
DS10262 Rev 8
STM32L151xC/C-A STM32L152xC/C-A
Conditions
-
t w(HSEH)
t f(HSE)
T HSE
(1)
(continued)
Min Typ Max
0.7V - V
DD DD
V - 0.3V
SS
12 - -
- - 20
- 2.6 -
t w(HSEL)
MS19214V2
Unit
V
DD
ns
pF
t