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STM32F302X6 データシート(PDF) 73 Page - STMicroelectronics

部品番号 STM32F302X6
部品情報  Arm® Cortex®-M4 32-bit MCUFPU, up to 64 KB Flash, 16 KB SRAM, ADC, DAC, USB, CAN, COMP, Op-Amp, 2.0 - 3.6 V
PDF  139 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F302X6 データシート(HTML) 73 Page - STMicroelectronics

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STM32F302x6 STM32F302x8
Electrical characteristics
117
6.3.7
External clock source characteristics
High-speed external user clock generated from an external source
In bypass mode the HSE oscillator is switched off and the input pin is a standard GPIO. The
external clock signal has to respect the I/O characteristics in Section 6.3.14. However, the
recommended clock input waveform is shown in Figure 14.
Figure 14. High-speed external clock source AC timing diagram
Table 39. High-speed external user clock characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fHSE_ext
User external clock source
frequency(1)
1. Guaranteed by design.
-
18
32
MHz
VHSEH
OSC_IN input pin high level voltage
0.7VDD
-VDD
V
VHSEL
OSC_IN input pin low level voltage
VSS
-0.3VDD
tw(HSEH)
tw(HSEL)
OSC_IN high or low time(1)
15
-
-
ns
tr(HSE)
tf(HSE)
OSC_IN rise or fall time(1)
--
20
MS19214V2
VHSEH
tf(HSE)
90%
10%
THSE
t
tr(HSE)
VHSEL
tw(HSEH)
tw(HSEL)



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