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STM32F091CBH6TP Datasheet(PDF) 68 Page - STMicroelectronics

No. de pieza STM32F091CBH6TP
Descripción Electrónicos  ARM®-based 32-bit MCU, up to 256 KB Flash, CAN, 12 timers, ADC, DAC, and comm. interfaces, 2.0 - 3.6V
PDF  128 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F091CBH6TP Datasheet(HTML) 68 Page - STMicroelectronics

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Electrical characteristics
STM32F091xB STM32F091xC
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DocID026284 Rev 4
Figure 15. High-speed external clock source AC timing diagram
Low-speed external user clock generated from an external source
In bypass mode the LSE 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 16.
Figure 16. Low-speed external clock source AC timing diagram
1. Guaranteed by design, not tested in production.
Table 38. Low-speed external user clock characteristics
Symbol
Parameter(1)
1. Guaranteed by design, not tested in production.
Min
Typ
Max
Unit
fLSE_ext User external clock source frequency
-
32.768
1000
kHz
VLSEH OSC32_IN input pin high level voltage
0.7 VDDIOx
-VDDIOx
V
VLSEL
OSC32_IN input pin low level voltage
VSS
-
0.3 VDDIOx
tw(LSEH)
tw(LSEL)
OSC32_IN high or low time
450
-
-
ns
tr(LSE)
tf(LSE)
OSC32_IN rise or fall time
-
-
50



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