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STM32F334 Folha de dados(PDF) 67 Page - STMicroelectronics

Nome de Peças STM32F334
Descrição Electrónicos  ARMCortex-M4 32b MCUFPU,up to 64KB Flash,16KB SRAM, 2 ADCs,3 DACs,3 comp.,op-amp, 217ps 10-ch (HRTIM1)
PDF  115 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F334 Folha de dados(HTML) 67 Page - STMicroelectronics

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STM32F334x4 STM32F334x6 STM32F334x8
Electrical characteristics
100
Note:
For information on selecting the crystal, refer to the application note AN2867 “Oscillator
design guide for ST microcontrollers” available from the ST website www.st.com.
Table 39. LSE oscillator characteristics (fLSE = 32.768 kHz)
Symbol
Parameter
Conditions(1)
1. Refer to the note and caution paragraphs below the table, and to the application note AN2867 “Oscillator
design guide for ST microcontrollers”.
Min.
(2)
2. Guaranteed by design, not tested in production.
Typ.
Max.(
2)
Unit
IDD
LSE current consumption
LSEDRV[1:0]=00
lower driving capability
-0.5
0.9
µA
LSEDRV[1:0]=10
medium low driving
capability
--
1
LSEDRV[1:0]=01
medium high driving
capability
--
1.3
LSEDRV[1:0]=11
higher driving capability
--
1.6
gm
Oscillator
transconductance
LSEDRV[1:0]=00
lower driving capability
5-
-
µA/V
LSEDRV[1:0]=10
medium low driving
capability
8-
-
LSEDRV[1:0]=01
medium high driving
capability
15
-
-
LSEDRV[1:0]=11
higher driving capability
25
-
-
tSU(LSE)(3)
3.
tSU(LSE) is the startup time measured from the moment it is enabled (by software) to a stabilized
32.768 kHz oscillation is reached. This value is measured for a standard crystal and it can vary significantly
with the crystal manufacturer.
Startup time
VDD is stabilized
-
2
-
s



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