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STM32F427AI Scheda tecnica(PDF) 122 Page - STMicroelectronics

Il numero della parte STM32F427AI
Spiegazioni elettronici  32b Arm® Cortex®-M4 MCUFPU, 225DMIPS, up to 2MB Flash/2564KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 com. interfaces, camera & LCD-TFT
PDF  240 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F427AI Scheda tecnica(HTML) 122 Page - STMicroelectronics

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Electrical characteristics
STM32F427xx STM32F429xx
122/240
DS9405 Rev 12
Figure 30. Typical application with a 32.768 kHz crystal
6.3.10
Internal clock source characteristics
The parameters given in Table 41 and Table 42 are derived from tests performed under
ambient temperature and VDD supply voltage conditions summarized in Table 17.
High-speed internal (HSI) RC oscillator
ai17531
OSC32_OU T
OSC32_IN
fLSE
CL1
RF
STM32F
32.768 kH z
resonator
Resonator with
integrated capacitors
Bias
controlled
gain
CL2
Table 41. HSI oscillator characteristics (1)
1. VDD = 3.3 V, PLL OFF, TA = –40 to 125 °C unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fHSI
Frequency
-
-
16
-
MHz
ACCHSI
HSI user-trimming step (2)
2. Specified by design.
--
-
1
%
Accuracy of the HSI oscillator
TA = –40 to 105 °C(3)
3. Evaluated by characterization results.
− 8-4.5
%
TA = –10 to 85 °C(3)
− 4-
4
%
TA = 25 °C(4)
4. Factory calibrated, parts not soldered.
− 1-
1
%
tsu(HSI)(2) HSI oscillator startup time
-
-
2.2
4
µs
IDD(HSI)(2)
HSI oscillator power
consumption
-
-
60
80
µA



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