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STM32F427AI データシート(PDF) 121 Page - STMicroelectronics

部品番号 STM32F427AI
部品情報  ARM Cortex-M4 32b MCUFPU, 225DMIPS, up to 2MB Flash/2564KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 comm. interfaces, camera & LCD-TFT
PDF  239 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F427AI データシート(HTML) 121 Page - STMicroelectronics

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STM32F427xx STM32F429xx
Electrical characteristics
197
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
Table 41. HSI oscillator characteristics (1)
1. VDD = 3.3 V, TA = –40 to 105 °C unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fHSI
Frequency
-
-
16
-
MHz
ACCHSI
HSI user-trimming step (2)
2. Guaranteed by design.
--
-
1
%
Accuracy of the HSI oscillator
TA = –40 to 105 °C(3)
3. Guaranteed 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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