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STM32F215RE Datasheet(PDF) 71 Page - STMicroelectronics

No. de pieza STM32F215RE
Descripción Electrónicos  ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/1284KB RAM
PDF  175 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F215RE Datasheet(HTML) 71 Page - STMicroelectronics

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STM32F21xxx
Electrical characteristics
174
Figure 19. Number of wait states versus fCPU and VDD range
6.3.2
VCAP1/VCAP2 external capacitor
Stabilization for the main regulator is achieved by connecting an external capacitor to the
VCAP1/VCAP2 pins. CEXT is specified in Table 15.
Figure 20. External capacitor CEXT
1. Legend: ESR is the equivalent series resistance.
ai18748b
0
1
2
3
4
5
6
7
8
Fcpu (MHz)
Wait states vs Fcpu and VDD range
1.8 to 2.1V
2.1 to 2.4V
2.4 to 2.7V
2.7 to 3.6V
Table 15. VCAP1/VCAP2 operating conditions(1)
1. When bypassing the voltage regulator, the two 2.2 µF VCAP capacitors are not required and should be
replaced by two 100 nF decoupling capacitors.
Symbol
Parameter
Conditions
CEXT
Capacitance of external capacitor
2.2 µF
ESR
ESR of external capacitor
< 2
Ω
MS19044V2
ESR
R Leak
C



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