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STM32F205RB Scheda tecnica(PDF) 66 Page - STMicroelectronics

Il numero della parte STM32F205RB
Spiegazioni elettronici  ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/1284KB RAM
PDF  177 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F205RB Scheda tecnica(HTML) 66 Page - STMicroelectronics

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Electrical characteristics
STM32F20xxx
66/177
Doc ID 15818 Rev 9
Figure 19.
Number of wait states versus fCPU and VDD range
1.
The supply voltage can drop to 1.7 V when the device operates in the 0 to 70 °C temperature range and
IRROFF is set to VDD.
5.3.2
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 14.
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 14.
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
MS19044V1
ESR
R Leak
C



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