STM32F205XX_12 STMICROELECTRONICS [STMicroelectronics], STM32F205XX_12 Datasheet - Page 66

• Manufacturer Part Number: STM32F205XX_12
• Description: ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Electrical characteristics
5.3.2
66/177
Figure 19. Number of wait states versus f
1. The supply voltage can drop to 1.7 V when the device operates in the 0 to 70 °C temperature range and
VCAP1/VCAP2 external capacitor
Stabilization for the main regulator is achieved by connecting an external capacitor to the
VCAP1/VCAP2 pins. C
Figure 20. External capacitor C
1. Legend: ESR is the equivalent series resistance.
Table 14.
1. When bypassing the voltage regulator, the two 2.2 µF V
IRROFF is set to V
replaced by two 100 nF decoupling capacitors.
Symbol
CEXT
ESR
VCAP1/VCAP2 operating conditions
8
7
6
5
4
3
2
1
0
DD
.
ESR
Capacitance of external capacitor
EXT
ESR of external capacitor
is specified in
Doc ID 15818 Rev 9
Parameter
Wait states vs Fcpu and VDD range
EXT
Fcpu (MHz)
Table
CPU
14.
CAP
R Leak
and V
capacitors are not required and should be
(1)
C
DD
range
Conditions
2.2 µF
< 2 Ω
1.8 to 2.1V
2.1 to 2.4V
2.4 to 2.7V
2.7 to 3.6V
STM32F20xxx
MS19044V1
ai18748b