STM32F410RB datasheet(56/142 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F410x8/B

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DocID028094 Rev 5

6.3.2

VCAP_1 external capacitor

Stabilization for the main regulator is achieved by connecting the external capacitor CEXT to

the VCAP_1 pin.

CEXT is specified in Table 17.

Figure 15. External capacitor CEXT

1. Legend: ESR is the equivalent series resistance.

6.3.3

Operating conditions at power-up/power-down (regulator ON)

Subject to general operating conditions for TA.

6.3.4

Operating conditions at power-up / power-down (regulator OFF)

Subject to general operating conditions for TA.

Table 17. VCAP_1 operating conditions

Symbol

Parameter

Conditions

CEXT

Capacitance of external capacitor

4.7 µF

ESR

ESR of external capacitor

< 1

Table 18. Operating conditions at power-up / power-down (regulator ON)

Symbol

Parameter

Min

Max

Unit

tVDD

VDD rise time rate

∞

µs/V

VDD fall time rate

∞

Table 19. Operating conditions at power-up / power-down (regulator OFF)(1)

1. To reset the internal logic at power-down, a reset must be applied on pin PA0 when VDD reach below

1.08 V.

Symbol

Parameter

Conditions

Min

Max

Unit

tVDD

VDD rise time rate

Power-up

∞

µs/V

VDD fall time rate

Power-down

∞

tVCAP

VCAP_1 rise time rate

Power-up

∞

VCAP_1 fall time rate

Power-down

∞

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