Datasheet

Electrical characteristics STM32F410x8/B
56/142 DocID028094 Rev 5
6.3.2 VCAP_1 external capacitor
Stabilization for the main regulator is achieved by connecting the external capacitor C
EXT
to
the VCAP_1 pin.
C
EXT
is specified in Table 17.
Figure 15. External capacitor C
EXT
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 T
A
.
6.3.4 Operating conditions at power-up / power-down (regulator OFF)
Subject to general operating conditions for T
A
.
Table 17. VCAP_1 operating conditions
Symbol Parameter Conditions
CEXT Capacitance of external capacitor 4.7 µF
ESR ESR of external capacitor < 1 Ω
069
(65
5
/HDN
&
Table 18. Operating conditions at power-up / power-down (regulator ON)
Symbol Parameter Min Max Unit
t
VDD
V
DD
rise time rate 20 ∞
µs/V
V
DD
fall time rate 20 ∞
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 V
DD
reach below
1.08 V.
Symbol Parameter Conditions Min Max Unit
t
VDD
V
DD
rise time rate Power-up 20 ∞
µs/V
V
DD
fall time rate Power-down 20 ∞
t
VCAP
V
CAP_1
rise time rate Power-up 20 ∞
V
CAP_1
fall time rate Power-down 20 ∞
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