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STM32F439AI Datasheet(PDF) 99 Page - STMicroelectronics

Part # STM32F439AI
Description  ARM Cortex-M4 32b MCUFPU, 225DMIPS, up to 2MB Flash/2564KB RAM, crypto, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 comm. interfaces, camera&LCD-TFT
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F439AI Datasheet(HTML) 99 Page - STMicroelectronics

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STM32F437xx and STM32F439xx
Electrical characteristics
198
6.3.6
Over-drive switching characteristics
When the over-drive mode switches from enabled to disabled or disabled to enabled, the
system clock is stalled during the internal voltage set-up.
The over-drive switching characteristics are given in Table 23. They are sbject to general
operating conditions for TA.
IRUSH(1)
InRush current on
voltage regulator power-
on (POR or wakeup
from Standby)
-
160
200
mA
ERUSH(1)
InRush energy on
voltage regulator power-
on (POR or wakeup
from Standby)
VDD = 1.7 V, TA = 105 °C,
IRUSH = 171 mA for 31 µs
--
5.4
µC
1. Guaranteed by design.
2. The reset temporization is measured from the power-on (POR reset or wakeup from VBAT) to the instant
when first instruction is read by the user application code.
Table 22. reset and power control block characteristics (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Table 23. Over-drive switching characteristics(1)
1. Guaranteed by design.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Tod_swen
Over_drive switch
enable time
HSI
-
45
-
µs
HSE max for 4 MHz
and min for 26 MHz
45
-
100
External HSE
50 MHz
-
40
-
Tod_swdis
Over_drive switch
disable time
HSI
-
20
-
HSE max for 4 MHz
and min for 26 MHz.
20
-
80
External HSE
50 MHz
-
15
-


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