STM32F405XX_13 datasheet(91/185 Pages) STMICROELECTRONICS

Part #	STM32F405XX

Description	ARM Cortex-M4 32b MCUFPU, 210DMIPS, up to 1MB Flash/1924KB RAM, USB OTG HS/FS

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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STM32F405xx, STM32F407xx

Electrical characteristics

supply voltage to supply the I/O pin circuitry and to charge/discharge the capacitive load

(internal or external) connected to the pin:

where

ISW is the current sunk by a switching I/O to charge/discharge the capacitive load

VDD is the MCU supply voltage

fSW is the I/O switching frequency

C is the total capacitance seen by the I/O pin: C = CINT+ CEXT

The test pin is configured in push-pull output mode and is toggled by software at a fixed

frequency.

ISW

VDD fSW C

×

=

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