STM32F479AI datasheet(105/208 Pages) STMICROELECTRONICS

部件名	STM32F479AI

功能描述	8- to 14-bit parallel camera interface up to 54 Mbytes

PDF	208 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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105 / 208 page

DocID028010 Rev 2

105/208

STM32F479xx

Electrical characteristics

187

the current from the MCU 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.

Table 32. Switching output I/O current consumption(1)

Symbol

Parameter

Conditions

I/O toggling

frequency

(fsw)

Typ

Unit

IDDIO

I/O switching

Current

VDD = 3.3 V

C= CINT(2)

2 MHz

0.0

8 MHz

0.2

25 MHz

0.6

50 MHz

1.1

60 MHz

1.3

84 MHz

1.8

90 MHz

1.9

VDD = 3.3 V

CEXT = 0 pF

C = CINT + CEXT + CS

2 MHz

0.1

8 MHz

0.4

25 MHz

1.23

50 MHz

2.43

60 MHz

2.93

84 MHz

3.86

90 MHz

4.07

STM32F479AI 数据表(PDF) 105 Page - STMicroelectronics

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