STM32F479II datasheet(89/208 Pages) STMICROELECTRONICS

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DocID028010 Rev 2

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STM32F479xx

Electrical characteristics

187

5.3

Operating conditions

5.3.1

General operating conditions

Table 17. General operating conditions

Symbol

Parameter

Conditions(1)

Min

Typ

Max

Unit

fHCLK

Internal AHB clock frequency

Power Scale 3 (VOS[1:0] bits in PWR_CR

Regulator ON, over-drive OFF

120

MHz

Power Scale 2 (VOS[1:0] bits

in PWR_CR register = 0x10),

Regulator ON

Over-drive

OFF

-144

Over-drive

-168

Power Scale 1 (VOS[1:0] bits

in PWR_CR register= 0x11),

Regulator ON

Over-drive

OFF

-168

Over-drive

-180

fPCLK1

Internal APB1 clock frequency

Over-drive OFF

Over-drive ON

fPCLK2

Internal APB2 clock frequency

Over-drive OFF

Over-drive ON

VDD

Standard operating voltage

1.7(2)

-3.6

VDDA(3)(4)

Analog operating voltage

(ADC limited to 1.2 M samples)

Must be the same potential as VDD(5)

1.7(2)

-2.4

Analog operating voltage

(ADC limited to 2.4 M samples)

2.4

3.6

VDDUSB

USB supply voltage

(supply voltage for PA11, PA12,

PB14 and PB15 pins)

USB not used

1.7

3.3

3.6

USB used

3.0

3.6

VDDDSI DSI system operating voltage

1.7(2)

-3.6

VBAT

Backup operating voltage

1.65

3.6

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