STM32F378VC datasheet(55/131 Pages) STMICROELECTRONICS

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STM32F378xx

Electrical characteristics

110

6.2

Absolute maximum ratings

Stresses above the absolute maximum ratings listed in Table 19: Voltage characteristics,

Table 20: Current characteristics, and Table 21: Thermal characteristics may cause

permanent damage to the device. These are stress ratings only and functional operation of

the device at these conditions is not implied. Exposure to maximum rating conditions for

extended periods may affect device reliability.

All main power (VDD, VDDSD12, VDDSD3 and VDDA) and ground (VSS, VSSSD, and VSSA) pins

must always be connected to the external power supply, in the permitted range.

The following relationship must be respected between VDDA and VDD: VDDA must power on

before or at the same time as VDD in the power up sequence. VDDA must be greater than or

equal to VDD.

The following relationship must be respected between VDDA and VDDSD12: VDDA must power

on before or at the same time as VDDSD12 or VDDSD3 in the power up sequence. VDDA must

be greater than or equal to VDDSD12 or VDDSD3.

Table 19. Voltage characteristics(1)

Symbol

Ratings

Min

Max

Unit

VDDA–VSS

External main supply voltage (including VDDA, VDDSDx, VBAT)

−0.3

4.0

VDD–VSS

External supply voltage VDD

−0.3

1.95

VDD–VDDA

Allowed voltage difference for VDD > VDDA

-0.4

VDDSDx – VDDA Allowed voltage difference for VDDSDx > VDDA

-0.4

VREFSD+ –

VDDSD3

Allowed voltage difference for VREFSD+ > VDDSD3

-0.4

VREF+ – VDDA

Allowed voltage difference for VREF+ > VDDA

-0.4

VIN(2)

Input voltage on FT and FTf pins

VSS −0.3

VDD + 4.0

Input voltage on POR pins

VSS −0.3

VDDA + 4.0

Input voltage on TTa pins

VSS −0.3

4.0

Input voltage on TC pins on SDADCx channels inputs(3)

VSS −0.3

4.0

Input voltage on any other pin

VSS −0.3

4.0

|VSSX - VSS|

Variations between all the different ground pins

-50

|VREFSD- - VSSx|-

VESD(HBM)

Electrostatic discharge voltage (human body model)

see Section 6.3.11:

Electrical sensitivity

characteristics

1. All main power (VDD, VDDA) and ground (VSS, VSSA) pins must always be connected to the external power supply, in the

permitted range.

VIN maximum must always be respected. Refer to Table 20: Current characteristics for the maximum allowed injected

current values.

3. VDDSD12 is the external power supply for the PB10, and PE7 to PE15 I/O pins (the I/O pin ground is internally connected

to VSS). VDDSD3 is the external power supply for PB14 to PB15 and PD8 to PD15 I/O pins (the I/O pin ground is internally

connected to VSS).

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