STM32L431 datasheet(80/200 Pages) STMICROELECTRONICS

80 / 200 page

Electrical characteristics

STM32L431xx

80/200

DocID028800 Rev 1

6.1.7

Current consumption measurement

Figure 18. Current consumption measurement scheme

6.2

Absolute maximum ratings

Stresses above the absolute maximum ratings listed in Table 18: Voltage characteristics,

Table 19: Current characteristics and Table 20: 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.

Table 18. Voltage characteristics(1)

Symbol

Ratings

Min

Max

Unit

VDDX - VSS

External main supply voltage (including

VDD, VDDA, VBAT)

-0.3

4.0

VIN(2)

Input voltage on FT_xxx pins

VSS-0.3

min (VDD, VDDA) + 4.0(3)(4)

Input voltage on TT_xx pins

VSS-0.3

4.0

Input voltage on any other pins

VSS-0.3

4.0

|∆VDDx|

Variations between different VDDX power

pins of the same domain

-50

|VSSx-VSS|

Variations between all the different ground

pins(5)

-50

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

the permitted range.

2. VIN maximum must always be respected. Refer to Table 19: Current characteristics for the maximum allowed injected

current values.

3. This formula has to be applied only on the power supplies related to the IO structure described in the pin definition table.

4. To sustain a voltage higher than 4 V the internal pull-up/pull-down resistors must be disabled.

5. Include VREF- pin.

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