STM32L021D4 datasheet(46/114 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L021x4

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DocID027982 Rev 5

6.2

Absolute maximum ratings

Stresses above the absolute maximum ratings listed in Table 14: Voltage characteristics,

Table 15: Current characteristics, and Table 16: 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. Device mission profile (application conditions)

is compliant with JEDEC JESD47 Qualification Standard. Extended mission profiles are

available on demand.

Table 14. Voltage characteristics

Symbol

Ratings

Min

Max

Unit

VDD–VSS

External main supply voltage

(including VDDA, VDD)(1)

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

supply, in the permitted range.

–0.3

4.0

VIN(2)

VIN maximum must always be respected. Refer to Table 15 for maximum allowed injected current values.

Input voltage on FT and FTf pins

VSS −0.3

VDD+4.0

Input voltage on TC pins

VSS −0.3

4.0

Input voltage on BOOT0

VSS

VDD +4.0

Input voltage on any other pin

VSS −0.3

4.0

ΔVDD|

Variations between different VDDx power pins

|VDDA-VDDx|

Variations between any VDDx and VDDA power

pins(3)

3. It is recommended to power VDD and VDDA from the same source. A maximum difference of 300 mV

between VDD and VDDA can be tolerated during power-up and device operation. its value does not need to

respect this rule.

300

ΔVSS|

Variations between all different ground pins

VESD(HBM)

Electrostatic discharge voltage

(human body model)

see Section 6.3.11

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