ST72321R7-Auto datasheet(186/243 Pages) STMICROELECTRONICS

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Electrical characteristics

ST72321xx-Auto

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Doc ID 13829 Rev 1

19.2

Absolute maximum ratings

Stresses above those listed as “absolute maximum ratings” may cause permanent damage

to the device. This is a stress rating only and functional operation of the device under these

conditions is not implied. Exposure to maximum rating conditions for extended periods may

affect device reliability.

19.2.1

Voltage characteristics

Table 104.

Voltage characteristics

Symbol

Ratings

Maximum value

Unit

VDD - VSS

Supply voltage

6.5

VPP - VSS

Programming voltage

VIN

(1)

Input voltage on true open-drain pin

VSS - 0.3 to 6.5

Input voltage on any other pin

VSS - 0.3 to VDD +0.3

V

DDx| and |VSSx|

Variations between different digital power pins

|VSSA - VSSx|

Variations between digital and analog ground pins

VESD(HBM)

Electrostatic discharge voltage (Human Body Model)

See Section 19.7.3 on page 202.

VESD(MM)

Electrostatic discharge voltage (Machine Model)

Directly connecting the RESET and I/O pins to VDD or VSS could damage the device if an unintentional internal reset is

generated or an unexpected change of the I/O configuration occurs (for example, due to a corrupted program counter). To

guarantee safe operation, this connection has to be done through a pull-up or pull-down resistor (typical: 4.7k

 for RESET,

10k

 for I/Os). For the same reason, unused I/O pins must not be directly tied to V

DD or VSS.

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