QST104 datasheet(31/45 Pages) STMICROELECTRONICS

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QST104

Electrical characteristics

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6.3

Operating conditions

Table 22.

Current characteristics

Symbol

Ratings

Maximum value

Unit

IVDD

Total current into VDD power lines (source)

(1)

All power (VDD) and ground (VSS) lines must always be connected to the external supply.

IVSS

Total current out of VSS ground lines (sink)

(1)

150

IIO

Output current sunk by RESET pin

Output current sunk by output pin

Output current source by output pin

− 25

IINJ(PIN)

(2)

(3)

IINJ(PIN) must never be exceeded. This is implicitly ensured if VIN maximum is respected. If VIN maximum

cannot be respected, the injection current must be limited externally to the IINJ(PIN) value. A positive

injection is induced by VIN>VDD while a negative injection is induced by VIN<VSS. For true open-drain

pads, there is no positive injection current, and the corresponding VIN maximum must always be

respected.

When several inputs are submitted to a current injection, the maximum

ΣIINJ(PIN) is the absolute sum of the

positive and negative injected currents (instantaneous values). These results are based on

characterisation with

ΣIINJ(PIN) maximum current injection on four I/O port pins of the device.

Injected current on RESET pin

± 5

Injected current output pin

± 5

ΣIINJ(PIN)(2) Total injected current (sum of all I/O and control pins)

± 20

Table 23.

Operating conditions

Symbol

Feature

Value

Unit

VDD

Operating supply voltage

2.4 to 5.5

Operating temperature

-40° to +85°

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