STRT71XF datasheet(34/74 Pages) STMICROELECTRONICS

34 / 74 page

Electrical parameters

STR71xF

34/74

Notes:

IINJ(PIN) must never be exceeded. This is implicitly insured 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>V33 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

All 3.3V power (V33, AVDD, V33IO-PLL) and ground (VSS, AVSS, VSSIO-PLL) pins must always be connected

to the external 3.3V supply.

Negative injection disturbs the analog performance of the device. See note in Section 2.3.9: ADC

characteristics on page 62.

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

ΣI

INJ(PIN) is the absolute sum of the

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

characterization with

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

Only when using external 1.8V power supply. All the power (V18, V18BKP) and ground (VSS18, VSSBKP) pins

must always be connected to the external 1.8V supply.

Table 10.

Current characteristics

Symbol

Ratings

Max.

Unit

IV33

Total current into V33/V33IO-PLL power lines (source)

150

IVSS

Total current out of VSS/VSSIO-PLL ground lines (sink)

150

IIO

Output current sunk by any I/O and control pin

Output current source by any I/Os and control pin

- 25

IINJ(PIN)

1) & 3)

Injected current on RSTIN pin

± 5

Injected current on CK pin

± 5

Injected current on any other pin 4)

± 5

ΣIINJ(PIN) 1)

Total injected current (sum of all I/O and control pins) 4)

± 25

Table 11.

Thermal characteristics

Symbol

Ratings

Value

Unit

TSTG

Storage temperature range

-65 to +150

°C

Maximum junction temperature (see Section 3.2: Thermal characteristics on

page 69)

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