ST7LUS5 datasheet(92/124 Pages) STMICROELECTRONICS

92 / 124 page

Electrical characteristics

ST7LUS5, ST7LU05, ST7LU09

92/124

12.3

Operating conditions

Table 62.

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 any standard I/O and control pin

Output current sunk by any high sink I/O pin

Output current source by any I/Os and control pin

-25

IINJ(PIN)

(2)(3)

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>VDD while a negative injection is induced by VIN <VSS.

Negative injection disturbs the analog performance of the device. In particular, it induces leakage currents

throughout the device including the analog inputs. To avoid undesirable effects on the analog functions,

care must be taken:

- Analog input pins must have a negative injection less than 0.8 mA (assuming that the impedance of the

analog voltage is lower than the specified limits)

- Pure digital pins must have a negative injection less than 1.6mA. In addition, it is recommended to inject

the current as far as possible from the analog input pins.

Injected current on RESET pin

±5

Injected current on any other pin(4)

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

characterisation with

ΣI

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

±5

ΣI

INJ(PIN)

(2)

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

±20

Table 63.

Thermal characteristics

Symbol

Ratings

Value

Unit

TSTG

Storage temperature range

-65 to +150

°C

Maximum junction temperature (see Chapter 13: Package characteristics)

Table 64.

General operating conditions

Symbol

Parameter

Conditions

Min

Max

Unit

VDD

Supply voltage

fOSC = 16 MHz max,

TA = -40°C to TA max

3.0

5.5

fCLKIN

External clock frequency on

CLKIN pin

VDD > 3V

MHz

Ambient temperature range

A Suffix version

-40

+85

°C

C Suffix version

+125

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