ST7LCR

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4.2

Recommended operating conditions

4.2.1

General operating conditions

4.2.2

Current injection

Positive injection

substrate of the die.

Negative injection

from the substrate of the die. The drawback is a small leakage of few µA induced inside the

die when a negative injection is performed. This leakage is tolerated by the digital structure.

The effect depends on the pin which is submitted to the injection. Of course, external digital

signals applied to the component must have a maximum impedance close to 50 k

Ω.

Pure digital pins can tolerate a negative current injection of 1.6 mA. In addition, the best

choice is to inject the current as far as possible from the analog input pins.

Note:

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

the sum of the positive (respectively negative) currents (instantaneous values).

Table 4.

Thermal characteristics

Symbol

Ratings

Value

Unit

Package thermal resistance VFQFPN24

42

°C/W

Max. junction temperature

150

°C

Storage temperature range

-65 to +150

°C

Power dissipation VFQFPN24

600

mW

Table 5.

General operating conditions

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supply voltage

4.0

5.5

V

External clock source

16

MHz

Ambient temperature range

0

70

°C