STE12PS datasheet(25/44 Pages) STMICROELECTRONICS

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STE12PS

Functional description

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3.9

Measurement and parameter codings

Table 7 below lists codifications for the various parameters such as detection conductance

or resistances, classification or monitoring currents, port voltages, port powers and power

budgets.

Table 7.

Measurement and parameter codings

Parameter

Description

Range

Step

Units

Number of steps

Idet

Detection current

0 to 1023

µA

1024

Gdet, Gdl, Gdh

Detection conductances

0 to 256

0.250

µS

1024

Rdet, Rdl, Rdh(1)

Detection residences

8 to 48.96

0.01

Ω

4096

Iclass

Current classification

0 to 70

0.065064

1024

Imon

Channel current during

powering

0 to 1024

0.0312662

32768

Vport

Battery voltage

0 to 70

0.27451

256

Pmeas

Channel power usage

0 to 35000

35.149

1024

Rdet, Rdl and Rdh are the alternative to Gdet, Gdl and Gdh which are the default. If Rdet measures more than 500 kohms,

the “open-circuit” flag is raised, that is set HIGH.

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