How is 'operand' term applied here?

T Chap

I am trying to write the setups for a QT60160 touch sense IC with I2C from the Propeller. The info from the datasheet says:

info said...

Lower nibble = Neg Threshold - take operand and add 4 to get value

info said...


Typical values: 3 to 8
(7 to 12 counts of threshold; 4 is internally added to
NTHR to generate the threshold).
Default value: 6
(10 counts of threshold)

If trying to write the default value of 6, are they suggesting use the number 2 for my write, and it will internally add 4 to the 2 to arrive at your desired value? I don't get why they used this convention.

Thanks

Mikerocontroller

· The data sheet shows that you are addressing a look-up table (table 6.2).· You supply the proper index number nibble and it will look up the desired key count.· You can see that NTHR key counts range from 4-19.· You only have 0-15 to work with so the lookup table is offset by four.· If you want·6 key counts then use·2 for your index.· I beleive you just missed the handy table diagram!


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T Chap

Probably comes from staring at a data sheet too many hours trying to solve a problem! Thanks for the helping hand.