Datasheet

9502A–AT42–07/08

AT42QT2160

7.6 Address 5: Slider Touch Position

Position: Last position of the touch on the slider

A change in this byte will cause the CHANGE

line to trigger.

7.7 Address 6: GPIO Read

GPIO1...3: If GPIO1...3 are set as inputs, returns the logic level on the respective pin. If a GPIO

is set as an output, the respective bit in GPIO Read will always report “0".

GPIOs set as inputs are only read once every cycle, i.e. every 16ms.

A change in this byte will cause the CHANGE

line to trigger.

7.8 Address 7: Sub-revision

This is an 8-bit sub-revision number that follows the code version (e.g. 4.0.0).

7.9 Address 10: Calibrate

Writing any nonzero value into this address will trigger the QT2160 to start a recalibration on all

enabled keys.

Table 7-6. Slider Touch Position

Addressb7b6b5b4b3b2b1b0

5Position

Table 7-7. GPIO Read

Addressb7b6b5b4b3b2b1b0

6 0 0 0 GPIO3 GPIO2 GPIO1 0 0

Table 7-8. Sub-revision

Addressb7b6b5b4b3b2b1b0

7 Sub-revision

Table 7-9. Calibrate

Addressb7b6b5b4b3b2b1b0

10 CALIBRATE