Refer AT32UC3L datasheet Table 28-2 Pin Selection Guide and Table 3-1 GPIO Controller Function multiplexing, for mapping between the QTouch method pin name (SNS/SNSK) and the GPIO pin. The CAT module provides an option to enable a nominal output resistance of 1 kΩ on specific CAT module pins during the burst phase. The Table below captures the different QTouch method pin wherein a Resistive Drive can be optionally enabled. The rows marked with 'N' in the last column indicate that Resistive Drive option is not available on that pin. By carefully choosing the QTouch method SNSK pins wherein Resistive Drive can be enabled, saving on external components is possible. QTouch method sensor provides detail on the number of Pin and Touch channels required for different QTouch method sensor. Also, Library Configuration parameters for UC3L indicates the various Pin Configuration options for the QTouch Library that can be used to specify a user defined configuration.
|
CAT Module Pin Name |
QTouch method Pin Name |
Resistive Drive option Availability(Y-Yes, N-No) |
|---|---|---|
|
CSA0 |
SNS0 |
N |
|
CSB0 |
SNSK0 |
N |
|
CSA1 |
SNS1 |
Y |
|
CSB1 |
SNSK1 |
N |
|
CSA2 |
SNS2 |
Y |
|
CSB2 |
SNSK2 |
Y |
|
CSA3 |
SNS3 |
Y |
|
CSB3 |
SNSK3 |
Y |
|
CSA4 |
SNS4 |
N |
|
CSB4 |
SNSK4 |
N |
|
CSA5 |
SNS5 |
Y |
|
CSB5 |
SNSK5 |
Y |
|
CSA6 |
SNS6 |
Y |
|
CSB6 |
SNSK6 |
Y |
|
CSA7 |
SNS7 |
Y |
|
CSB7 |
SNSK7 |
Y |
|
CSA8 |
SNS8 |
N |
|
CSB8 |
SNSK8 |
N |
|
CSA9 |
SNS9 |
Y |
|
CSB9 |
SNSK9 |
Y |
|
CSA10 |
SNS10 |
Y |
|
CSB10 |
SNSK10 |
Y |
|
CSA11 |
SNS11 |
Y |
|
CSB11 |
SNSK11 |
Y |
|
CSA12 |
SNS12 |
N |
|
CSB12 |
SNSK12 |
Y |
|
CSA13 |
SNS13 |
Y |
|
CSB13 |
SNSK13 |
Y |
|
CSA14 |
SNS14 |
N |
|
CSB14 |
SNSK14 |
N |
|
CSA15 |
SNS15 |
Y |
|
CSB15 |
SNSK15 |
Y |
|
CSA16 |
SNS16 |
Y |
|
CSB16 |
SNSK16 |
N |
(The rows marked with 'N' in the last column indicate that Resistive Drive option is not available on that pin.)