AT32UC3L064_1 ATMEL [ATMEL Corporation], AT32UC3L064_1 Datasheet - Page 668

• Manufacturer Part Number: AT32UC3L064_1
• Description: AVR32 32-bit Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

32099A–AVR32–06/09
Figure 28-2. CAT Touch Connections
Figure 28-3. CAT Matrix Connections
In order to use the autonomous QTouch detection capability, the user must first set up the
Autonomous Touch Pin Select Register (ATPINS) and Autonomous Touch Configuration Regis-
ters (ATCFG0 through 3) with appropriate values. The module can then be enabled using the
Control Register (CTRL). After the module is enabled, the module will acquire data from the
autonomous QTouch sensor and use it to determine whether the sensor is activated. The
active/inactive status of the autonomous QTouch sensor is reported in the Status Register (SR),
and it is also possible to configure the CAT to generate an interrupt whenever the status
changes. The module will continue acquiring autonomous QTouch sensor data and updating
autonomous QTouch status until the module is disabled or reset.
In order to use the QMatrix, QTouch group A, or QTouch group B acquisition capabilities, it is
first necessary to set up the appropriate pin mode registers (PINMODE0 and PINMODE1) and
AVR32 Chip
AVR32 Chip
SNSKn
SNSn
ACREFN
VDIVEN
SMP
YK0
YK1
DIS
X2
X3
X6
X7
Y0
Y1
Rdis
Cs1 (Sense Capacitor)
Rsmp1
Cs0 (Sense Capacitor)
Ra
Rb
Cs (Sense Capacitor)
NOTE: If the CAT internal
current sources will be enabled,
the SMP signal and Rsmp
resistors should NOT be included
in the design. If the CAT internal
current sources will NOT be
enabled, the DIS signal and Rdis
resistor should NOT be included
in the design.
QMatrix Sensor Array
Rsmp0
QTouch
Sensor
AT32UC3L
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