ATAVRQTOUCHX Atmel, ATAVRQTOUCHX Datasheet - Page 110

• Manufacturer Part Number: ATAVRQTOUCHX
• Description: BOARD EVAL CAPACITIVE TOUCH
• Manufacturer: Atmel
• Series: QTouch™r

Specifications of ATAVRQTOUCHX

• Sensor Type: Touch, Capacitive
• Sensing Range: 1 Slider, 1 Wheel, 2 Buttons
• Interface: USB
• Voltage - Supply: 5V, USB
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: AT90USB1287, ATxmega128A1
• Silicon Manufacturer: Atmel
• Silicon Family Name: ATxmega
• Kit Contents: Board
• Svhc: No SVHC (15-Dec-2010)
• Core Architecture: AVR
• Core Sub-architecture: AVR19
• Kit Features: One Slider, One Wheel And 2
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

For the case of Autonomous QTouch, only the TOUCH_STATE_NULL and TOUCH_STATE_INIT
states apply in the State diagram.
6.3.7
6.3.7.1
Please refer AT32UC3L datasheet Table 28-2 Pin Selection Guide and Table 3-1 GPIO
Controller Function multiplexing, for mapping between the QMatrix method pin name and the
GPIO pin. It is possible to configure a maximum of 17 X Lines and 8 Y-Yk pairs. The X Line X8
(PA16) cannot be used for the QMatrix method as it is required to use this pin for the ACREFN
function.
The CAT module provides an option to enable a nominal output resistance of 1kOhm on specific
CAT module pins during the burst phase. The Table below captures the different QMatrix method
pin wherein a Resistive Drive can be optionally enabled. The rows marked with Grey indicate
that Resistive Drive option is not available on that pin. By carefully choosing the QMatrix method
110
•
•
xx = qm, qt
Sensor state machine for QMatrix
and QTouch GroupA/B
The touch_at_sensor_init event causes a transition from TOUCH_STATE_NULL to
TOUCH_STATE_INIT.
The touch_deinit event causes a transition from TOUCH_STATE_INIT to
TOUCH_STATE_NULL.
QMatrix method sensor operation for UC3L
QMatrix method pin selection for UC3L
STATE_ NULL
TOUCH_
touch_xx_sensors_init
touch_deinit
Figure 36 State Diagram of QTouch Library for UC3L
touch_deinit
measure_complete_callback
(provide measured data and
touch status)
touch_xx_get_libinfo
touch_xx_sensor_config
touch_xx_sensor_get_config
touch_xx_get_global_param
touch_xx_get_libinfo
touch_deinit
STATE_BUSY
STATE_INIT
TOUCH_
TOUCH_
touch_xx_sensors_calibrate
touch_deinit
QTouch Library for UC3L State Diagram
touch_qm_channel_udpate_burstlen
touch_qt_sensor_disable
touch_qt_sensor_reenable
touch_xx_sensors_start_acquisition
TOUCH_
STATE_
READY
touch_xx_sensors_calibrate
CALIBRATE
8207J-AT42-02/11
TOUCH_
STATE_
touch_qm_channel_udpate_burstlen
touch_qt_sensor_disable
touch_qt_sensor_reenable
touch_xx_sensor_update_config
touch_xx_sensor_get_config
touch_xx_update_global_param
touch_xx_get_global_param
touch_xx_get_libinfo
touch_xx_sensor_update_config
touch_xx_sensor_get_config
touch_xx_update_global_param
touch_xx_get_global_param
touch_xx_get_sensor_delta
touch_xx_get_libinfo