ATAVRQTOUCHX Atmel, ATAVRQTOUCHX Datasheet - Page 136
ATAVRQTOUCHX
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
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USE_PIN_PA22_AS_SMP
USE_PIN_PA17_AS_DIS
USE_PIN_PB11_AS_VDIV
USE_PIN_PA15_AS_SYNC
USE_PIN_PA18_AS_SYNC
USE_PIN_PA19_AS_SYNC
USE_PIN_PB08_AS_SYNC
USE_PIN_PB12_AS_SYNC
6.3.16 Data structures
This section lists the data structures that hold sensor status, settings, and diagnostics
information.
6.3.16.1 sensor_t
structure
Input / Output
Use
Fields
state
general_counter
ndil_counter
threshold
type_aks_pos_hyst
from_channel
to_channel
Index
6.3.16.2 touch_global_param_t
structure
Input / Output
Use
Fields
di
neg_drift_rate
pos_drift_rate
max_on_duration
drift_hold_time
pos_recal_delay
recal_threshold
Refer
136
Section 5.3
sensor_t
Output from the library
Data structure which holds the sensor state variables used by the library.
touch_global_param_t
Input to the Library
Holds the sensor acquisition parameters for a specific acquisition method
for Overview of Global configuration parameters.
Type
uint8_t
uint8_t
uint8_t
uint8_t
uint8_t
uint8_t
uint8_t
uint8_t
uint8_t
uint8_t
uint8_t
uint8_t
recal_threshold_t
Type
uint8_t
uint8_t
Use Pin PA22 as SMP for QMatrix
Use Pin PA17 as Discharge current control for QMatrix
Use Pin PB11 as Voltage divider enable (VDIVEN) for QMatrix
Use Pin PA15 as external synchronization input signal (SYNC)
Use Pin PA18 as external synchronization input signal (SYNC)
Use Pin PA19 as external synchronization input signal (SYNC)
Use Pin PB08 as external synchronization input signal (SYNC)
Use Pin PB12 as external synchronization input signal (SYNC)
Comment
internal sensor state
general purpose counter: used for calibration, drifting, etc
drift Integration counter
sensor detection threshold
holds information for sensor type, AKS group, positive
recalibration flag, and hysteresis value
Bit fields
B1 : B0
B2
B5:B3
B7:B6
starting channel number for sensor
ending channel number for sensor
index for array of rotor/slider values
Sensor Positive recalibration delay.
Sensor recalibration threshold.
Comment
Sensor detect integration (DI) limit.
Sensor negative drift rate in units of 200 ms.
Sensor positive drift rate in units of 200 ms.
Sensor maximum on duration in units of 200ms.
Sensor drift hold time in units of 200 ms.
Use
Hysteresis
positive recalibration flag
AKS group
sensor type
8207J-AT42-02/11
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