ATQT600 Atmel, ATQT600 Datasheet - Page 8
![KIT EVAL TOUCH FOR QT600](/photos/9/18/91802/qt600_sml.jpg)
ATQT600
Manufacturer Part Number
ATQT600
Description
KIT EVAL TOUCH FOR QT600
Manufacturer
Atmel
Series
QTouch™r
Specifications of ATQT600
Sensor Type
Touch Screen
Interface
USB
Embedded
Yes, Other
Utilized Ic / Part
ATtiny88, ATmega324PA, ATxmega128A1
Processor To Be Evaluated
ATtiny88, ATmega324, ATxmega128
Data Bus Width
8 bit, 16 bit
Interface Type
USB
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
1.6 V to 3.6 V
Silicon Manufacturer
Atmel
Kit Application Type
Sensor
Application Sub Type
Touch Sensor
Kit Contents
USB Bridge, MCU Cards, Touchpad Cards
Svhc
No SVHC (15-Dec-2010)
Mcu Supported Families
ATtiny88,
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Supply
-
Sensitivity
-
Sensing Range
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATQT600
Manufacturer:
Atmel
Quantity:
135
10620D–AT42–04/09
Introduction To Sensor Design
1.3
1.4
1-2
Dimension Groups
Some Important Theory
In addition to the self- and mutual-capacitance types described in
into three groups, depending on the number of dimensions they use (see
When considering the design of a sensor, you will need to consider both the sensor type and the
dimension group, making six possible combinations in total. The combinations for zero-dimensional and
one-dimensional sensors are discussed individually in
are not covered by this guide. For information on designing two-dimensional sensors, please contact
Atmel’s Touch Technology Division.
Figure 1-1.
You will need to be aware of the following terms when reading this document:
Zero Dimensional Sensors
Single point of contact
Key
Zero-dimensional sensors
A zero-dimensional sensor is one that represents a single point of contact. The typical implementation
of a zero-dimensional sensor is a key.
One-dimensional sensors
A one-dimensional sensor is one that detects the linear movement of a finger during touch (that is,
along a single axis). Typical implementations of one-dimensional sensors are sliders and wheels.
Two-dimensional sensors
A two-dimensional sensor is one that detects the movement of a finger during touch along two axes.
Typical implementations of two-dimensional sensors are touchscreens and touchpads.
Cx: The electrode’s natural capacitance, separate from any parasitic capacitance
T: The thickness of the overlying panel in meters (see
A: The area of the touched region in square meters (see
Cp: Any parasitic capacitance added in parallel with Cx
SNR: Signal to noise ratio: a measure of the quality of the capacitive measurement
r
0
: The relative dielectric constant of the overlying panel material (see
: The capacitance per meter of free space, defined as 8.85 x 10
Sensor Dimensions
One Dimensional Sensors
Movement in one direction
Slider
Wheel
Section 3
Figure
Figure
1-2)
Two Dimensional Sensors
Movement in two directions
to
Touchscreen/
Touchpad
Section
1-2)
Section
-12
F/m
Figure 1-2 on page
Figure
1.2, sensors can also be split
Touch Sensors Design Guide
6; two-dimensional sensors
1-1):
1-3)