ATQT600 Atmel, ATQT600 Datasheet - Page 60

• 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

10620D–AT42–04/09
Mutual-capacitance One-dimensional Sensors
6.3.4
6.3.4.1
6.3.4.2
6-6
Two-Layer Small Slider Or Wheel
Introduction
Slider
This sensor style uses a Flooded X design (see
10) and can operate with 3 or more channels. The basic layout rules listed in
do the layer separation rules.
When designing a slider, if the height of the X electrodes are 8 mm or less, then a single Y trace can be
used, as in
maximum separation to 4 mm (see
Figure 6-3.
Figure 6-4.
2–4 mm
2–4 mm
1.5–4 mm
Between Y
and Edge
of X
1.5–4 mm
Figure
Two-layer Small Slider: Single Y Trace (Spatially Interpolated)
Two-layer Small Slider: Multiple Y Traces (Spatially Interpolated)
6-3. However, as the slider gets taller, more Y “stripes” must be added to keep the
Gap Between X Electrodes
X -1
X n-1
n
0.1 0.5 mm
0.1 0.5 mm
–
–
Figure
X 2
X 2
n-
n-
6-4).
Y, 0.1 0.5 mm Width
Section 4.3.2 “Flooded-X Two-layer Method” on page 4-
Y, 0.1
Trace Width
–
–0.5
mm
Height = 2 x (1.5–4
mm) + (2 4 mm) x (Ystripes - 1)
6 8 mm
Touch Sensors Design Guide
6 8 mm
–
–
X0
Section 4.3.2
X0
–
3–8 mm
still apply, as