QT60168C-ASG Atmel, QT60168C-ASG Datasheet - Page 60

• Manufacturer Part Number: QT60168C-ASG
• Description: IC TOUCH SENSOR 16KEY 32TQFP
• Manufacturer: Atmel
• Series: QMatrix™, QProx™r
• Type: Capacitiver

Specifications of QT60168C-ASG

• Number Of Inputs/keys: 16 Key
• Resolution (bits): 9, 11 b
• Data Interface: Serial, SPI™
• Voltage - Supply: 3 V ~ 5 V
• Current - Supply: 25mA
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFP, 32-VQFP
• Output Type: *
• Interface: *
• Input Type: *
• For Use With: 427-1087 - BOARD EVAL QT60248-AS QMATRIX
• 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