QT60168C-ASG Atmel, QT60168C-ASG Datasheet - Page 63

• 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

6.3.5.3
Touch Sensors Design Guide
Wheel
To form a wheel, the design is wrapped around to form a circle, the X segments becoming curved tooth
shapes (see
Figure 6-7.
Figure 6-7 on page
Two-layer Medium/Large Wheel (Spatially Interpolated)
X Electrodes x n
360°
n
6-9).
3
4
x
360°
n
4 mm
4 mm
4 mm
4 mm
2 mm
Mutual-capacitance One-dimensional Sensors
Arc center is coincident with the middle
of the bisecting line in center third segment
4 mm
4 mm
4 mm 2 mm
Y Rings
10620D–AT42–04/09
6-9