AT42QT4120

Features QField™ Touchscreen: – Up to 3.4 inches diagonal screen size supported Technology: – Patented spread-spectrum charge-transfer (transverse mode) Panel Materials: – Plastic, glass, composites, painted surfaces (low particle density metallic paints possible) Adjacent Metal: – Compatible with grounded metal immediately next to sensing channels Panel Thickness: – 1 to 2 mm glass, 0.5 to 1.5 mm plastic Interface: – I2C-compatible slave mode, 100 kHz or 400 kHz Moisture Tolerance: – Best in class Power: – 1.8V to 5.5V (2.5V to 5.5V in high speed mode) Packages: – 32-pin 5 x 5 mm MLF RoHS compliant Signal Processing: – Self-calibration, auto drift compensation, noise filtering Applications: – Mobile electronics, terminals, appliances Patents: – QMatrix™ (patented Charge-transfer method) – QField (patented Charge-transfer method, patent-pending QField optimized for one-layer sensor element designs) QField™ 10-bit Touchscreen Sensor IC AT42QT4120 Summary 1. Pin-out and Pin Listing Descriptions 1.1 Device Pin-out Y2B N/C SDA RST Y0A SCL Y1A Y2A 1 2 3 4 5 6 7 8 N/C CHANGE Vss Vdd Vss Vdd N/C N/C 32 31 30 29 28 27 26 25 24 23 AT42QT4120 22 21 20 Y1B Y0B A0 Vss Vdd Vdd Vdd N/C Note: This is a summary document. A complete document is available under NDA. For more information contact www.atmel.com/touchscreen. 19 18 17 9 10 11 12 13 14 15 16 Vss X1 X0 SMP VREF X2 N/C X3 9506AS–AT42–10/08 1.2 Pin Listing Description Pin Listing Name N/C CHANGE V...