AT42QT1070-SSU Microchip

Atmel AT42QT1070 Seven-channel QTouch Touch Sensor IC DATASHEET Features Configurations: Comms mode Standalone mode Number of Keys: Comms mode: 1 7 keys (or 1 6 keys plus a Guard Channel) Standalone mode: 1 4 keys plus a fixed Guard Channel on key 0 Number of I/O Lines: Standalone mode: 5 outputs Technology: Patented spread-spectrum charge-transfer Key Outline Sizes: 6 mm x 6 mm or larger (panel thickness dependent) widely different sizes and shapes possible Layers Required: One Electrode Materials: Etched copper Silver Carbon Indium Tin Oxide (ITO) Panel Materials: Plastic Glass Composites Painted surfaces (low particle density metallic paints possible Panel Thickness: Up to 10 mm glass Up to 5 mm plastic (electrode size dependent) Key Sensitivity: 2 Comms mode: individually settable via simple commands over I C-compatible interface Standalone mode: settings are fixed Interface: 2 I C-compatible slave mode (400 kHz). Discrete detection outputs Signal Processing: Self-calibration Auto drift compensation Noise filtering Adjacent Key Suppression (AKS ) up to three groups possible Power: 1.8 V 5.5 V Package: 14-pin SOIC RoHS compliant IC 20-pin VQFN RoHS compliant IC 9596CAT4205/20131. Pinouts and Schematics 1.1 Pinout Configuration Comms Mode (14-pin SOIC) VDD 1 14 VSS MODE (Vss) 2 13 KEY0 QT1070 SDA 3 12 KEY1 4 11 RESET KEY2 10 CHANGE 5 KEY3 SCL 6 9 KEY4 78 KEY6 KEY5 1.2 Pinout Configuration Standalone Mode (14-pin SOIC) 1 14 VSS VDD 2 13 MODE (Vdd) KEY0 QT1070 OUT0 3 12 KEY1 4 11 RESET KEY2 5 10 OUT4 KEY3 OUT3 6 9 KEY4 OUT2 78 OUT1 AT42QT1070 DATASHEET 2 9596CAT4205/2013