AT42QT1070_14 Datasheet, PDF (1/34 Pages) ATMEL Corporation – Seven-channel QTouch Touch Sensor IC

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:
 Comms mode: individually settable via simple commands over I²C-compatible
interface
 Standalone mode: settings are fixed
 Interface:
 I²C-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
9596C–AT42–05/2013