The Q Touch Sensor is a high sensitivity and high noise immunity touch input device. It is based on Atmel AT42QT1070. The AT42QT1070 modulates its bursts in a spread-spectrum fashion in order to heavily suppress the effects of external noise, and to suppress RF emissions. The QT1070 uses a dual-pulse method of acquisition. This provides greater noise immunity and eliminates the need for external sampling capacitors, allowing touch sensing using a single pin.



Specification Operating Voltage: 3~5.5V; Operating Current @3.3V: 1mA; Touch Keys: 7 Keys; key0 , key1 , key2 are on the Xadow PCB bottom side; Communicating Protocol: I2C; I2C Address: 0x1B.