MICROCHIP CAP1126-1-AP-TR

The CAP1126, which incorporates RightTouch technology, is a multiple channel Capacitive Touch sensor with multiple power LED drivers. It contains six (6) individual capacitive touch sensor inputs with programmable sensitivity for use in touch sensor applications. Each sensor input automatically recalibrates to compensate for gradual environmental changes. The CAP1126 also contains two (2) LED drivers that offer full-on / off, variable rate blinking, dimness controls, and breathing. Each of the LED drivers may be linked to one of the sensor inputs to be actuated when a touch is detected. As well, each LED driver may be individually controlled via a host controller. The CAP1126 includes Multiple Pattern Touch recognition that allows the user to select a specific set of buttons to be touched simultaneously. If this pattern is detected, then a status bit is set and an interrupt generated. Additionally, the CAP1126 includes circuitry and support for enhanced sensor proximity detection. The CAP1126 offers multiple power states operating at low quiescent currents. In the Standby state of operation, one or more capacitive touch sensor inputs are active and all LEDs may be used. If a touch is detected, it will wake the system using the WAKE/SPI_MOSI pin. Deep Sleep is the lowest power state available, drawing 5uA (typical) of current. In this state, no sensor inputs are active. Driving the WAKE/SPI_MOSI pin or communications will wake the device.

• Six (6) Capacitive Touch Sensor Inputs - Programmable sensitivity - Automatic recalibration - Individual thresholds for each button
• Proximity Detection
• Multiple Button Pattern Detection
• Calibrates for Parasitic Capacitance
• Analog Filtering for System Noise Sources
• Press and Hold feature for Volume-like Applications
• Multiple Communication Interfaces - SMBus / I²C compliant interface - SPI communications - Pin selectable communications protocol and multiple slave addresses (SMBus / I²C only)
• Low Power Operation - 5uA quiescent current in Deep Sleep - 50uA quiescent current in Standby (1 sensor input monitored) - Samples one or more channels in Standby
• Two (2) LED Driver Outputs - Open Drain or Push-Pull - Programmable blink, breathe, and dimness controls - Can be linked to Capacitive Touch Sensor inputs
• Dedicated Wake output flags touches in low power state
• System RESET pin
• Available in 16-pin 4mm x 4mm RoHS compliant QFN package

• Desktop and Notebook PCs
• LCD Monitors
• Consumer Electronics
• Appliances