MCHPCAP1208-1-SL-TR
Overview
The CAP1208-1-SL-TR is an 8-channel capacitive touch sensor controller designed to interface with a host microcontroller via I2C or SMBus. It features advanced signal processing including automatic recalibration, parasitic capacitance compensation, and digital EMI filtering to ensure reliable touch detection in noisy environments. The device is capable of functioning in high-temperature industrial or automotive environments with an operating range of -40 deg C to 125 deg C.
Why Choose This Part
This controller offers extremely low power consumption, drawing as little as 5uA in deep sleep mode, making it ideal for battery-operated devices. It simplifies hardware design by automatically handling environmental calibration and providing 8kV ESD protection on all input pins. The inclusion of Multiple Button Pattern Detection allows for specific gesture-like triggers, such as a 'power button' press and hold.
Applications
Key Specifications
Getting Started
To evaluate this sensor, engineers can use the CAP1208 Evaluation Board (EVB-CAP1208) which connects to a PC via a USB-to-I2C bridge. Configuration is handled through the I2C interface by writing to internal registers that define sensitivity levels and recalibration rates. Microchip provides C-based driver libraries to facilitate rapid integration with PIC or SAM microcontrollers.
