Capacitive touch technology are often suffering from false triggers in the presence of water droplets, wet hands, or high-humidity environments.

Utilizing intelligent algorithms and high-sensitivity capacitive sensing technology, Nuvoton’s solution maintains stable and precise touch performance even with water residue on the surface, significantly enhancing the user experience.

• Feature
  

  -	Water-Resistant Touch Technology
  	- Effectively suppresses false triggers caused by water droplets and moisture, significantly improving touch reliability.
  -	Wet-Hand Operation Support
  	- Ensures a stable and fluid touch experience even when operating with wet fingers.
  -	Smart Anti-Interference Algorithm
  	- Built-in IIR filtering, debounce, and baseline tracking algorithms to effectively enhance noise immunity and touch sensitivity.
  -	Parameter Migration
  	- Within the same hardware design environment, Touch Key parameters can be replicated directly to the target PCB, drastically shortening tuning and mass-production deployment time.
  	- It enables swift integration into MCU applications to accelerate product development.
  -	Touch Key Calibration Tool
  	- Provides a graphical calibration software that helps users quickly complete touch parameter configuration, calibration, and performance optimization.

• Specifications

  M258 (32-bit Arm® Cortex®-M23)
  -	Operating Frequency: 48 MHz
  -	Operating Voltage: 1.75 V to 5.5 V
  -	Touch key Controller
  	-IEC 61000-4-6 10 Vrms
  	-2 mm waterproof
  	-High touch sensitivity and high-noise immunity

• System Block Diagram