ATMXT2952TD

The ATMXT2952TD is a high-performance capacitive touch controller designed by Microchip Technology for advanced human-machine interface (HMI) applications. It features a 16-bit RISC processor and supports up to 300 simultaneous touch points, enabling precise multi-touch detection across large touch panels. The device operates at a supply voltage range of 2.7V to 3.6V, making it suitable for low-power portable systems while maintaining robust performance. This touch controller integrates an on-chip flash memory of 128 KB and 16 KB of SRAM, allowing for efficient firmware storage and real-time processing without external memory components. It includes built-in self-test (BIST) functionality and supports various communication interfaces such as I²C and SPI, ensuring flexible integration into diverse embedded systems. The ATMXT2952TD also offers noise immunity enhancements through adaptive filtering and automatic calibration, which ensures reliable operation in electrically noisy environments like industrial or automotive settings. Designed for use in consumer electronics, industrial control panels, and medical devices, the ATMXT2952TD supports both mutual capacitance and self-capacitance sensing modes. This dual-mode capability allows developers to optimize touch sensitivity and accuracy based on specific application requirements—such as glove-compatible touch or surface-mounted panel designs. Additionally, the chip provides hardware-accelerated gesture recognition, including swipe, pinch, and zoom, reducing CPU load and improving response time in interactive user interfaces. Power management features include dynamic power scaling and multiple sleep modes, which help minimize energy consumption during idle states. The device supports wake-on-touch functionality, enabling rapid system recovery from low-power states with minimal latency. With a compact QFN package (48 pins), it offers space-efficient integration into high-density PCB layouts. Overall, the ATMXT2952TD delivers a scalable, reliable, and energy-efficient solution for modern touch-enabled systems requiring high precision, multi-touch support, and robust environmental tolerance. Its comprehensive feature set makes it ideal for applications demanding responsive and intuitive user interaction in both consumer and industrial markets.