Cost-Effective Automotive Haptic Touch Key Module for Enhanced Driver Safety

As vehicle interiors become more technologically advanced, there is a growing trend toward adopting capacitive touch buttons and interfaces. To ensure driver safety, these interfaces require haptic feedback, allowing drivers to confirm their actions without taking their eyes off the road. This cost-effective automotive touch key module integrates haptic feedback into any control switch, enhancing user experience and promoting vehicle safety.

System Benefits:

• An entry-level MCU manages touch sensing and haptic drivers while supporting high-speed CAN FD communication and EVITA-Light in-vehicle security for comprehensive system control at minimal cost.
• Versatile haptic driver input triggers from GPIO pins allow different signal patterns to be assigned to multiple touch keys.
• Features low idle current consumption (0.36µA) with minimized vibration delay (0.75ms).
• A comprehensive demo board works with the touch sensitivity tuning tool, the low-power high-definition haptic driver evaluation kit, and a haptic sequence design tool with available software for the interoperation of both boards.