It is well known that touch sensors with the advantage of high sensitivity are playing an increasingly important role in various display applications of household appliances. At present, most of the end products with touch display function are mainly composed of external master controller (MCU), touch button chip and display module. The TM6109 is a touch button control chip with high integration, which requires very few external components to achieve touch button detection. It has an embedded communication control module with the external display chip, and the external master controller (MCU) can control the external display chip through IIC communication, making it suitable for touch display and other solutions. In addition, its external display chip supports TM1628, TM1668, etc.