Touch controller from STMicroelectronics supports AMOLED energy-saving displays
Summary
The controller is also ideal for smartphones with flexible AMOLED displays that integrate the touch-sensitive panel directly on the OLED emitter layer for an extremely thin profile. Based on an Arm Cortex-M4 core and integrating large flash memory, the FingerTip FTG2-SLP provides full flexibility to implement advanced touch features. In addition, proprietary hardware and firmware developed by ST and a special hibernation mode ensure extremely low power consumption that further contributes to maximising battery lifetime. The chip’s analog front end (AFE) leverages a differential architecture and multiple scanning methods to ensure faultless touch detection. The report rate of 480Hz captures every touch event even when operating at the display’s highest refresh speed.