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  FT801 - Capacitive Touch Enabled Display, Audio and Touch Controller IC

The FT801 is a capacitive touch display controller which brings together the functionality and system benefits of Embedded Video Engine (EVE) technology together with the increased brightness, interactivity and vividness associated with capacitive touchscreen technology in order to create sophisticated and dynamic Human Machine Interfaces (HMIs).

This LCD controller is packaged in the same 48 pin QFN footprint as the FT800 and promotes architecture re-use for capacitive display needs, whilst providing the key elements seen in the FT800 including 3 in1 functionality (Display, Audio and Touch) and 1/16th pixel resolution, thus lowering BOM costs.


 Key Hardware Features
  • Single chip for Display, Audio and Touch control
  • Up to 512 x 512 pixel resolution
  • 262K colours (6 Red, 6 Green, 6 Blue)
  • Anti-Aliasing
  • 2-bit colour dither
  • Programmable HSYNC/VSYNC timing
  • Backlight control
  • Object oriented programming approach
  • Embedded widgets to assist with creating complex images
  • Mono audio output
  • 64 in-built polyphonic tones
  • Decode for mono 8-bit linear PCM, 4-bit ADPCM and μ-Law coding format at sampling frequencies from 8kHz to 48kHz
  • SPI/I2C interface to host MCU
  • 1.8V to 3.3V IO levels to host MCU
  • 3V3 levels on RGB pins
  • Extended operating temperature range : -40°C to 85°C
  • Available in QFN-48 package (RoHS compliant)
  • Capacitive touch control
  • Up to 5 touches and gesture detection
  • Hardware engine to recognise touch and track touch movement, which can provide notification for up to 255 touch tags
  • Enhanced sketch processing
  • Programmable interrupt controller providing interrupts to host MPU/MCU
  • Full functionality without the requirement of frame buffer RAM
  • Object oriented architecture, enabling use of low cost MPU/MCU as system host, using I2C (clocking up to 3.4MHz) and SPI (up to 30MHz) interfaces.
  • Support for both Mutual and Projected Capacitive Touch display controllers
Designing with the FT801
The FT801 can be easily interfaced to a capacitive touch controller via an I2C interface. The capacitive touch panel module (CTPM) asserts an interrupt when a touch is detected, signalling the FT801 to read the touch data via I2C. Additionally the FT801 supports a Compatibility touch mode, where existing FT800 application code can be run with single touch events detected, and Extended mode, which supports multi-touch sensing (up to 5 touchpoints) and gesturing.

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