ATMXT641TD-ATR081 Datasheet PDF - Microchip Technology

Description
The mXT641TD-AT/mXT641TD-AB uses a unique charge-transfer acquisition engine to implement Microchip’s patented capacitive sensing method. Coupled with a state-of-the-art CPU, the entire touchscreen sensing solution can measure, classify and track a number of individual finger touches with a high degree of accuracy in the shortest response time. The mXT641TD-AT/ mXT641TD-AB allows for both mutual and self capacitance measurements, with the self capacitance measurements being used to augment the mutual capacitance measurements to produce reliable touch information. 

maXTouch® Adaptive Sensing Touchscreen
Technology
• Up to 32 X (transmit) lines and 20 Y (receive) lines
• A maximum of 640 nodes can be allocated to the
   touchscreen
• Touchscreen size 8.17 inches (16:10 aspect ratio),
   assuming a sensor electrode pitch of 5.5 mm. Other
   sizes may be possible with different electrode pitches
   and appropriate sensor material
• Multiple touch support with up to 16 concurrent
   touches tracked in real time

Automotive Applications
• AEC-Q100 Qualified
• Developed following Automotive SPICE® Level 3
certified processes
• CISPR-25 compliant (for both mutual and self
capacitance measurements)

Touch Sensor Technology
• Discrete/out-cell support including glass and PET 
   film-based sensors
• On-cell/touch-on display support including TFT, IPS
   and OLED
• Synchronization with display refresh timing capability
• Support for standard (for example, Diamond) and
   proprietary sensor patterns (review of designs by
   Microchip recommended)

Front Panel Material
• Works with PET or glass, including curved profiles
   (configuration and stack-up to be approved by
   Microchip)
• Glass 0.4 mm to 8 mm (dependent on screen size,
   touch size, configuration and stack-up)
• Plastic 0.2mm to 4 mm (dependent on screen size,
   touch size, configuration and stack-up)
..etc