深圳市中立信电子科技有限公司

ATMXT336T-CCUR

触摸屏控制器 MXT336UL - MXTouch 336U Touchscreensensor IC

Description ATMXT336T-CCUR

The mXT336U 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 mXT336U 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 14 X (transmit) lines and 24 Y (receive) lines

• A maximum of 336 nodes can be allocated to the touchscreen

• Touchscreen size 5.47 inches (16:9 aspect ratio), assuming a sensor electrode pitch of 5 mm. Other sizes may be possible with different electrode pitches and appropriate sensor material

• Multiple touch support with up to 10 concurrent touches tracked in real time

Power Saving

• Programmable timeout for automatic transition from active to idle states

• Pipelined analog sensing detection and digital processing to optimize system power efficiency

Application Interfaces ATMXT336T-CCUR

• I2C-compatible slave mode: Standard/Fast mode 400 kHz

• Interrupt to indicate when a message is available

• SPI Debug Interface to read the real-time raw data for tuning and debugging purposes

Power Supply ATMXT336T-CCUR

• Digital (Vdd) 3.3 V nominal

• Analog (AVdd) 3.3 V nominal

• Host interface I/O voltage (VddIO) 3.3 V nominal

• High voltage internal X line drive (XVdd) 6.6 V, with internal voltage pump

Package

• 56-pin XQFN 6 × 6 × 0.4 mm, 0.35 mm pitch

Environmental Conditions

• Operating temperature –40C to +85C