ATMXT768E-ABR

Overview

The ATMXT768E-ABR is a capacitive touchscreen controller from the maXTouch E Series, designed for tablet applications up to 12 inches. It features a 32-bit AVR core and supports electrode grids of up to 24 X and 32 Y lines (768 channels). The device provides 12-bit x 12-bit touch position reporting with a report rate of 150Hz. It operates on a supply voltage range of 1.8V to 3.3V and functions within a temperature range of -40°C to +105°C. The component utilizes an I2C interface and is housed in a VFBGA-96 package.

Feature Summary

• Supports seamless multi-touch performance for up to sixteen concurrent touches
• Includes advanced algorithms for narrow stylus identification and tracking
• Features sophisticated touch processing including grip and palm suppression
• Provides noise rejection capabilities for reliable operation near charger noise

Applications

• Tablets
• Mobile internet devices
• Netbooks
• Personal navigation devices

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm exact package type and environmental rating. Confirm current availability status as product lifecycles may change. Ensure compatibility with existing system interfaces before procurement.

Selection Notes

Select this controller for designs requiring single-chip solutions for displays up to 12 inches. Consider its low power consumption and support for thinner form factors like on-cell designs. Verify that the required channel count fits within the 768-channel limit.

Part Context

This component belongs to the Atmel maXTouch E Series family, which introduced enhanced noise avoidance and suppression capabilities. It represents a shift towards higher fidelity touch sensing and lower power consumption compared to previous generations.

Replacement Considerations

Check for updated versions within the maXTouch E Series or M1 series. Verify pinout and software compatibility if substituting with other controllers in the same family.