Note: This is a summary document.

A complete document is available

under NDA. For more information

contact www.atmel.com/touchscreen.

Features

– True 12-bit multi-touch with independent XY tracking for up to 10 concurrent

touches in real time with touch size reporting

– Up to 4.3 inch diagonal screen size supported with 10 mm “pinch” separation

– Up to 10.1 inch support with correspondingly wider “pinch”

– Up to 224 (subject to other configuration limitations)

– Electrode grid configurations up to 20 X by 10 Y lines supported (subject to 30

total pins and a maximum of 14 Y lines)

– Up to 32 channels can be allocated as fixed keys (subject to other configurations)

– 16 X by 14 Y matrix (224 channels) implementable with power bypass capacitors only

– Advanced digital filtering using both hardware engine and firmware

– Self-calibration

– Auto drift compensation

– Grip and face suppression

– Reports one-touch and two-touch gestures

– Down-scaling and clipping support to match LCD resolution

– Ultra-fast start-up and calibration for best user experience

– Supports axis flipping and axis switch-over for portrait and landscape modes

– Maximum single touch >250Hz, subject to configuration

– Configurable to allow power/speed optimization

– Programmable timeout for automatic transition from active to idle states

– Initial latency <10 ms for first touch from idle, subject to configuration

– Works with PET or glass sensors

– Works with passive stylus

– Glass up to 3 mm, screen size dependent

– Plastic up to 1.5 mm, screen size dependent

– Interface 1.8V to 3.3V nominal, analog 2.7V to 3.3V nominal

– Idle 80Hz: <1.8 mW, subject to configuration

– One Touch Active 80Hz: 3.9 mW, subject to configuration

– Sleep: 4.5 µW

– 49-ball UFBGA 5 x 5 x 0.6 mm, 0.65 ball pitch

– 49-ball VFBGA 5 x 5 x 1 mm, 0.65 ball pitch

– 48-pin QFN 6 x 6 x 0.6 mm, 0.4 mm pin pitch

224-channel

Touchscreen

Sensor IC

mXT224

Summary

9530BS–AT42–10/09