Datasheet > MXT224

MXT224

更新时间： 2022-12-17 07:16:27

品牌	Logo	应用领域
爱特美尔 - ATMEL		传感器
页数	文件大小	规格书
12页	143K
描述
maXTouch 224-channel Touchscreen Sensor IC

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数据手册

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MXT224 数据手册

Features

• maXTouch^™Touchscreen

– 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”

• Number of Channels

– 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)

maXTouch^™

224-channel

Touchscreen

Sensor IC

• maXTouch Touch Key Support

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

• Zero Additional Part Count

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

• Signal Processing

– Advanced digital filtering using both hardware engine and firmware

– Self-calibration

– Auto drift compensation

– Adjacent Key Suppression^®(AKS^™) technology

– Grip and face suppression

mXT224

– 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

• Scan Speed

Summary

– Maximum single touch >250Hz, subject to configuration

– Configurable to allow power/speed optimization

– Programmable timeout for automatic transition from active to idle states

• Response Times

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

• Sensors

– Works with PET or glass sensors

– Works with all proprietary sensor patterns recommended by Atmel^®

– Works with passive stylus

• Panel Thickness

– Glass up to 3 mm, screen size dependent

– Plastic up to 1.5 mm, screen size dependent

• Interface

– I²C-compatible slave mode 400 kHz

• Dual-rail Power

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

• Power Consumption

Note: This is a summary document.

A complete document is available

under NDA. For more information

contact www.atmel.com/touchscreen.

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

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

– Sleep: 4.5 µW

• Package

– 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

9530BS–AT42–10/09

12 3 4 5 6 7...12

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