原标题：Microchip MTCH6303和MGC3030 3D手势控制方案

　　Microchip公司的MTCH6303是容性触摸控制器,提供多触点座标和多指手势,具有现代用户接口(UI)元件如捏拉缩放,多指显示滚动和滑动屏幕.27RX x 19TX通路,支持8"触摸屏,和MGC3130一起可支持多达20cm的3D手势,主要用在工业,医疗,家庭和办公自动化和消费类电子市场的触摸屏.本文介绍了MTCH6303主要特性,框图,MTCH6303和MTCH652应用电路,以及WOODSTAR开发板主要特性和组成,电路图和材料清单.

　　Microchip’s MTCH6303 is an innovative turnkey projected capacitive touch controller that provides multi-touch coordinatesas well as a readymade multi-finger surface gesture suite. MTCH6303 brings modern user interface (UI) elements – such aspinch and zoom, multi-finger scrolling, and swipes–to any embedded design, with minimal host requirements.

　　The MTCH6303’s advanced signal processing provides noise-avoidance techniques and predictive tracking for tenfingers, typically at 100 Hz each for five touches. It also combines with Microchip’s MTCH652 High-voltage Line Driverto achieve a superior signal-to-noise ratio (SNR) for outstanding touch performance in noisy environments. These capabilities are critical in demanding environments such as industrial controls,home and office automation with security control panels, thermostat, printers and lighting controls, and variousconsumer applications including exercise equipment and audio systems.

　　MTCH6303主要特性:

　　• Multi-Touch up to Ten Touches

　　• Five Touches Typically at 100 Hz+ Each

　　• 27RX x 19TX Channels Support Approximately 8"Touch Screens (larger possible)

　　• Combines with MTCH652 High-Voltage Driver forSuperior Signal-to-Noise Ratio (SNR)

　　• Integrated Single and Multi-finger GestureRecognition Suite including Taps, Swipes,Scrolling, Pinching and Zooming

　　• Advanced Processing Provides Noise AvoidanceTechniques

　　• USB and I2C Communication

　　• Supports 3D Gestures up to 20 cm whenCombined with the MGC3130 GestIC® Controller

　　MTCH6303应用:

　　• Touch screen designs and touch pads that requirecost effective, easy to integrate, fast time tomarket PCAP touch solutions

　　• Perfect for touch screens over displays, controlpanels, keypads and many other input devices

　　• Targeting the industrial, medical, home and officeautomation, and consumer markets

　　图1. MTCH6303框图

　　图2. MTCH6303和MTCH652应用电路

　　MGC3030/3130 3D跟踪和手势控制器

　　Microchip’s MGC3X30 are 3D gesture recognition andmotion tracking controller chips based on Microchip’spatented GestIC® technology. They enable usercommandinput with natural hand and fingermovements. Applying the principles of electrical nearfieldsensing, the MGC3X30 contain all the buildingblocks to develop robust 3D gesture input sensingsystems. Implemented as a low-power mixed-signalconfigurable controller, they provide a large set ofsmart functional features with integrated signal driver,a frequency adaptive input path for automatic noisesuppression and a digital signal processing unit.

　　Microchip’s on-chip Colibri Suite obsoletes processingneeds at the host, reduces system power consumptionresulting in low software development efforts for shorttime-to-market success. The MGC3XXX familyrepresents a unique solution that provides gestureinformation of the human hand in real time. Dedicatedchip family members add position data, touch or multitouch information to the free space gesture sensing.

　　The MGC3XXX allow the realization of a newgeneration of user interfaces across various industrymarkets.

　　图3.MGC3X30控制系统架构图

　　图4.MGC3X30控制器框图

　　图5.MGC3X30控制器参考电路图

　　MGC3X30控制器参考电路材料清单:

　　The Woodstar Development Kit is designed to support an easy integration ofMicrochip’s MGC3030 3D Gesture Controller into the customer’s applications. Itprovides MGC3030 system setup, related hardware and software references:

　　• Aurea Software Package with the Aurea Graphical User Interface and GestICLibrary

　　• MGC3030/3130 Software Development Kit (SDK)

　　• MGC3030/3130 PIC18 Host Reference code

　　With the help of these tools, the design-in process can be easily performed in fivesteps:

　　1. Feature Definition

　　2. Electrode Design

　　3. MGC3030 Parameterization

　　4. Host Application Programming

　　5. Verification

　　The Woodstar Development Kit package content is listed below:

　　• MGC3030 Module

　　• I2C to USB Bridge Module

　　• Reference Electrode (95x60 mm sensitive area)

　　• USB Cable for PC Connection

　　图6. WOODSTAR开发板外形图

　　图7.WOODSTAR开发板组成图

　　图7中的数字对应于:

　　I2C™ to USB Bridge

　　1. PIC18F14K50 USB microcontroller

　　2. USB micro-B connector

　　3. MCP1801T LDO voltage regulator (converts 5V USB to 3.3V board supply)

　　4. Status LEDs (power, communication status)

　　5. Data interface: 6-pin socket for data communication and power supply

　　MGC3030 Unit

　　6. MGC3030 3D Gesture Controller

　　7. Data interface: 6-pin header for data communication and power supply

　　8. Status LED (power)

　　9. Interface select

　　10. Electrode interface: 7-pin socket

　　11. Gesture Port Header

　　95x60 mm Reference Electrode PCB

　　12. Receive electrodes

　　13. Acrylic cover glass (120 x 85 x 2 mm)

　　14. Electrode interface: 7-pin header (mounted on backside)

　　WOODSTAR开发板主要特性:

　　• Recognition of 3D Hand Gestures and x, y, zPositional Data (MGC3130)

　　• Proximity and Touch Sensing

　　• Built-in Colibri Gesture Suite (running on chip)

　　• Advanced 3D Signal Processing Unit

　　• Detection Range: 0 to 10 cm

　　• Receiver Sensitivity: <1 fF

　　• Position Rate: 200 positions/sec

　　• Spatial Resolution: up to 150 dpi

　　• Carrier Frequency: 44 kHz to 115 kHz

　　• Channels Supported:

　　- Five receive (Rx) channels

　　- One transmit (Tx) channel

　　• On-chip Auto Calibration

　　• Low Noise Radiation due to Low Transmit Voltageand Slew Rate Control

　　• Noise Susceptibility Reduction:

　　- On-chip analog filtering

　　- On-chip digital filtering

　　- Automatic frequency hopping

　　• Enables the use of Low-Cost Electrode Materialincluding:

　　- Printed circuit board

　　- Conductive paint

　　- Conductive foil

　　- Laser Direct Structuring (LDS)

　　- Touch panel ITO structures

　　• Field Upgrade Capability

　　• Operating Voltage: 3.3V (+/-5%) (single supply)

　　• Temperature Range: -20℃ to +85℃

　　Peripheral Features

　　• 1x I2C™ Interface for Configuration and Sensoroutput streaming

　　• Five Gesture Port pins for individual mapping ofgesture to EIOs

　　Power Features

　　• Variety of Several Power Operation modesinclude:

　　- Processing mode: 20 mA @ 3.3V, typical

　　- Programmable Self Wake-up: 110 μA @ 3.3V

　　- Deep Sleep: 9 μA @ 3.3V, typical

　　WOODSTAR开发板应用:

　　• Audio Products

　　• Notebooks/Keyboards/PC Peripherals

　　• Home Automation

　　• White Goods

　　• Switches/Industrial Switches

　　• Medical Products

　　• Game Controllers

　　• Audio Control

　　I2C-USB桥材料清单:

　　MGC3030单元材料清单: