Altium NEXUS Documentation

Microchip Touch Controls

Modified by Tiffany Cullen on Sep 17, 2019
此文档页面引用了不再受支持的产品 Altium Vault, Altium Vault 及其组件管理功能已迁移到 Altium Concord Pro
All Contents

Parent page: Designing with Touch Controls

Facilitating the use of touch sensor technologies in your board designs, Altium NEXUS provides support for creating planar capacitive sensor patterns on your PCB, for use with the range of Microchip® mTouch® controllers.

Supported Sensors

The following self-capacitance sensor types are available for use in your PCB designs:

Slider sensors are one-dimensional sensors – they detect movement of your finger along a single axis.

Each channel (electrode) of these sensors has a single, direct connection to the sensor controller. Such sensors are non-directional, in terms of their emitted electric fields. Although they can be used with or without an overlying panel, electrostatic discharge (ESD) implications – for the associated controller device – is a major influence for such a panel being used.

All of these sensors are suited for use with Microchip mTouch controllers.

Installing Microchip mTouch Touch Sensor Support

If support has not already been added during initial installation of the software, it can be added from the Configure Platform page, when managing the extensions and updates for your installation (click the  button, at the top-right of the main application window, then choose the Extensions and Updates entry from the associated menu):

  1. From the Installed page of the view, simply click the Configure button at the top-right - to access the Configure Platform page.

First access the Configure Platform page of the Extensions & Updates view.

  1. Scroll to the bottom of the page and enable the entry for Microchip mTouch, in the Touch Sensor Support region of the page.

Then enable the Microchip mTouch option, under Touch Sensor Support.

  1. Click the Apply button, back at the top-right of the page. Altium NEXUS must be restarted for the changes to take effect, so click Yes at the dialog prompt. The required files will be downloaded and installed, and Altium NEXUS restarted. Verify through Windows Explorer that the Microchip mTouch.IntLib is now available - in the \Users\Public\Documents\Altium\AD<VersionNumber>\Library\Microchip folder (for a default installation).

After the installation is updated, the Microchip mTouch integrated library will be available.

Sensor Implementation

A touch sensor is implemented in a design by placing and configuring the required sensor type from the dedicated Microchip mTouch integrated library (Microchip mTouch.IntLib).

The mTouch folder, and associated integrated library, will be present in the \Users\Public\Documents\Altium\AD<VersionNumber>\Library folder (for a default installation of Altium NEXUS), provided Microchip mTouch touch sensor support is installed as part of your Altium NEXUS installation, as detailed in the previous section.

When configured as required, simply update the target PCB – an ECO is used to effect the required changes, resulting in the creation of the sensor pattern for placement on the PCB. Each sensor component on the PCB isn't a footprint in the normal sense, but rather the actual copper electrode pattern. An overlaying panel would be placed over a sensor when the board is assembled.

Implementing a touch control is a snap - just place the required sensor type component on the schematic, configure it as applicable to your
design needs, then push the changes over to the PCB to obtain the sensor pattern.

A sensor pattern can also be modified on the PCB side, and the changes pushed back to the relevant schematic sheet through an ECO.

The following sections take a closer look at the configurable sensor components available for placement in a design, their configuration options, and the resulting sensor pattern obtained on the PCB side. In each case, the default configurations are presented.

As with all configurable schematic components in Altium NEXUS, access to the associated configuration dialog (mTouch Component dialog) for a sensor component is made by right-clicking over the component and choosing Configure from the context menu.

mTouchChevronSlider

Use the mTouchChevronSlider component to implement an n-channel chevron slider, for connection directly to a Microchip mTouch sensor controller. The resulting sensor pattern on the PCB is comprised of a 1xn array of chevron-shaped electrodes, where n is the number of devices specified. In essence, you are specifying n separate sensors placed physically adjacent to each other. You have global control over the height and width of the constituent sensors, as well as control over the chevron angle. You can also control the gap between neighboring sensors.

Default configuration and resulting sensor pattern for the mTouchChevronSlider component

mTouchLinearSlider

Use the mTouchLinearSlider component to implement a simple 2-channel linear slider, for connection directly to a Microchip mTouch sensor controller. The resulting sensor pattern on the PCB is comprised of two electrodes. In essence, these are two separate sensors placed physically adjacent to each other. Electrode shape is formed by a defined square and triangle. The electrodes are arrange such that their triangular parts almost interlock, separated by a defined gap. This design of slider gives the most linear output as a user's finger passes from one sensor across to the other.

Default configuration and resulting sensor pattern for the mTouchLinearSlider component

mTouchMutualRingSensor

Use the mTouchMutualRingSensor component to implement a simple 2-channel mutual ring sensor, for connection directly to a Microchip mTouch sensor controller. The resulting sensor pattern on the PCB is comprised of two electrodes, in concentric fashion, with a definable gap between the two. Simply define the radius for the inner pad, and a 'thickness' for the outer pad.

Default configuration and resulting sensor pattern for the mTouchMutualRingSensor component

Microchip Sensor Controllers

Microchip's mTouch Controllers – to which the corresponding electrodes from the sensor patterns connect – are typically PIC devices. These controllers can be found on the relevant Microchip pages within the Unified Components section of the Design Content area of the Altium Website.

Browse mTouch Controller components on the Altium Website.

Components can be browsed directly on these pages. In addition, each page offers the following two options:

  • Go To Vault - click this button to browse the components through the browser-based interface to the Altium Content Vault in which the components reside.
  • Download Library - click this button to download the components in a zipped integrated library file.

Alternatively, connect to the Altium Content Vault through Altium NEXUS and place components directly into your designs.

The option to automatically connect to the Altium Content Vault is enabled by default. But if you have disabled this, connection can be performed from the Data Management - Servers page of the Preferences dialog. Provided you have a licensed instance of Altium NEXUS and valid Altium Subscription, a connection to the vault will be made instantly. This direct connection enables you to access and place content from the Altium Content Vault directly into your designs, through the Explorer panel.

The mTouch Controllers can be found in the relevant sub-folders within the Unified Components\Components\Microchip area of the vault.

Access the range of mTouch Controllers in the Altium Content Vault, available for placement in your designs through the Explorer panel.

Further Information

PIC devices offering mTouch sensing solutions can be found on the Microchip website here.

Found an issue with this document? Highlight the area, then use Ctrl+Enter to report it.

联系我们

联系原厂或当地办公室

You are reporting an issue with the following selected text
and/or image within the active document:
Altium Designer 免费试用
Altium Designer Free Trial
我们开始吧!首先,您或者您的公司已经在使用Altium Designer了吗?

如果您有任何需求,请点击这里联系获取当地办公室销售代表联系方式。.
Copyright © 2019 Altium Limited

既然您在使用Altium Designer,为何仍需要试用?

如果您有任何需求,请点击这里联系获取当地办公室销售代表联系方式。.
Copyright © 2019 Altium Limited

好的,实际上您无需下载一个试用版本。

点击下方按钮下载最新版本的Altium Designer安装包

下载Altium Designer 安装包

如果您有任何需求,请点击这里联系获取当地办公室销售代表联系方式。.
Copyright © 2019 Altium Limited

填写下方表格,获取Altium Designer最新报价。

点击[获取免费试用],并同意我们的隐私政策。您会接收到来自Altium的资讯,并允许其改变您的通知首选项。

如果您是Altium维保期内客户,您不需要下载试用版本。

如果您不是Altium维保客户,请填写下方表格免费试用。

点击[获取免费试用],并同意我们的隐私政策。您会接收到来自Altium的资讯,并允许其改变您的通知首选项。

您为何想要试用Altium Designer?

如果您有任何需求,请点击这里联系获取当地办公室销售代表联系方式。.
Copyright © 2019 Altium Limited

那您来对地方了!请填写下方表格申请试用吧。

点击[获取免费试用],并同意我们的隐私政策。您会接收到来自Altium的资讯,并允许其改变您的通知首选项。

Great News!

Valid students can get their very own 6-month Altium Designer Student License for FREE! Just fill out the form below to request your Student License today.

点击[获取免费试用],并同意我们的隐私政策。您会接收到来自Altium的资讯,并允许其改变您的通知首选项。

好的,您可以下载免费的Altium Designer Viewer查看文档,有效期6个月。

请填写下方表格申请。

点击[获取免费试用],并同意我们的隐私政策。您会接收到来自Altium的资讯,并允许其改变您的通知首选项。

好棒!创作是一件超酷的事情,我们可以为您提供完美的设计软件。

Upverter是一个社区导向的交流平台,专为您这样的创客量身定做。

点击这里看看吧!

如果您有任何需求,请点击这里联系获取当地办公室销售代表联系方式。.
Copyright © 2019 Altium Limited

好的,您可以下载免费的Altium Designer Viewer查看文档,有效期6个月。

请填写下方表格申请。

点击[获取免费试用],并同意我们的隐私政策。您会接收到来自Altium的资讯,并允许其改变您的通知首选项。