MILPITAS, Calif., Jan. 18, 2021 (GLOBE NEWSWIRE) -- Lumissil Microsystems, a division of ISSI, today introduced the IS31FL3748, a new class of LED driver designed for creating extremely bright and colorful LED-based signage board displays. The IS31FL3748 is targeted for applications such as indoor or outdoor LED digital sign boards, zonal backlighting of LCD TV displays and attention grabbing RGB color lights for gaming machines.

The IS31FL3748 is firstly a software configurable 24x4 LED matrix driver which designers can use to create LED array sizes of up to 96 individually addressable LED dots. Each LED can be driven by a 0~40mA current, set by an external resistor and scalable through software registers. In addition each LED dot can be replaced by a number of serially connected LEDs. The result is instead of one individually addressable LED driven at 40mA; it is now possible to drive up to 9 Red LEDs or 7 of the Blue, Green or White LEDs in place of a single LED dot. The combined light output of multiple LEDs can then be used in large signs visible in daytime or used in dynamic zonal backlighting of LCD TFT displays or integrated into bright animated RGB color lights.

Digitally Configurable The DPS Configuration Software features a simple, intuitive user interface that makes it easy to configure the driver & transmitter in the field. Users can select from a discrete list of factory pre-configured curves using drop-down boxes, or generate a custom linearization curve in the field by entering gap voltages at. The Matrix series of expandable fanless embedded computers are designed to enhance responsiveness and durability of edge AI and edge computing applications. Designed to perform and to last, the Matrix expandable fanless embedded computers offer performance, expandability, easy integration, and ruggedness to enable timely data-driven decision. Driver, designed to drive dot matrix graphic displays at multiplex rates of 1: 8, 1: 16, 1: 24 or 1: 32. The device has 40 outputs, of which 24 are programmable, configurable as 32⁄8, 24⁄16, 16⁄24 or 8⁄32 rows/columns. The PCF8578 can function as a stand-alone LCD controller/driver for use in small systems, or for larger.

LEDs used for outdoor signage must compete with the sun for visibility. Viewing digital signs in daylight requires that LEDs output more light than typically required indoors so as to compensate for bright sun conditions. Obtaining a bright LED light can be accomplished by increasing the LED current or by increasing the number of LEDs. The IS31FL3748 addresses both of these requirements by supporting a 40mA current per LED and providing the capability for stacking many LEDs. Furthermore, multiple IS31FL3748 devices can be interconnected with a serial bus to expand the total display area. IS31FL3748 has three serial bus options; HSB (high speed series bus, up to 10MHz), DSB (Manchester encoded, daisy chained serial bus, up to 2MHz) or SPI (12MHz) bus.

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“LED arrays are becoming the building blocks for interactive LED signage displays,” said Ven Shan, Vice President of Marketing. “With our latest IS31FL3748 LED matrix driver, sign developers and makers can create highly visible signs for advertising, information displays for transportation vehicles, transit terminals, sporting arenas and anywhere information needs to be displayed to the public. Other creative applications are for interactive LCD display backlighting and gaming machines found in casinos and pachinko parlors.”

The IS31FL3748 provides designers with increased system reliability and dynamic brightness control to enhance the visibility and long-term operation of large LED signboards. Power smoothing features such as LED group delay and system clock skewing minimize power supply stress and transient noise. Spread spectrum technology designed into the IS31FL3748 will further reduce EMI radiation. Additional analog and digital dimming capabilities such as 8-bit dot correction will help compensate for LED luminous mismatch and PWM control will adjust the display brightness.

Other reliability enhancement capabilities integrated into the IS31FL3748 are LED open or short detection and a thermal error flag. The device is designed to operate over a wide temperature range of -40°C to 125°C which is beyond the typical extended industrial temperature range.

Availability and pricing

The IS31FL3748 is available now in production quantities and comes in a 6x6mm 48-pin QFN package. It is priced at $1.25 each in 10K pcs quantities.

About Lumissil

Lumissil is the analog/mixed-signal product division of ISSI, a fabless semiconductor company that designs and markets high performance integrated circuits for the following key markets: (I) automotive, (ii) communications, (iii) industrial/medical, and (iv) digital consumer. Lumissil’s primary products are LED drivers for low to mid-power RGB color mixing and high power lighting applications. Other products include audio, sensor, high speed wired communications, optical networking ICs and Application-specific microcontrollers. ISSI/Lumissil is headquartered in Silicon Valley with worldwide offices in Taiwan, Japan, Singapore, China, Europe, Hong Kong, India, and Korea. Visit our web site at http://www.lumissil.com/

About Integrated Silicon Solution, Inc. (ISSI)

ISSI is a fabless semiconductor company that designs, develops and markets high performance SRAM, DRAM, Flash memory (including NOR flash, NAND flash and managed NAND solutions (eMMC)), and Analog/Mixed-signal integrated circuits. ISSI provides high-quality semiconductor products and has been a committed long-term supplier to its customers. ISSI is headquartered in Silicon Valley with worldwide offices in Taiwan, Japan, Singapore, China, Europe, Hong Kong, India, and Korea. Visit our web site at http://www.issi.com/

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/199278f3-bc1a-4b2e-a50d-a9b1edce2ce0

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Windows 10 S is a specific configuration of Windows 10 Pro that offers a familiar Windows experience that’s streamlined for security and performance. Windows 10 S provides the best of the cloud and full featured apps, and is designed for modern devices. Microsoft Defender is always on and always up-to-date.

Windows 10 S will only run verified apps from the Store and verified drivers from Windows Update. Windows 10 S provides supports Azure Active Directory, and when paired with MSA or Intune for Education, Windows 10 S defaults to storing files to OneDrive.

Features enabled for Windows 10 S

Windows 10 S Mode protects customers by using a combination of code integrity policies, hardware, and certification for apps. Windows 10 S will only run executable code that is signed with a Windows, WHQL, ELAM, or Store certificate from the Windows Hardware Developer Center Dashboard. This includes companion apps for drivers.

Windows 10 S default modern app configuration

• Email: Mail
• Maps : Maps
• Photo viewer : Photos
• Search : Bing
• Video player: Movies & TV
• Web browser: Edge
• OneDrive automatically configured for MSA accounts so that documents, Photos, and Desktop are automatically synced and the user has 5GB of standard storage.

Hypervisor Code integrity policy

Hypervisor code integrity policy (HVCI) blocks the execution of unsigned or improperly signed binaries. Using unsupported binaries is only recommended when performing lab or factory image customization, or during deployment where the execution environment is either WinPE or Audit Mode.HVCI is not turned on by default, so you will need to turn it on. For instructions on how to do that, see Enable HVCI

Once the CI policy is enabled on a system, it is enabled in two places:

• Windows 10 S, enforced at boot
• UEFI firmware policy, enforced during firmware load and OS boot

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For more information, see Hypervisor-Protected Code Integrity (HVCI)

Signed drivers and Windows 10 S

Driver signing is different for Windows 10 S. To install on Windows 10 S, driver packages must meet the following requirements:

• Driver packages must be digitally signed with a Windows, WHQL, ELAM, or Store certificate from the Windows Hardware Developer Center Dashboard.
• Companion software must be signed with a Microsoft Store Certificate.
• Does not include an *.exe, *.zip, *.msi or *.cab in the driver package that extracts unsigned binaries.
• Driver installs using only INF directives.
• Driver does not call blocked inbox components.
• Drivers does not include any user interface components, apps, or settings. Instead, use Universal applications from the Microsoft Store, for example:
  • Hardware Support Apps
  • UWP device apps
  • Centennial Apps
  • Driver and firmware servicing uses Windows Update and not an updater app.

For more information, see Windows 10 S Driver Requirements and Publish a driver to Windows Update.

What's not supported

Windows 10 S does not allow any apps that aren't in the Store. A second limitation is that Windows 10 S does not allow on-premise domain joins. Additionally, some Windows customizations and some apps are not supported. For more information, see Planning a Windows 10 S deployment

The following components are blocked from running in Windows 10 S. Any script or application that calls one of these blocked components will be blocked. If your manufacturing process uses scripts or applications that rely on blocked components, you can temporarily enable manufacturing mode for configuring and testing, but you can't ship a PC with manufacturing mode enabled.

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• bash.exe
• cdb.exe
• cmd.exe
• cscript.exe
• csi.exe
• dnx.exe
• kd.exe
• lxsmanager.dll
• msbuild.exe
• ntsd.exe
• powershell.exe
• powershell_ise.exe
• rcsi.exe
• reg.exe
• regedt32.exe
• windgb.exe
• wmic.exe
• wscript.exe