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  • Mikromedia HMI Smart Display

  • Created: Nov 07, 2016

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This reference design is the schematic diagram is the Mikromedia human-machine interface (HMI) smart display solution. A thin-film-transistor LCD capacitive/resistive touchscreen with a high-performance microcontroller and essential circuitry on the back. The circuitry incorporates this terrific microcontroller, the FT900, it provides a plethora of connectivity options, making it the ideal choice for advanced technology bridging solutions. By executing instructions from shadow RAM, rather than flash memory, the FT900 can operate at true Zero Wait States (0WS) up to 100MHz with 310 DMIPS performance.

The FT900 is connected to the FT812/813 graphics controller; the FT900 sends the initial commands to the FT812/813, which then drives the display. The FT900 is also connected to serial flash memory, for which they have provided a library that comes with the example for the Mikromedia. The board can be programmed in two ways: with an external programmer or using a bootloader. In the first case, the hardware engineers at MikroElektronika have provided an additional breakout board which eases the process of putting down the code on the metal. The board has a connector for mikroProg for FT900 on one end, and a serial cable connector on the other. Attach the mikroProg, and on the other end, connect the board with the mikromedia using the flat cable. The cable should go in the “main” connector of the mikromedia. The breakout board also has the routed peripheral pins, in case you want to connect a peripheral device to the board. The mikromedia HMI also comes with a bootloader for FT900, that way, you can program the board through the USB port.

Mikromedia HMI is easy to integrate into larger systems, from consumer devices like vending machine screens to Industrial machines like vehicle dashboards. Also, the displays which are connected to the mikromedia board can be resistive or capacities for best interface.



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