MikroElektronika in Belgrade has developed an open specification for displays in development systems.
The DISplay CONnector (Discon) specification defines both display socket and display board to simplify the installation and replacement of any type of display on a development board that carries the Discon socket. Having a universal specification for displays on add-on boards avoids months of wasted development time.
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“With Discon, we are ensuring absolute compatibility between the development board and any of the supported displays, regardless of their size and type,” said Neb Matic, CEO of MikroE.
The specification details the functional and mechanical requirements, including the physical layout of the display board, communication and power supply pins, the size and the shape of the display board, and the silkscreen marking conventions for both the add-on boards and sockets.
It permits all sizes and styles of TFT display to be used – currently 3.5in, 4.3in, 5in and 7in units, and capacitive, capacitive with bezel, capacitive with frame, and resistive styles are supported.
The Discon display board socket consists of a 2×20-pin connector with a proprietary pin configuration and silkscreen markings. The connector is a female 2×20-pin device, on a standard 2.54mm pitch. It may also have a polarization post for easier positioning of the display board. The pin-out consists of four different groups of pins – I2C, GPIO, data pins for the parallel data-port, and optional control pins – along with power supply pins.