The device communicates with the host MCU via the SPI interface.
Using beeprog pic serial#
The driver circuit consists of two 74HC595 - 8bit, serial input - parallel output shift registers, one CD4017 - a Jonson topology decade counter with 10 outputs, and one ULN2003A - an IC with seven integrated Darlington transistor pairs, all chips produced by Texas Instruments. Multiplexed like this, modules have a fairly low number of pins (12 per module), making them suitable to be driven by shift registers and a decade counter ICs. The LED elements in one column have their anodes connected and routed to a single column pin. The LED elements in one row have their cathodes connected and routed to a single row pin. A single LED matrix module is composed of 35 LED elements, grouped in rows and columns.
Two 7x5 LED dot matrix modules form a display. By using functions provided by MikroElektronika, it is possible to make a text scroller in a very simple way, greatly expanding the functionality of the 7x10 click. This click board™ can be used in a lot of different applications that require a clearly visible display of text or graphics, such as the public clock displays, temperature displays and similar. Additionally, turn-on and turn-off times of the matrix cells are optimized for a clean and fluid display performance, with no flickering or lag.
These displays produce clean and uniform patterns since the elements are optically isolated from each other and there is no light bleeding between the adjacent LED cells. The click board has two LED dot matrix modules with 7x5 stylish, round, dot-like LED elements. 7x10 R click is a LED dot matrix display click, which can be used to display graphics or letters in a very simple and easy way.
0 kommentar(er)
