MAX7219 LED Dot matrix 8-bit digital tube display control module 3.3V 5V microcontroller serial driver 7-segment

8-bit digital display module MAX7219 LED display Supports cascaded 8-bit serial IO port 3 controlSave your single-chip computer resources, do not need to open the timer scan,Liberating MCU do more!Only need to update the display data, a data transfer.MAX7219Digital tube display control moduleMAX7219Is a kind of integrated serial input/Output common cathode display driver,It connects the microprocessor with8A number of7Period of digitalThe LED, according to the article also can connect the chart or monitor64A separateThe LED.It includes a pieceBtypeBCDEncoder, multiplexing scanning circuit, period of word drives, and have another one8 * 8The staticRAMUsed to store every data.There is only one external registers used to setThe LEDThe period of current.A convenient four wire serial interface can join all general microprocessor.Each data can be addressed in the update does not need to rewrite all the display.MAX7219Also allows the user to each data selection code or code.The device contains a150mua.Low power off mode, analog and digital brightness control, a scan limit register allows the user to display1-8 -Bits of data, there is a let allThe LEDGlowing detection mode.Only need to3aIOThe mouth can drive8A digital tube!Digital tube display when not blink!Support cascading!Display effect as shown in the figure below:

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