MAX7219 Dot Matrix Module Controller Module Display Module SCM Control Drive LED Module Electronic Components Red Display Module
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- MAX7219 is an integrated serial input/output common cathode display driver. It connects the microprocessor with 8-digit 7-segment digital LED display, and can also connect the bar graph display or 64 independent LEDs.
- The MAX7219 includes an on-chip B-type BCD encoder, a multiple-scan circuit, a segment word driver, and an 8 * 8 static RAM to store each data. Only one external register is used to set the segment current of each LED
- A convenient four-wire serial interface can connect all general-purpose microprocessors. Each data can be addressed, and there is no need to overwrite all displays when updating. MAX7219 also allows users to choose whether to encode or not to encode each data
- The whole equipment includes a 150 μA low-power off mode, analog and digital brightness control, a scan limit register allows users to display 1-8 bits of data, and a detection mode that allows all LEDs to glow
- Only three IO ports are needed to drive one dot matrix. There is no flicker when the dot matrix is displayed. Support cascading
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