MAX7219 Microcontroller 4-in-1 Display Dot Matrix Module

MAX7219 Microcontroller 4-in-1 Display Dot Matrix Module This MAX7219 Microcontroller 4-in-1 Display Dot Matrix Module is an integrated serial input/output common-cathode display driver, it connects the microprocessor 7-segment digital LED display with 8 digits, you can also connect a bar graph display or 64 independent LED. Thereon including a B-type BCD encoder chip, multi-channel scanning loop segment word driver, but also a static RAM 8 x 8 for storing each data. Only one external register is used to set the segment current of each LED. Features: A single module can drive a 8×8 dot matrix common cathode Operating voltage: 5V Dimensions: length 12.8 cm X 3.2 cm wide and 1.4 cm high Fixing screws with 64 holes with a diameter 3mm Module with input and output interfaces Support for cascading multiple modules Wiring Instructions: The left side of the module to the input port, the right to an output port. When the control of a single module, simply input port connected to CPU When a plurality of cascaded modules, input and output termination CPU, an input terminal of the second output end of the first module a module, the first two modules of the input terminal of the three termination modules, and so on. .. 51 microcontrollers, for example: VCC ? 5V GND ? GND DIN ? P2.2 CS ? P2.1 CLK ? P2.0