MAX 7219 8X8 dot matrix module
– Integrating serial input/output common cathode display driver, connects microprocessor to 8-digit or 7-digit LED display, bar graph display and 64 red LED.
– Operating Voltage: DC 5V
– With 4 screws holes, hole diameter: Approx. 3 mm/ 0.12 inch
– With input and output interfaces
– Supports several module cascade
– Module Dimensions: Approx. 32 ×32 ×13 mm/ 1.26 ×1.26 ×0.51 inch
– As the pictures show, the input port is in the left side of module, and the output port is in the right left of that.
– When only control a single module, just need to connect the input port to CPU.
– When connect more modules, input port of the first module should connect CPU, output port of that connects the input port of the second module, and the output port of the second module connects the input port of the third module, and so on.
– Taking 51-Single Chip Micro-controller as an example:
– VCC connects to 5V
– GND connects to GND
– DIN connects to P2.2
– CS connects to P2.1
– CLK connects to P2.0
1 Piece of PCB Board
1 Piece of AS Dot Matrix LED Module
2 Pieces of 1×8 Round Hole Female Header
2 Pieces of 5P Looper
1.Please don’t connect VCC and GND inversely, else the chip will burnt out.
2.When MCU-51 P0 port controls, the pull-up resistor must be connected, and the suggested resistance is about 4K7-10K.
3.Please insert the dot matrix to the round hole block firstly, and then insert the round hole block to the PCB board for wiring.
4.Please hold the side of dot matrix with words towards yourself, and the PIN of this side is on the order of 12345, from left to right.