MAX7219 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.
A convenient four-wire serial interface can be connected to all general-purpose microprocessor. Each data can be addressed in the update do not need to rewrite all of the display
The entire device contains a 150μA low-power shutdown mode, analog and digital brightness control, a scan-limit register allows the user to display data bits 1-8, and one for all LED luminescence detection mode.
The MAX7219 can be cascaded, which means you can also connect the output of one display to the input of a second display to create a 64x8 display.
Only three wires (DIN, CS & CLK) plus a power supply of 5VDC are needed to drive one or two of daisy chained dot matrix displays.
Perfect for your Internet of Things projects.
Specification:
A single module can drive a total of 8 * 8 dot matrix overcast
Working voltage: 5V
Size: *12.8 cm*3.2 cm *1.3 cm (L*W*H)
With 64 fixing screw holes, diameter 3mm
module with input and output interfaces, support for cascading multiple modules
Package includes: 1X MAX7219 Dot Matrix led Display 1X 90 degree 5-pin header 1X 5-wire Dupont Female to Female cable