Max7219 4-in-1 Led Dot Matrix Display Module

MAX7219 Dot Matrix 4-in-1 Display 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.

Graphical LCD display 84 X 48 dot matrix LCD, 4 lines
Power supply: 2,7 V – 3,3 V
Data interface at level: 2,7 V – 3,3 V
Backlight voltage: max 3,3 V
Module size: 43,6 mm x 43,1 mm (width X height)

1.RST——— reset
2.CE————chip selection
3.DC———–selection data/orders
4.DIN———–serial line
5.CLK————serial Clock Speed
6.3.3 V.————VCC
7.LIGHT——— display backlight
8.GND———–power supply minus