A convenient four-wire serial interface can connect all common microprocessor. Each data can be addressed in the update does not overwrite all of the display. MAX7219 also allows the user to select each of the data code or not coded.
The entire device includes a 150μA low-power shutdown mode, analogue and digital brightness control, a scan-limit register allows the user to 1-8 bits of data, there is a LED light so that all the detection mode.
Requires only three IO ports can drive a dot! No flashing dot matrix display! Support cascade!
Single module can drive a common cathode 8 * 8 dot matrix
Module Operating voltage: 5V
Module size : 5 cm X 3.2 cm wide X 1.5 cm high