Description The mini 8×8 Dot Matrix LED Display Module is based on the MAX7219 dot matrix module chip. It is a serial input common-cathode driver which interfaces microcontrollers to LED matrices. All common microcontrollers including Arduino models can be connected to this module. A connection is made by using the 4-wire serial interface. Each output can be addressed without refreshing the entire display. This module requires only 3 I/O lines for driving the display, making it ideal for your microcontroller projects. Features such as display brightness can be adjusted in software to the MAX7219. Pin Descriptions CLK: Serial-Clock Input. CS: Chip-Select Input. DIN: Serial-Data Input. DOUT: Serial-Data Output. VCC: Positive Supply Voltage. Connect to 5V. GND: Ground Specifications Operating Voltage: 4.7V – 5.3V DC Operating Current: 320mA Display Pixel Size: 3.75mm LED Color: Red For more detailed information on the MAX7219, see the manufactures specification sheet.
