MAX7219 Dot Matrix Module MCU LED Display Control Kit
The MAX7219 is an integrated serial input / output common-cathode display driver, it is connected to a microprocessor with 8-digit 7-segment digital LED display can also be connected to the bar graph display or 64 separate LED. On B BCD encoder including an on-chip, multi-channel scanning loop word drive, but also an 8 x 8 static RAM is used to store each data. Only one external register is used to set the current of each LED segment.
The LEDs are RED on this unit.
A single module can drive an 8 * 8 common cathode lattice
2 module operating voltage: 5V
Module size: 5 cm in length X width 3.2 cm x 1.5 cm
Module on the left as an input port, output port on the right.
Control of a single module, simply input port to the CPU
3 more modules cascade input termination module of a CPU, 2 output termination module input and output of the two modules is terminated with the input end of the first three modules, and so on. ..
51 MCU, for example:
VCC → 5V
GND → GND
DIN → P22
CS → P21
CLK → P20
Package Includes: 1 x MAX7219 dot matrix module (LED colour RED)