Product description
MAX7219 is a sort of built-in serial enter / output frequent cathode show driver, it connects the microprocessor with 8 digit 7 digit LED show, can also join the road chart show or 64 unbiased LED. It contains an on-chip BCD B encoder, a multi scan circuit, a phase phrase driver, and there’s a 8*8 static RAM used to retailer every knowledge. Just one exterior register is used to set the phase present for every LED.
A handy 4 wire serial interface could be linked to all general-purpose microprocessor. Every knowledge could be addressed within the replace with out rewriting all of the show. MAX7219 additionally permits the person to pick out a knowledge for every code or not.Your complete machine comprises a 150 A low energy off mode, analog and digital brightness management, a scan restrict register permits the person to show the 1-8 bit knowledge, as there’s a detection mode for all LED luminescence.
Solely want 3 IO port can drive 1 dot matrix!Dot matrix show no flicker! Help cascade!
Module parameters:
1 single module can drive a 8*8 frequent cathode dot matrix
2 module working voltage: 5V
3 module measurement: 5 cm lengthy X width 3.2 cm X excessive 1.5 cm
4 with 4 fastened screw holes with diameter of 3mm and can be utilized to retailer M3 pillars fastened
5 module with enter and output interface, assist for a number of modules cascade
Connection description:
1 the left aspect of the module is the enter port, and the fitting is the output port.
2 management of a single module, the enter port solely have to obtain CPU
Greater than 3 modules cascaded, first modules are linked with the enter finish of the CPU, the output finish is linked with the enter finish of the second modules, second modules output terminal third module enter, and so forth…
Taking 51 single chip microcomputer for example:
VCC – 5V
GND – GND
DIN – P22
CS – P21
CLK – P20
★1 single module can drive an 8 8 dot matrix frequent cathode.
★1 on the left block to an enter port, an output port on the fitting.
★5 modules with enter and output interfaces, assist for cascading a number of modules.
★MAX7219 dot matrix show module
★Module measurement : 5 cm X 3.2 cm extensive X 1.5 cm excessive
