Display module MAX7219 point line module control module single -chip module module

Gift DuPont!IntersectionIntersection

Information download address:

http://pan.baidu.com/s/1ntuotrr

MAX7219 is a integrated serial input/output co -cathode display drive. It connects microprocessors and 7 -digit 7 -segment digital LED display. It can also connect a line chart display or 64 independent LEDs.It includes a BCD encoder on a chip, a multi -road scanning circuit, a segment drive, and a 8*8 static RAM used to store each data.Only one external register is used to set the segment current of each LED

A convenient four -line serial interface can connect all general microprocessors.Each data can be addressing without rewriting all display when updating.MAX7219 also allows users to choose or not coded each data.
The entire device contains a 150 μA low power closing mode, analog and digital brightness control. A scanning restriction register allows users to display 1-8-bit data, and there is a detection mode that allows all LEDs to glow.

You only need 3 IO ports to drive 1 dot matrix!There is no flicker when the dot matrix is ​​displayed!Support level!

Module parameters:

1. A single module can drive a 8*8 common yin dot matrix

2. Module working voltage: 5V

3. Module size: 5 cm X width 3.2 cm x height 1.5 cm high

4. Bring 4 fixed screw holes with a pore diameter of 3mm. You can use the M3 copper column of our shop to fix

5. Module with input and output interface, supporting multiple module -level connections

Wiring description:

1. The left side of the module is the input port and the output port on the right.

2. When controlling a single module, you only need to receive the input port to the CPU

3. During multiple modules, the input terminal of the first module is connected to the CPU, the output end connects the input terminal of the second module, and the output terminal of the second module connects the input terminal of the 3rd module, and so on....

Take 51 single -chip machine as an example:

VCC → 5V

GND → GND

Din → P22

CS → P21

CLK → P20

Delivery list:

1. Max7219 point line module (finished product, with a little bit, has been tested)

2. 5 DuPont Line

3. One portion (principle diagram, test program, send or download through mailboxes or self -service)