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- This is MAX7219 8x8 LED Dot Matrix Display Module
- A single module can drive an 8 * 8 common cathode lattice
- The Module operating voltage is 5V
- Requires only 3 communication wires of MCU
- Cascading multiple Matrix LED Module is very easy
- Size of the display is very compact
- Module with input and output interface, supports multiple modules cascade
MAX7219 8x8 LED Dot Matrix Display Module
The MAX7219 is a serial input / output common-cathode display driver that is connected to a microprocessor and has an 8-digit 7-segment digital LED display that can also be connected to a bar graph display or 64 separate LEDs. To store each data, an On B BCD encoder with an on-chip, multi-channel scanning loop word drive and an 8 x 8 static RAM is used. To set the current of each LED segment, only one external register is used.
All general-purpose microprocessors can be connected using a simple four-wire serial interface. You can also use this display module in your Arduino project as well.
Each data can be addressed in the update, which eliminates the need to rewrite the entire display. MAX7219 Dot Led Matrix display also allows the user to choose whether to code or not code each data point. The Dot Led Matrix display includes a 150A low-power shutdown mode, analogue and digital brightness control, a scan-limit register that allows the user to display 1-8 bits of data, and a let all LED light detection mode. A dot-matrix can be driven with only three IO ports! Flicker-free dot-matrix display! Cascades are supported!
Pin connection:
Dot Matrix Display Module to the Arduino
| Vcc | 5V |
| GND | GND |
| DIN | Pin 12 |
| CS | Pin 10 |
| CLK | Pin 11 |
Applications:
- Bar-Graph Displays
- 7-Segment Displays
- Industrial Controllers
- Electronic Panel Meters
- LED Matrix Displays
- Display symbols, simple graphics, and texts.
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Package Includes:
- 1 x MAX7219 8x8 LED Dot Matrix Display Module
Specifications:
| Driver IC |
MAX7219 |
| Input Voltage (V) |
5 |
| Max. Operating Current (mA) |
320 |
| LED Color |
Red |
| Length (mm) |
32 |
| Width (mm) |
32 |
| Height (mm) |
6 |
| PCB Size ( L x W ) mm |
50 x 32 |
| Weight (gm) |
20 |
Specifications:
MAX7219
Specifications:
5
Specifications:
320
Specifications:
Red
Specifications:
32
Specifications:
32
Specifications:
6
Specifications:
50 x 32
Specifications:
20
1. What is a MAX7219 module?
- The MAX7219 Dot Led Matrix Module is a serial input common-cathode driver that interfaces micro-controllers to LED matrices. All common micro-controllers can be connected to this module by using a 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.
2. What is a matrix LED display?
- "Dot Matrix" is a unique category of LED Displays and is also found in LCD and OLED products. The concept of LED Dot Matrix Display is the same as LCD Dot Matrix and OLED Dot Matrix. It is able to show characters, numbers, or graphics by lighting up different pixels(dots) of a Display.
3. How does a dot matrix display work?
- Dot matrix display is manufactured in various dimensions. Arrangement of LEDs in the matrix pattern is made in either of the two ways: Row anode-column cathode or Row cathode-column anode. By using this dot matrix display we can reduce the number of pins required for controlling all the LEDs.
