MAX7219 8x8 LED Dot Matrix Display Module
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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!
Dot Matrix Display Module to the Arduino
| Vcc | 5V |
| GND | GND |
| DIN | Pin 12 |
| CS | Pin 10 |
| CLK | Pin 11 |
| 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 |
MAX7219
5
320
Red
32
32
6
50 x 32
20
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