The MAX7219 Digital Tube Display Module is a versatile and widely-used component for controlling 7-segment LED displays, dot matrix displays, or bar graph displays. Here are the detailed specifications and features of the module, particularly for the red color variant:

Key Specifications

1. Operating Voltage: 5V DC
2. Communication Interface: SPI (Serial Peripheral Interface)
3. Display Type: Common-cathode 7-segment display
4. Number of Digits: 8
5. LED Color: Red
6. Max Current per Segment: 40mA
7. Control Circuit: MAX7219 driver IC
8. Module Size: Approximately 12.8cm x 3.2cm

Features

1. Ease of Use: The module uses the MAX7219 IC, which simplifies the process of driving multiple LEDs. It can control up to 64 individual LEDs (8 digits of 7-segment displays).
2. Daisy Chaining: Multiple modules can be cascaded together for expanded displays.
3. Brightness Control: Software-controlled brightness using a 16-level brightness adjustment.
4. Data Input: Data is input serially to the module and is shifted in with a clock pulse.
5. Low Power Consumption: Efficient LED drive with low power consumption.
6. Decoding Mode: Supports both BCD and no-decode modes for flexibility in display output.

Pin Configuration

• VCC: Power supply (5V)
• GND: Ground
• DIN: Data input
• CS: Chip select
• CLK: Clock input