Artículo: AMZ-B0DBKL9CS9
3PCS MAX7219 8x8 Dot Matrix LED Display Module MCU Control Drive
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0.67 kg
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- The MAX7219 serves as a sophisticated serial input/output driver designed for common cathode displays, facilitating a connection between microprocessors and a variety of visual output devices. It is capable of interfacing with an 8-digit 7-segment numerical LED display, a bar graph display, or controlling up to 64 standalone LEDs.
- This integrated circuit is equipped with an on-chip Type B BCD encoder, a multi-scan circuitry, a segment word driver, and an 8x8 static RAM that retains data for each display element. The configuration of LED segment currents is streamlined through the use of a single external register.
- A user-friendly four-wire serial interface is provided for compatibility with a broad range of general-purpose microprocessors, enabling individual data points to be selectively addressed. This feature eliminates the need to refresh all displays simultaneously during updates. The MAX7219 also grants users the flexibility to opt for data encoding on a per-item basis.
- The device is designed with a power-efficient shut-down mode that consumes as low as 150 μA, and it includes both analog and digital controls for brightness adjustment. It features a scan limit register that enables the display of data across 1 to 8 digits, and a diagnostic mode that illuminates all LEDs for testing purposes.
- Operation of a dot matrix display is achieved with minimal hardware, requiring only three IO ports, and ensuring a flicker-free display. The MAX7219 also supports the cascading of multiple units for extended display capabilities.
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