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8 * 8 Max7219 dot matrix screen

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MAX7219 is an integrated serial input / output common cathode display driver. It connects the microprocessor with 8-digit 7-segment digital LED display, bar graph display or 64 independent LEDs. It includes an on-chip B-type BCD encoder, multi-channel scanning circuit, segment word driver, and an 8 * 8 static RAM to store each data. Only one external register is used to set the segment current of each LED. A convenient four wire serial interface can be connected to a general microprocessor. Each data can be addressed without rewriting all displays during update.
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8 * 8 Max7219 dot matrix screen

Product introduction

MAX7219 is an integrated serial input / output common cathode display driver. It connects the microprocessor with 8-digit 7-segment digital LED display, bar graph display or 64 independent LEDs. It includes an on-chip B-type BCD encoder, multi-channel scanning circuit, segment word driver, and an 8 * 8 static RAM to store each data. Only one external register is used to set the segment current of each LED. A convenient four wire serial interface can be connected to a general microprocessor. Each data can be addressed without rewriting all displays during update. MAX7219 also allows the user to choose to encode or not encode each data. The entire device contains one μ A's low-power off mode, analog and digital brightness control, a scan limit register that allows the user to display 1-8 bits of data, and a detection mode that makes all LEDs glow. Only three IO ports are needed to drive one dot matrix! There is no flicker during dot matrix display, and cascade is supported.


Product parameters

Parameter type Characteristics
Specification 32×32×14mm
Positioning aperture 3mm
Control signal Digital signal
Working voltage 5V
Interface 5P
Line sequence G V DIN CS CLK
Single module 8 * 8 common Yin dot matrix
response time <0.1μs

Single chip microcomputer wiring

接线方式

Maker:Automatic gate device

装置

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