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Specification
Brand : EC Buying
BulletPoint : TRYLON Universal Antenna Face Mount with 2-3/8 OD x 72 pipe
BulletPoint1 : MAX7219 is an integrated serial input/output common cathode display driver. It connects the microprocessor with 8-digit 7-segment digital LED display, and can also connect the bar graph display or 64 independent LEDs.
BulletPoint2 : The MAX7219 includes an on-chip B-type BCD encoder, a multiple-scan circuit, a 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
BulletPoint3 : A convenient four-wire serial interface can connect all general-purpose microprocessors. Each data can be addressed, and there is no need to overwrite all displays when updating. MAX7219 also allows users to choose whether to encode or not to encode each data
BulletPoint4 : The whole equipment includes a 150 μA low-power off mode, analog and digital brightness control, a scan limit register allows users to display 1-8 bits of data, and a detection mode that allows all LEDs to glow
BulletPoint5 : Only three IO ports are needed to drive one dot matrix. There is no flicker when the dot matrix is displayed. Support cascading
Color : 4*1
CompatibleDevices : 51 single-chip computer
ConnectivityTechnology : SPI
IncludedComponents : MAX7219 Dot Matrix Module
ItemName : EC Buying MAX7219 Dot Matrix Display - 4 in 1 Integrated Display, SCM Control Drive, LED, Electronic Components, 5V
ItemPackageDimensions_Height : 25.4 centimeters
ItemPackageDimensions_Length : 3.6 centimeters
ItemPackageDimensions_Width : 17.3 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : led-segment-displays
Manufacturer : EC Buying
Material : copper
Material1 : plastic
Material2 : metal
ModelNumber : 10 Segment RGYB LED Bar
NumberOfItems : 3
PartNumber : 10 Segment RGYB LED Bar
ProcessorCount : 1
ProductDescription : Product parameter
Operating voltage: 5V
Specification size: 13cmX3.2cmX1.3cm (long X width X height)
With 32 fixing screw holes, aperture 3mm
A single module can drive an 8*8 dot matrix common cathode
A module has input/output interfaces

Instructions
When controlling a single module, you only need to connect the input port to the CPU
When multiple modules are cascaded, the input of the first module connects to the CPU, the output to the input of the second module, the output of the second module to the input of the third module, and so on..
Take 51 single-chip computer as an example:
VCC to 5V
GND to GND
DIN to P2.2
CS to P2.1
CLK to P2.0
ProductSiteLaunchDate : 2023-03-03T09:27:51.285Z
Size : 5pcs Cathode 3641AH
SupplierDeclaredDgHzRegulation : not_applicable
UnspscCode : 43211900
WirelessCommStandard : infrared