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Parameter Dimension
Specification Details
Product Model
A029
Product Weight
Cased weight: 18g — Bare PCB weight: 9g
Module Model
0.56-inch 2-Digit LED Digital Tube Module (A029)
PCB Outline Dimension
48.00mm × 26.00mm
Digital Tube Specification
0.56 inch, 2-digit common anode digital tube with decimal points
Driving Method
Serial-in Parallel-out Shift Register (Typically 74HC595, two chips cascaded)
Communication Interface
3-wire Serial Control (DATA/CLK/LATCH)
Supply Voltage
5V (Onboard Power Indicator: PWR)
Onboard Functions
Power indicator, XH2.54 socket / Double pin header interface
Interface Definition (CN1)
Positive Power Pin for 5V - VCC
Negative Power Pin (Must share GND with MCU) - GND
Serial Data Input Pin - DATA
Shift Clock Signal Pin - CLK
Latch Signal Pin for Display Data Update - LATCH
Key Feature - Simplified Control
Only 3 MCU I/O pins required for driving, saving microcontroller resources
Serial-in Parallel-out Driving
Two cascaded 74HC595 chips: one for segment code control, one for bit selection control, no complex peripheral circuits needed
Independent 2-Digit Control
Tens and units digits can be set separately; supports display range 00~99, decimal points enable two decimal place display
Installation Friendly
Pre-reserved mounting holes at four corners for direct installation on device panels
Low Power Design
Driven by dynamic scanning mode, low power consumption and screen burn resistance
Optional Packaging Solutions
① Anti-static bag soft packaging ② White cardboard hanging box ③ Kraft paper box
