The SMS0408D LCD display module is a standard digital pen segment type LCD display module, which has the characteristics of wide voltage working range, low power consumption, and simple LED dot backlight. It adopts a two-wire serial interface to connect with MCU microcontroller and is widely used in handheld instruments and intelligent display instruments.
The SMS0408D is a standard 4‑digit segment‑type LCD module that can display four numeric characters with a decimal point and a single time‑separator segment. It operates over a wide voltage range, features low power consumption, and includes a simple LED backlight.
The module connects to a microcontroller via a two‑wire serial interface (VCC, serial data, clock) and provides pins for backlight power. Detailed electrical parameters, mechanical dimensions and an address mapping table are provided for integration into handheld instruments and smart displays. This manual is written in Chinese.
| Display capacity | 4 digits with decimal point + 1 segment time separator |
|---|---|
| Operating voltage | 2.7~5.5 V |
| Backlight voltage | 4.2 V |
| Working current (3.0 V) | 200 µA |
| Backlight current | 10 mA |
| Character height | 8.9 mm |
| Operating temperature | -10 ~ +50 °C |
| Storage temperature | -20 ~ +60 °C |
| Interface type | Two‑wire serial interface |
The module works with a supply voltage from 2.7 V to 5.5 V.
The backlight draws 10 mA of current.
It can display four digits with a decimal point and one segment for a time separator.