SMS1407 LCD display module is a digital pen segment LCD display module that can display 14 digits and 11 segment prompts and 14 decimal points. It is low power and widely used in intelligent gas meters, water meters, electricity meters, and heat meters.
This manual describes the SMS1407 liquid crystal display module, a 14‑digit numeric LCD with 11 segment symbols and 14 decimal points. It is designed for low‑power operation and can be interfaced with an MCU via a three‑wire serial bus, making it suitable for smart meters, water meters, and gas meters.
The document lists the main technical parameters such as voltage range, current consumption, temperature limits, humidity tolerance, display mode, and storage conditions. It also details the three‑wire interface signals (CS, CLK, DI, VSS, VDD), provides the physical dimensions, and includes a segment mapping table for driving the display. This manual is written in Chinese.
| Display capacity | 14 digits + 11 segment symbols + 14 decimal points |
|---|---|
| Operating voltage | 4.8 V ~ 5.2 V |
| Operating current | <300 mA (5.0 V) |
| Relative humidity (max) | |
| Operating temperature range | -10 °C ~ +?? °C (text garbled) |
| Display mode | Reflective |
| Storage temperature range | -20 °C ~ +?? °C (text garbled) |
| Interface type | Three‑wire serial interface (CB type) |
| CS signal | Chip select input |
| CLK signal | Serial shift clock input |
| DI signal | Serial data input |
The module operates from 4.8 V to 5.2 V.
It can show 14 numeric digits, 11 segment symbols, and 14 decimal points.
It uses a three‑wire serial interface (CB type) with CS, CLK, DI, VSS and VDD signals.