SMS1214 is a low-power liquid crystal display module produced by Changsha Sunman Electronic Co., Ltd. It can display 12 digits and 7-segment prompts and 12 decimal points, which are widely used in telephone meters and intelligent display meters.
The SMS1214 is a numeric LCD display module that can show one digit, segment characters and one decimal point. It operates with low power consumption and connects to an MCU via a three‑wire serial interface, making it suitable for telephone meters and smart display instruments.
The manual lists the main technical parameters, three‑wire serial interface signals, physical dimensions, and an address mapping table for the module’s LCD buffer registers. This manual is written in Chinese.
| Display capacity | 1 digit, segment characters, 1 decimal point |
|---|---|
| Operating voltage | 4.s ~s.av |
| Optimal voltage | sov |
| Working current | 1. smaA( 5sv) |
| Character height | 12 mm |
| Display type | Reflective positive display |
| Interface type | Three‑wire serial interface (type A) |
It uses a three‑wire serial interface (type A) with signals VSS, VPP, LOAp, PI and CLK.
The module operates from approximately 4.s to s.av volts.
The character height is 12 mm.