This document is the technical information for Densitron Corporation LM4790 4 LINE X 40 CHARACTERS LCD MODULE A E0200, which details the specifications, dimensions, precautions, etc. of the product.
The LM4790 is a dot‑matrix LCD module that integrates a liquid crystal display, CMOS driver, controller LSI, PCB, metal frame and LED backlight. It supports a 4‑line by 40‑character display format with a 5 × 7 pixel font and 1/16 duty driving method.
The document provides full mechanical dimensions, absolute maximum ratings, electrical characteristics, timing parameters, optical performance and optional backlight configurations, along with pin‑out and interface descriptions for system integration.
| Package Dimensions | 280.0 mm (W) × 88.0 mm (H) × 11.3 mm (D) |
|---|---|
| Display Format | 4 lines × 40 characters |
| Character Font | 5 × 7 mm with cursor dots |
| Driving Method | 1/16 duty |
| LC Driver Supply Voltage (VpD‑Vo) | 0 V to 13 V |
| Operating Temperature | -20 °C to +70 °C |
| LED Backlight Voltage | 5 V to 6 V |
| LED Backlight Current | 2200 mA to 2300 mA |
The module is rated to operate from –20 °C up to +70 °C.
The module measures 280 mm wide, 88 mm high and up to 11.3 mm deep.
It can display 40 characters per line across 4 lines.
The backlight operates at 5 V to 6 V with a current of 2.2 A to 2.3 A.