LR-080VRAM Industrial Liquid Crystal Display User Manual, introduces product hardware and software information, including common signal interpretation, basic principles, system structure diagram, performance parameters, communication and connection, memory and screen dot matrix correspondence, memory and screen pixel point correspondence diagram, reading data from display memory, I/O port read and write timing, color composition, rotary switch definition, mechanical dimensions and layout, application examples, after-sales support instructions, transportation damage handling, display storage, precautions, control circuit precautions, common problems and solutions, etc.
The LR-080VRAM is an 8‑inch industrial TFT LCD display with a 640×480 pixel resolution and VRAM capacity of 512 K×8 bits. It supports both 64‑color and 256‑color modes and can be interfaced via a 34‑pin parallel bus to micro‑controllers or computers.
The manual covers hardware principles, system block diagram, performance specifications, wiring and pin definitions, memory‑to‑screen mapping, timing requirements, and detailed troubleshooting steps. Safety and handling recommendations are also provided for reliable operation in industrial environments. This manual is written in Chinese.
| Screen diagonal | 8.0 inch |
|---|---|
| LCD type | TFT |
| Resolution | 640 × 480 |
| Pixel size | 0.2535 mm × 0.2535 mm |
| VRAM capacity | 512 K × 8 bits |
| Color depth | 64 / 256 colors |
| Viewing angle | Left/Right 60°, Up 50°, Down 60° |
| Operating voltage | DC 12 V ± 2 V |
| Power consumption (active) | 750 mA @ 12 V |
| Backlight power consumption | 300 mA @ 12 V |
| Operating temperature | -20 °C to +70 °C |
| Storage temperature | -30 °C to +80 °C |
| Brightness | 380 cd/m² |
| Contrast ratio | 500:1 |
| LCD lifetime | >50 000 h continuous operation |
| Backlight type | Cold cathode fluorescent (CCEFL) |
| Backlight lifetime | 25 000 h continuous operation |
| Touch screen option | Interface 232/USB |
Check that the power supply is correctly connected, the voltage is +12 V ± 2 V, the polarity is correct, and that the inverter and signal lines are properly connected.
The BG0VC signal controls the backlight: a high level turns the backlight on, a low level turns it off.
The display includes 512 K × 8 bits of VRAM.