Specification sheet for the Tianma TM402CBCWVBYA 40‑character STN LCD module with LED edge backlight.
The TM402CBCWVBYA is a 40‑character, 2‑line dot‑matrix LCD module that integrates the LCD panel, driver, and controller LSI on a single PCB. It features a STN positive LCD, yellow‑green backlight, and operates from a 5.0 V supply.
The document provides mechanical dimensions, absolute maximum ratings, electrical specifications, interface pinout, instruction set timing, and handling precautions for safe assembly and storage.
| LCD type | STN Positive |
|---|---|
| Backlight type | LED Edge |
| Operating temperature range | -20 °C to +70 °C |
| Power supply voltage (VDD) | 5.0 V |
| LED backlight drive current | 250 mA |
| Module size (W×H×D) | 182.00 mm × 33.5 mm × 11.20 mm |
| Number of characters | 40 × 2 (5×8 dot) |
| Data transfer interface | 8‑Bit Parallel |
The module operates from –20 °C to +70 °C.
The module requires a 5.0 V supply (VDD).
It displays 40 characters per line on 2 lines (5×8 dot matrix).