This document describes the features and characteristics of the NORITAKE ITRON VFD module GU140x16G-7806A, including 140x16 dot graphic display, single 5V supply, high brightness blue green display, operating temperature range of -40°C to +85°C, 3 multi-sized fonts, 4/8 bit parallel LCD and serial interfaces, etc.
The GU140x16G-7806A is a 140 × 16 dot graphic vacuum fluorescent display module with a blue‑green illumination. It includes the VFD glass, driver ICs, refresh RAM, character generator, and supports both 4‑bit and 8‑bit parallel as well as RS‑232, asynchronous and synchronous serial interfaces. Electrical specifications such as supply voltage (6 V), current (250 mA typical), and operating temperature (‑40 °C to +85 °C) are listed, along with optical data like luminance (700 cd/m²) and dot pitch (0.35 × 0.575 mm).
The manual details the LCD‑compatible command set, extended graphic commands, and port configuration. It explains how to set brightness, select interfaces, write text and graphics, and use the serial and parallel ports, providing timing diagrams and example command sequences for developers integrating the module into equipment.
| Luminance | 700 cd/m² |
|---|---|
| Colour of Illumination | Blue‑Green |
| Operating Temperature | -40 °C to +85 °C |
| Power Supply Current | 250 mA typical |
| Logic High Input (VIH) | 0.8 × VCC min |
| Logic Low Input (VIL) | 0.6 VDC max |
| Logic High Output (VOH) | 3.5 VDC min |
The module operates from –40 °C to +85 °C.
It supports 4‑bit and 8‑bit parallel interfaces, RS‑232, asynchronous TTL serial, and synchronous TTL serial.