NORITAKE ITRON VFD modules are 256 x 64 dot graphic VFD modules with a single 5V supply, high brightness blue-green display, and operating temperature range of -40°C to +85°C. The module includes VF display glass, VF drivers, and micro-controller ICs with refresh RAM, character generator, and interface logic. It features a high-speed 8-bit parallel interface and an asynchronous serial interface, with three character font tables and user-defined characters available.
The GU256x64D-3900 is a 256 × 64 dot‑graphic vacuum‑fluorescent display module with high‑brightness blue‑green illumination. It integrates the VFD glass, driver ICs, and a micro‑controller with refresh RAM, offering both a high‑speed 8‑bit parallel interface and an asynchronous RS‑232 serial interface.
The datasheet lists electrical and environmental specifications, connector pinouts, and a full set of RS‑232 and parallel interface commands. It also includes mechanical dimensions, mounting hole data, and recommended operating conditions for reliable integration into host systems.
| Display Area (mm) | 115.05 x 28.65 |
|---|---|
| Power Supply Voltage | 5.0 VDC ±4 % (typ.) |
| Power Supply Current | 0.85 A (typ.) |
| Dot Size / Pitch | 0.3 mm x 0.3 mm / 0.45 mm x 0.45 mm |
| Operating Temperature | -40 °C to +85 °C |
| Storage Temperature | -40 °C to +85 °C |
| Operating Humidity (non‑condensing) | 20 % to 80 % RH @ 25 °C |
| RS232 High Input (VIH) | 3.0 VDC min. |
| RS232 Low Input (VIL) | -3.0 VDC max. |
The module can operate from –40 °C up to +85 °C.
It requires a 5.0 VDC supply with a tolerance of +4 % / –5 %.
The display area measures 115.05 mm by 28.65 mm.