The NORITAKE ITRON VFD MODULES 256 x 64 Dot Graphic Dot Graphic VFD Module GU256x64C-3900 features a 256 x 64 pixel graphic display, 5V supply, high brightness blue green display screen, operating temperature from -40°C to +85°C, and a serial interface with baud rates up to 38400.
The GU256x64C-3900 is a 256 × 64 dot graphic vacuum‑fluorescent display module that includes the VFD glass, driver ICs, refresh RAM, and a high‑brightness blue‑green illumination system. It operates from a 5 V TTL/CMOS compatible supply and offers both high‑speed 8‑bit parallel and asynchronous serial interfaces.
The module supports RS232 serial communication up to 38 400 baud (no parity) and provides a rich set of software commands for display control, character definition, and scrolling. Electrical specifications, mounting dimensions, and connector options are detailed for integration into host systems.
| Power Supply Voltage (VCC) | 5.0 VDC ±5% |
|---|---|
| Power Supply Current (ICC) | 430 mA DC typ. |
| Display Area | 83.08 × 20.68 mm |
| Dot Size / Pitch | 0.2 × 0.2 mm / 0.325 × 0.325 mm |
| RS232 High Input (VIH) | 3.0 VDC min. |
| RS232 Low Input (VIL) | -3.0 VDC max. |
| Operating Temperature | -40 °C to +85 °C |
| Storage Temperature | -40 °C to +85 °C |
| Operating Humidity | 20 % to 80 % RH @ 25 °C |
| Luminance | 500 cd/m² |
It requires a 5.0 VDC supply with a tolerance of ±5 %.
The asynchronous serial interface accepts baud rates up to 38 400 with no parity.
The power‑on rise time should be less than 100 ms.
The module operates from –40 °C to +85 °C.