The NEC FC20X2JA-BB is a 2-line by 20-character Vacuum Fluorescent Display (VFD) module designed for applications requiring high brightness and superior readability across variable lighting conditions. This 40-character display delivers 1000 cd/m² luminance with blue-green illumination, wide viewing angles, and excellent contrast ratio. The module features a 5×7 dot matrix per character with 5 mm character height and supports standard ASCII fonts plus user-definable character RAM. Dual interface options—8-bit parallel (5V CMOS compatible) and asynchronous serial (9600 baud)—enable integration into diverse embedded systems and controller architectures.
Technical Specifications
• Display Configuration: 2 lines × 20 characters (40 total)
• Dot Matrix: 5×7 per character
• Dot Pitch: 0.75 × 0.75 mm; dot size 0.5 × 0.5 mm
• Character Height: 5 mm
• Luminance: 1000 cd/m² (typ.)
• Color: Blue-Green illumination
• Power Supply: 5 VDC ±5%
• Operating Current: 0.4 ADC (typ.) at 5 Vcc
• Inrush Current: Up to 2× Icc at power-on
• Operating Temperature: −20°C to +70°C
• Storage Temperature: −40°C to +85°C
• Operating Humidity: 0 to 85% RH @ 25°C
• Power-On Rise Time: < 50 ms
– Key Features
• Parallel interface: 8-bit, 5V CMOS compatible
• Serial interface: Asynchronous, 9600 baud
• Logic levels: VIH 2.0 VDC min., VIL 0.8 VDC max. (Vcc = 5V)
• Output levels: VOH 3.5 VDC min. (IOH = −2.0 mA), VOL 0.4 VDC max. (IOL = 2.0 mA)
• User-definable character RAM for custom symbols
• Mounting holes: 3.5 mm diameter
• Test mode support via control commands
– Typical Applications
Instrument panels, industrial control systems, point-of-sale terminals, embedded medical devices, and any system requiring high-contrast alphanumeric display in variable ambient lighting.
– Compatibility & Integration
The FC20X2JA-BB integrates directly with microcontroller buses via parallel interface or operates over extended distances using the asynchronous serial link. 5V CMOS logic compatibility ensures broad host processor support.
