供应三星产VFD模组20T202DA1J

三星产20T202DA1J

真空荧光显示屏（VFD）是从电子管衍生出来的显示器件，由灯丝发射电子经栅*加速后产生加速电子流，打到有荧光粉的阳*，荧光粉发光。是一种自身发光显示器件。由于它可以做多色彩显示，亮度高，又可以用低电压来驱动，易与集成电路配套，所以被广泛应用在家用电器、办公自动化设备、工业仪器仪表及汽车等各种领域中。
  
 1. SCOPE
* This specification applies to VFD module (Model No.: 20T202DA1J) manufactured by Samsung SDI .
2. FEATUR*
* LCD Compatible: Drop-in-replacement (Same Interface and Mechanical Dimension as LCD Module).
* High Quality, Attractive and Readable Display: 5*7 Dot Matrix T*e Vacuum Fluorescent Display.
* Compact and Lightweight: Flat Panel (VFD) and Surface Mount Technology.
* +5V single power supply.
* Brightness Level: Adjustable into 4 Levels (25%, 50%, 75% and 100%) by Software Command.
* Support CG-RAM Fonts and CG-ROM: 8 User-definable Characters (Volatile) and 240 Masked CG-ROM Fonts.
3. PRECAUTIONS
* Avoid applying excessive shock or vibration beyond the specification for the VFD module.
* Since VFDs are made of gl* material, careful handling is required. i.e. Direct impact with hard material to the gl*
surface (especially exhaust tip) may crack the gl*.
* When mounting the VFD module to your system, leave a slight gap between the VFD gl* and your front panel. The
module should be mounted without stress to avoid flexing of the PCB.
* Avoid plugging or unplugging the interface connection with the power on, otherwise it may cause the severe damage to
input circuitry.
* Slow starting power supply may cause non-operation because one chip MCU won't be reset.
* Exceeding any of maximum ratings may cause the permanent damage.
* Since the VFD modules contain high voltage source, careful handling is required during powered on.
* When the power is turned off, the capacitor does not discharge immediately. The high voltage applied to the VFD must
not contact to the ICs. And the short-circuit of mounted components on PCB within 30 seconds after power-off may
cause damage to those.
* The power supply must be capable of providing at least 5 times the rated current, because the surge current can be more
than 5 times the specified current consumption when the power is turned on.
* Avoid using the module where excessive noise interference is expected. Noise may affects the interface signal and
causes improper operation. And it is important to keep the length of the interface cable less than 50cm.
* Since all VFD modules contain C-MOS ICs, anti-static handling procedures are always required.