VFD Driver

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What is VFD?
VFD Driver is the integrated circuit which working with VFD. A variable-frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor.

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VFD Divers:
In our database we have categorized the VFD drivers into two prominent categories; their prominent features are elucidated below:

1. Segment type
This is a VFD (Vacuum Fluorescent Display) controller/driver to dynamically drive up to 16 segments x 14 digits. It consists of display data RAM,an address counter,command registers,a serial interface and high voltage drivers. This features the direct connection to MPU and the high voltage drivers well-suited for various VFD displays.

Features:

• Directly drives (16-segment×14-digit)
• High VFD Driving Voltage
• Display Shift Function
• Programmable Duty Ratio for Timing Signal (2/16,4/16,6/16,8/16,
  0/16, 12/16, 14/16, 15/16 duty) or with Programmable Display Duty Ratio (1/4, 1/8, 1/12 or 1/16)
• Display ON/OFF Control Function
• Models with Display Data RAM (30×8-bit) or (47x8 bits)
• Models Built-in Oscillator (External Ceramic Resonator or External Resistor or External Clock) or CR Oscillator (External CR and capable of clock input from outside)
• 8-bit Serial Interface
• Power-ON Reset Function
• Operating Voltage (3.3V / 5.0V)
• C-MOS Technology

2. Character type
This is a Dot Matrix VFD (Vacuum Fluorescent Display) Controller Driver for 16-character 1-line with Icon display. It contains character generator ROM/RAM, address counter, oscilla- oscillation circuit, command register, Icon display RAM, high voltage drivers, tion and serial interface circuit. The display data or the command data is transmitted with the serial interface circuits.

Features

• 16-character 1-line Dot Matrix VFD Controller Driver
• Serial Interface with Microprocessor
• Display Data RAM (16×8 bits : 16-character 1-line Display)
• Character Generator ROM (8,400 bits : 240 Characters for 5×7 Dots)
• Character Generator RAM (35 x 8 bits : 8 Patterns (5×7 Dots))
• Icon Display RAM (16 x 2 bits : Maximum 32 Icon)
• VFD Driving Voltage (| VDD-VFDP |≦ 45V
  Timing Signal : 16
  Segment Signal : 35 (Except for Icon Segment Signal))
• Output Port for LED (1)
• Address counter auto increment function when RAM data written
• Display ON/OFF Function
• Digit Scan Function
• Display Duty (Contrast Control) (8-step (8/16 to 15/16))
• Character / Icon Shift Function
• Display Mode (Selectable between 9 to 16 Digits)
• Oscillation Circuit on-chip (External Resistor and Capacitor Required)
• Operating Voltage (3.0V to 5.5V (Except VFD Driving Voltage))
• C-MOS Technology