HT16512 -- 1/4 to 1/11 Duty VFD Controller

General Description

HT16512 is a VFD (Vacuum Fluorescent Display) controller/driver that is driven on a 1/4 to 1/11 duty factor. It consists of 11 segment output lines, 6 grid output lines, 5 segment/grid output drive lines, 4 LED output ports, a control circuit, a display memory, and a key scan circuit.

Serial data inputs to the HT16512 through a three-line serial interface. This VFD controller/driver is ideal as a peripheral device for an MCU.

Features

  • Logic voltage: 5V
  • High-voltage output: VDD-35V max.
  • Multiple display (11-segment & 11-digit to 16-segment & 6-digit)
  • 6x4 matrix key scanning
  • 8 steps dimmer circuit
  • 4 LED output ports
  • 4-bit general purpose input port
  • No external resistors necessary for driver output (provides PMOS open-drain and
    pull-low resistor output)
  • Serial interface with MCU (CLK, CS, DI,DO)
  • 44-pin QFP package

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