HT16511 -- 1/8 to 1/16 Duty VFD Controller

General Description

HT16511 is a VFD (Vacuum Fluorescent Display) controller/driver that is driven on a 1/8 to 1/16 duty factor. It consists of 12 segment output lines, 8 grid output lines, 8 segment/grid output drive lines, 5 LED output ports, a control circuit, a display memory, and a key scan circuit.

Serial data inputs to the HT16511 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 (12-segment & 16-digit to 20-segment & 8-digit)
  • 12x4 matrix key scanning
  • 8 steps dimmer circuit
  • 5 LED output ports (20mA max.)
  • 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, CSB, DI, DO)
  • 52-pin QFP package

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