HT16515 -- 1/4 to 1/12 Duty VFD Controller

General Description

HT16515 is a VFD (Vacuum Fluorescent Display) controller/driver that is driven on a 1/4 to 1/12 duty factor. It consists of 16 segment output lines, 4 grid output lines, 8 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 HT16515 through a three-line serial interface. This VFD controller/driver is an ideal MCU peripheral device.

Features

  • Logic voltage: 3.0V~5.5V
  • High-voltage output: VDD-35V max.
  • Multiple display (16-segment & 12-digit to 24-segment & 4-digit)
  • 16×2 matrix key scanning
  • 8 steps dimmer circuit
  • 4 LED output ports
  • No external resistors necessary for driver output (provides PMOS open-drain and pull-low resistor output)
  • Serial interface with MCU (CLK, CSB, DI, DO)
  • 44-pin QFP package

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