Holtek's new released HT16512 VFD driver ICs

November 26, 1999

Holtek has released HT16512, high-voltage process ICs specifically designed as VFD (Vacuum Fluorescent Display) driver products. The VFD technology originates from Vacuum Tube concept and is often used as a display panel for A/V or other home appliances. Through commands received from a microcontroller, HT16512 ICs generate signals that can either turn on or turn off the corresponding patterns.

HT16512 has an operating voltage of 5V and the VFD input driving voltage can be up to VDD-30V. A 3-wire serial interface circuit is equipped to interface with a microcontroller. Through software commands, a variety of modes from 4-grid / 11-segment to 11-grid / 11-segment display mode is available to accommodate the different kinds of VFD devices. By software control encompassing 1/4 to 1/11 duty cycle, an 8-step brightness control can also be achieved. On top of that, some of its additional features are; 6x4 key scan circuit, 4-bit general purpose input ports and 4-bit LED latch output ports.

With the successful release of HT16512 VFD driver ICs, Holtek further expands its LCD driver product range and offer customers with a variety of high quality display solutions.