Holtek HT16515真空荧光显示屏控制方案

Holtek 公司的HT16515是真空荧光显示屏(VFD)控制器/驱动器,包括有16段输出线,4个栅输出线,8个段/栅输出驱动线,4个LED输出端口,控制电路,显示存储器以及扫描电路. HT16515逻辑电压3.0V-5.5V,高她输出最大为35V,可用于消费类电子屏功能控制,工业测量仪表屏功能控制以及其它相似屏功能控制.本文介绍了HT16515的主要特性和方框图,以及典型应用电路图.

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

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.

HT16515主要特性:

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, CS, DI, DO)

44-pin QFP package

HT16515应用:

Consumer products panel function control

Industrial measuring instrument panel function control

Other similar applications for panel function control

图1.HT16515方框图

图2.HT16515典型应用电路图