Holtek HT16515真空熒光顯示屏控制方案

Holtek 公司的HT16515是真空熒光顯示屏(VFD)控制器/驅(qū)動(dòng)器,包括有16段輸出線,4個(gè)柵輸出線,8個(gè)段/柵輸出驅(qū)動(dòng)線,4個(gè)LED輸出端口,控制電路,顯示存儲(chǔ)器以及掃描電路. HT16515邏輯電壓3.0V-5.5V,高她輸出最大為35V,可用于消費(fèi)類(lèi)電子屏功能控制,工業(yè)測(cè)量?jī)x表屏功能控制以及其它相似屏功能控制.本文介紹了HT16515的主要特性和方框圖,以及典型應(yīng)用電路圖.

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應(yīng)用:

Consumer products panel function control

Industrial measuring instrument panel function control

Other similar applications for panel function control

圖1.HT16515方框圖

圖2.HT16515典型應(yīng)用電路圖