FD650 datasheet(1/7 Pages) ETC2

Part #	FD650

Description	LED drive control/keyboard scanning ASIC FD650

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集成电路 FD650

1

LED驱动控制/键盘扫描专用集成电路FD650

一、概述

FD650是一种带键盘扫描电路接口的LED驱动控制专用电路。内部集成有MCU输入

输出控制数字接口、数据锁存器、LED驱动、键盘扫描、辉度调节等电路。本芯片性

能稳定、质量可靠、抗干扰能力强，可适应于24小时长期连续工作的应用场合。

二、特性说明

• 显示模式：8段×4位

• 段驱动电流不小于25mA，字驱动电流不小于150mA

• 提供8级亮度控制

• 键盘扫描：7×4bit

• 高速两线式串行接口

• 内置时钟振荡电路

• 内置上电复位电路

• 支持3V－5.5V电源电压

• 提供DIP16（FD650K）及SOP16(FD650S)封装

三、管脚定义

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