TT1628 是一种带键盘扫描接口的LED(发光二极管显示器)驱动控制专用电路,
内部集成有MCU 数字接口、数据锁存器、LED 高压驱动、键盘扫描等电路。本产品性能优良,质量可靠。主要应用于VCR、VCD、DVD 及家庭影院等产品的显示屏驱动。采用SOP28的封装形式。
工作电压范围:3V~5V
多种显示模式(10 段×7 位 ~ 13 段×4 位)
键扫描(10×2)
灰度调节电路(占空比 8级可调)
串行接口(CLK,STB,DIO)
振荡方式:内置RC 振荡(450KHz+5%)
TT1628(SOP 28) / TT1668(SOP
24) is an LED Controller driver
with key scan function . Ten
segment output lines, four grid output lines, Three
segment/grid output lines , display memory,
pulse width control circuit , key scan circuit , 3 wire
interface circuit are all incorporated into
a single chip to build a highly reliable peripheral device
for a single chip microcomputer.
Features
? Multiple Display
Modes (10 segment X 7 Grid to 13 segment X 4 Grid)
? Key Scanning (10 x
2 )
? 8 step Dimming
adjustment
? Build-in RC oscillator
? Serial interface
for clock, data Input/ output, strobe pins
? SOP28 package (TT1628) / SOP24 package(TT1668)
? CMOS technology
? Low power
consumptio