LED驱动IC TT1668 SOP24

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
? SOP24 package(TT1668)
?  CMOS technology
?  Low power consumptio