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