. General Description
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 consumption

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