Preliminary

TT1628 / TT1668

2014/9/10

Page：2/14

Ver.：2.3

. 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

.Pin Assignment

TT1628

TT1668