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PDF KK472 Data sheet ( Hoja de datos )

Número de pieza KK472
Descripción Liquid Crystal Display Controller
Fabricantes KODENSHI KOREA　
Logotipo KODENSHI KOREA Logotipo



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TECHNICAL DATA
Liquid Crystal Display Controller
KK472
The KK472 Liquid Crystal Display (LDC) Controller is a perpheral
member of the COPSTM family, fabricated using CMOS technology. The
KK472 drives a multiplexed liquid crystal directly. Data is loaded serially
and is held in internal latches. The KK472 contains an on-chip oscillator and
generates all the multi-level waveforms for back-planes and segment
outputs on a triplex display. One KK472 can drive 36 segments multiplexed
as 3 x 12 (41/2 digit display). Two KK472 devices can be used together to
drive 72 segments (3 x 24) which could be an 81/2 digit display.
• Direct interface to TRIPLEX LCD
• Low power dissipation (100 µW typ.)
• Low cost
• Compatible with all COP400 processors
• Needs no refresh from processor
• On-chip oscillator and latches
• Expandable to longer displays
• Software compatible with COP470 V.F.Display Driver Chip
• Operates from display voltage
• MICROWIRETM compatible serial I/O
• 20-pin Dual-In-Line package
ORDERING INFORMATION
KK472N Plastic
KK472DW SOIC
TA = 0° to 70° C for all packages
PIN ASSIGNMENT
Pin Description
Pin
CS
VDD
GND
DI
SK
BPA
BPB
BPC
SA1∼SA4
Description
Chip select
Power supply (display voltage)
Ground
Serial data input
Serial clock input
Display backplane A (or oscillator in)
Display backplane B
Display backplane C (or oscillator out)
12 multiplexed outputs
1

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