w as 3 x 12 (4 / digit display). Two IN472 devices can be used together to
1
h S aLiquid Crystal Display (LDC) Controll...
w as 3 x 12 (4 / digit display). Two IN472 devices can be used together to
1
h S aLiquid Crystal Display (LDC) Controller is a perpheral The IN472 t member of athe COPS family, fabricated using
CMOS technology. The IN472 D drives a multiplexed liquid crystal directly. Data is loaded serially and is. in internal latches. The IN472 contains an on-chip oscillator and w heldall generates the multi-level waveforms for back-planes and segment w outputs on a triplex display. One IN472 can drive 36 segments multiplexed
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Liquid Crystal ee Display Controller
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TECHNICAL DATA
IN472
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
2
Pin Description
Pin CS VDD GND DI SK Chip select
BPA BPB BPC
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w
Power supply (display
voltage) Ground
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S a
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ORDERING INFORMATION IN472N Plastic IN472DW SOIC TA = 0° to 70° C for all packages
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PIN ASSIGNMENT
Description
Serial data input Serial clock input Display backplane A (or oscillator in) Display backplane B Display backplane C (or oscillator out) 12 multiplexed outputs
SA1∼SA4
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w
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a
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e ...
