KK472 Datasheet | Kodenshi AUK Group

.. TECHNICAL DATA Liquid Crystal Display Controller 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 patible with all COP400 processors Needs no refresh from processor On-chip oscillator and latches Expandable to longer displays Software patible with COP470 V.F.Display Driver Chip Operates from display voltage MICROWIRETM patible 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 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 Description .. DC ELECTRICAL CHARACTERISTICS (GND=0 V, VDD=3.0 V to 5.5 V, TA= 0°C to 70°C (depends on display characteristics) Guaranteed Limit Symbol VDD IDD VIL VIH VIL VIH VOL VOH VBPA,BPB,BPC ON VBPA,BPB,BPC OFF VBPA,BPB,BPC ON VBPA,BPB,BPC OFF VSEG ON VSEG OFF VSEG ON VSEG OFF Internal Oscillator Frequency Frame Time (Int. Osc. ÷ 192) 1/TSCAN Scan Frequency SK Clock Frequency SK Width t SETUP t HOLD t SETUP t HOLD Output Loading Capacitance Note 2: ∆V - 0.05VDD. DI Data Stup DI Data Hold CS Segment Outputs (SA1 ∼ SA4) Segment Outputs (SA1 ∼ SA4) Backplane Outputs...