BU9910KV

Multimedia ICs Status display LCD driver for PCs with I2C Bus interface BU9910KV The BU9910KV is a status LCD driver with I2C Bus intetface. Various lighting mode can be controlled through I2C Bus. In addition, 20 direct drive inputs allow the application to drive 20 elements directly without I2C Bus, so that the system configuration can be kept simple. Applications PCs Features 1) I C Bus interface. 2 2) Drive up to 44 LCD cells. 4 common × 11 segment, 1 / 3 bias, 1 / 4 duty 3) Blink operation for eaeh cell. 4) Support four frame frequencies 256Hz, 128Hz, 64Hz, 32Hz (at fOSC = 32.768kHz) 5) 20 direct drive inputs, which allow the application to drive LCD directly without I2C control. 6) Minimum LCD drive time is guaranteed for direct in. 7) LCD device test ferminals.(LCDT0, LCDT1) 8)Power aupply voltages: 3.3V to 5.0V 1 Multimedia ICs BU9910KV Block diagram DIN19 DIN18 DIN17 DIN16 DIN15 DIN14 DIN13 DIN12 DIN11 DIN10 DIN9 36 35 34 33 32 31 30 29 28 27 26 DIN8 25 SEG10 37 Date Latch Logic 24 DIN7 SEG9 38 23 DIN6 SEG8 39 Control Logic 22 DIN5 SEG7 40 21 DIN4 SEG6 41 I2CBus Interface 20 DIN3 SEG5 42 Segment Driver 19 DIN2 SEG4 43 Timing Generator 18 DIN1 SEG3 44 17 DIN0 SEG2 45 Common Driver 16 HT1 SEG1 46 15 HT0 SEG0 47 14 LCDT1 VDD 48 13 LCDT0 1 2 3 4 5 6 7 8 9 10 11 12 COM3 COM2 COM1 COM0 #RES GND SDA 2 SCL CLK VL3 VL2 VL1 Multimedia ICs BU9910KV Pin descriptions Pin No. 1 2 3 4 5 6 7 ...