CT6523

1/3 Duty General Purpose LCD Driver IC CT6523 DESCRIPTION CT6523 is an LCD Driver IC which can drive up to 156 segments. It can be used for frequency display in microprocessor-controlled radio receiver and in other display applications. CT6523 supports both 1/2 bias, 1/3 duty and 1/3 duty, 1/3 bias. Pin assignments and application circuit are optimized for easy PCB layout and cost saving advantages. FEATURES Up to 156 Segments Outputs 1/3 Duty - 1/2 Bias and 1/3 Duty - 1/3 Bias Drive Techniques Power Saving Mode and all Segments OFF Function Direct Display of Display Data without using a Decoder RC Oscillation Circuit Power Supply Voltage: 4.5 to 6V LCD Drive Bias Voltage can be provided internally or externally Available in 64 pins, QFP or LQFP APPLICATIONS Electronic Dictionary / Translator P.O.S. Caller ID Pager Mini Compo Electronic Equipment with LCD Display CT6523 V1.0 -1- June, 2006 1/3 Duty General Purpose LCD Driver IC BLOCK DIAGRAM COM1 COM2 COM3 SG52 CT6523 SG5 SG4 SG3 SG2 SG1 VDD1 VDD2 /INH COMMON DRIVER SEGMENT DRIVER & LATCH OSC DI CLK CE VDD VSS CLOCK GENERATOR ADDRESS DETECTOR SHIFT REGISTER CT6523 V1.0 -2- June, 2006 1/3 Duty General Purpose LCD Driver IC CT6523 INPUT/OUTPUT CONFIGURATIONS The schematic diagrams of the input and output circuits of the logic section are shown below: INPUT PIN: CLK, CE, DI VDD V SS OUTPUT PIN: COM1 TO COM3, SG1 TO SG52 VDD VDD1 VSS VDD2 CT6523 V1.0 -3- June, 2006 48 47 4...