UPD16430A Datasheet | NEC

MOS INTEGRATED CIRCUIT µPD16430A 1/2, 1/3, 1/4 DUTY LCD CONTROLLER/DRIVER The µPD16430A is an LCD controller/driver that enables the display of LCDs of 1/2 duty, 1/3 duty and 1/4 duty cycle. The LCD controller contained in the µPD16430A employs serial data transfer and uses an automatic increment function for data addresses which eliminates the need to set addresses newly each time. The LCD driver uses a medium voltage output (14 V max.), which enables higher contrast and a wider viewing angle even with a 1/3 or 1/4 duty cycle. By using an on-chip drive bias circuit, it is possible to eliminate the need for external resistors. Features - LCD direct drive (medium voltage output: 14 V MAX.) - Choice of 3 duty cycles 1/2 duty, 1/3 duty, 1/4 duty - Display dot number: 1/2 duty: 120 1/3 duty: 160 1/4 duty: 240 - 2 types of drive bias 1/2 bias, 1/3 bias - Choice of 4 types of frame frequency - Multi-chip configuration possible - Control through 8-bit serial interface - On-chip power-on reset circuit - Low-power dissipation CMOS - 3.5 to 6.0 V logic supply voltage ORDERING INFORMATION Part number Package 80-pin plastic QFP (14 × 20) µPD16430AGF-3B9 Document No. IC-2776 (1st edition) (O.D. No. IC-8302) Date Published March 1997 N Printed in Japan © µPD16430A PIN CONFIGURATION (Top View) VDD LCDOFF BUSY CLK DATA STB SYNC VSS OSCOUT 80 7978 77 76 7574 73 72 7170 69 68 6766 65 LCD0 LCD1 LCD2 LCD3 LCD4 LCD5 LCD6 LCD7 LCD8 LCD9 LCD10 LCD11 LCD12 LCD13 LCD14 LCD15 LCD16 LCD17 LCD18 LCD19 LCD20 LCD21 LCD22 LCD23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 2627 28 29 3031 32 33 3435 36 37 3839 40 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 1 0 LCD59 LCD58 LCD57 LCD56 LCD55 LCD54 LCD53 LCD52 LCD51 LCD50 LCD49 LCD48 LCD47 LCD46 LCD45 LCD44 LCD43 LCD42 LCD41 LCD40 LCD39 LCD38 LCD24 LCD25 Remark Be sure to leave Pin 33 open since it is connected to the lead frame. LCD26 LCD27 LCD28 LCD29 LCD30 LCD31 NC VSS...