BL55024

BL55024 Shanghai Belling Corp., Ltd zip: 200233 Tel: 86-021-64850700 Fax: 86-021-64855865 LCD Driver for 60 Display Units BL55024 1 General Description The BL55024 is a general LCD driver IC for 60 units LCD panel. It features a wide operating supply voltage range, incorporates simple communication interface with microcomputer and is suitable for multiple application. 2 Features Advanced low power CMOS Technology Selection of 1/2 or 1/3 bias, selection of 1/2 or 1/3 or 1/4 duty. Operation voltage: 2.5~5.5V Serial data interface 60(15x4) Display Units Low power dissipation design: Power saving mode: Idd=14uA at 5V and Idd=9uA at 3.3V; On-chip RC oscillator VLCD for adjusting LCD operating voltage Excellent EMC immunity Compatible with general microcomputer SOP24 package 3 Pin Assignment 4 Pin Description Pin No. 1 2 3 4 5 6-9 10-24 Fig 1 Pin name SDA SCI Vdd Vss Vlcd Com0、Com2、Com1、Com3 S0——S14 Tab.1 Function Serial data input/output Serial clock input Supply voltage ground LCD supply voltage Common terminal driving output Segment terminal driving output 1 BL55024 zip: 200233 5 Function Description 1.function circuit Shanghai Belling Corp., Ltd Tel: 86-021-64850700 Fax: 86-021-64855865 The BL550024 has all function circuits that can directly drive any static or multiplexed LCD containing up to four commons and up to 15 segments. The function circuits include:Power-on reset, LCD bias generator, LCD voltage selector, Oscillator, display RAM, Timing, Display latch...