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BL55024

BELLING
Part Number BL55024
Manufacturer BELLING
Description LCD Driver
Published Jul 18, 2015
Detailed Description BL55024 Shanghai Belling Corp., Ltd zip: 200233 Tel: 86-021-64850700 Fax: 86-021-64855865 LCD Driver for 60 Display Un...
Datasheet PDF File BL55024 PDF File

BL55024
BL55024

Overview
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, Shift register, Common/segment outputs, input/output bank selector, Blinker, Data pointer, etc.
2.
display function decription The display RAM is a static 15x 4-bit RAM which stores LCD data.
A logic 1 in the RAM bit-map indicates the on state of the corresponding LCD segment; similarly, a logic 0 indicates the off state.
There is a one-to-one correspondence between the RAM addresses and the segment outputs, and between the individual bits of a RAM word and the common outputs.
(see Fig.
2).
Di...


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