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BL55077

BELLING
Part Number BL55077
Manufacturer BELLING
Description LCD Driver
Published Jul 18, 2015
Detailed Description BL55077 Shanghai Belling Corp., Ltd zip: 200233 Tel: 86-021-64850700 Fax: 86-021-64855865 LCD Driver for 160 Display U...
Datasheet PDF File BL55077 PDF File

BL55077
BL55077

Overview
BL55077 Shanghai Belling Corp.
, Ltd zip: 200233 Tel: 86-021-64850700 Fax: 86-021-64855865 LCD Driver for 160 Display Units BL55077 1 General Description The BL55077 is a general LCD driver IC for 160 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 160(40x4) Display Units Low power dissipation design: Power saving mode: Idd=14uA at 5V and Idd=9uA at 3.
3V; Sleeping mode: Idd<2uA Maybe cascaded up to 16PCs for large LCD applications On-chip RC oscillator VLCD for adjusting LCD operating voltage Excellent EMC immunity Compatible with general microcomputer 3 Pin Assignment Fig 1 1 Shanghai Belling Corp.
, Ltd BL55077 zip: 200233 Tel: 86-021-64850700 Fax: 86-021-64855865 4 Pin Description Pin No.
Pin name Function 10 SDA Serial data input/output 11 SCI Serial clock input 12 SYNC Cascade synchronization clock 13 CLK External clock input 14 Vdd Supply voltage 15 16-18 OSC A0、A1、A2 Oscillator input Subaddress inputs 19 20 21 25-28 29-32、34-37、49-64、2-7 SA0 Vss Vlcd Com0、Com2、Com1、Com3 S0——S39 Slave address input;bit0 ground LCD supply voltage Common terminal driving output Segment terminal driving output 1、8、9、22、23、24、33、48 NC Unused Tab.
1 5 Function Description 1.
function circuit The BL550077 has all function circuits that can directly drive any static or multiplexed LCD containing up to four commons and up to 40 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, Subaddress counter,etc.
2.
display function decription The display RAM is a static 40x 4-bit RAM which stores...


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