BL55080 Datasheet, PDF (1/1 Pages) SHANGHAI BELLING CO., LTD. – LCD Driver for 280 Display Units

BL55080
LCD Driver for 280 Display Units BL55080
(SEG35*COM8)
General Description
The BL55080 is a peripheral device, which interfaces to almost any Liquid
Crystal Display (LCD) having low multiplex rates. It generates the drive signals for
any static or multiplexed LCD containing up to 8 back planes and up to 35 segments.
The BL55080 is compatible with most microprocessors/micro controllers and
communicates via a two-line bi-directional IIC -bus.
Features
LCD drive output: 8 Common output, 35 Segment output
35×8=280-bit RAM for display data storage
2 wire serial interface(IIC-bus)
Integrated Oscillator circuit
Integrated Buffer AMP for LCD driving, 1/4 Bias, 1/8 Duty
No external components required
Low power consumption
Integrated Electrical volume register(EVR) function
2.5 to 5.5V power supply range
2.5 to 5.5V LCD drive power supply range
Packages: TSSOP48, LQFP48, LQFP52
Application
Telephone, Power meter, Toy, Portable equipment, Car audio…
PIN Description
TSSOP48
48
47
1
2
3
4-24
33-46
25-32
PIN No
LQFP52
20
19
21
22
23
3-11
14-18
24-27
29-52
2,46-52
1,12,13,28
LQFP48
18
17
19
20
21
3-16
22-42
1-2
43-48
PIN Name
SDA
SCL
Vdd
Vlcd
Vss
SEG0-34
COM0-7
NC
Function
Serial data input
Serial data transfer clock
Power supply
LCD drive power supply
GND
Segment output
COM output
Not connected
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