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PDF BL55028 Data sheet ( Hoja de datos )
| Número de pieza | BL55028 | |
| Descripción | LCD Driver | |
| Fabricantes | BELLING | |
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BL55028
Shanghai Belling Corp., Ltd
zip: 200233 Tel: 86-021-64850700 Fax: 86-021-64855865
LCD Driver for 76 Display Units BL55028
1 General Description
The BL55028 is a general LCD driver IC for 76 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
76(19x4) 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
SOP28 package
3 Pin Assignment
S18
SDA
SCL
VDD
VSS
VLCD
BP0
BP2
BP1
BP3
S0
S1
S2
S3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 S17
27 S16
26 S15
25 S14
24 S13
23 S12
22 S11
21 S10
20 S9
19 S8
18 S7
17 S6
16 S5
15 S4
Fig 1
1
1 page  
BL55028
Shanghai Belling Corp., Ltd
zip: 200233 Tel: 86-021-64850700 Fax: 86-021-64855865
6 Absolute Maximum Rating
Parameter
Supply voltage
LCD operating voltage
Input voltage
Symbol
Vdd
Vlcd
Vi
Rating
-0.5～+6.0
0～ Vdd
Vss-0.5～Vdd+0.5
Unit
V
V
V
Output voltage
Vdd,Vss,Vlcd current
Vo
Idd,Iss,Ilcd
Vlcd-0.5～Vdd+0.5
-50～+50
V
mA
Maximum power consumption
Operating temperature
Storage temperature
Ptot
Topr
Tstg
400
-40～ +75
-65～ +150
mW
oC
oC
7 DC Characteristic
Symbol Parameter
Test Condition
Vdd
Vlcd
Idd1
Idd2
Idd3
Idd4
ViL
IC Operating
voltage
LCD operating
voltage
Supply current
Supply current
Supply current
Supply current
Low voltage input
Vdd=5V,VLCD=0V,Normal
mode,internal oscillator
Vdd=5V,VLCD=0V,power saving
mode,internal oscillator
Vdd=3.3V,VLCD=0V,Normal
mode,internal oscillator
Vdd=3.3V,VLCD=0V,power saving
mode,internal oscillator
SDA,SCL
ViH High voltage
input
SDA,SCL
Min
2.5
0
-
-
-
-
Vss
0.7Vdd
Typ
-
-
25
14
16
9
-
-
Max
5.5
Unit
V
Vdd-2
V
50 uA
30 uA
30 uA
15 uA
0.3Vdd
6.0
V
V
8 AC Characteristic
Symbol Parameter
Test Condition
Ta=25oC
Min Typ Max Unit
Fclk Oscillator
Vdd=5V,normal mode
125
180
300
KHz
frequency
Fclk Oscillator
Vdd=3.3V, power saving 21 31 48 KHz
frequency
mode
Tclk Half oscillator cycle
1 - 3 uA
Tsh1
CS start hold time
5-
us
Tsh2
tlow
SCL start hold time
High time
5-
5-
us
us
thig Low time
4-
us
thd SCL hold time
250 ns
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet BL55028.PDF ] | |
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