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PDF BU97950FUV Data sheet ( Hoja de datos )
| Número de pieza | BU97950FUV | |
| Descripción | Standard LCD Segment Driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Standard LCD Segment Drivers
BU97950FUV MAX 280 segments (SEG35×COM8)
●Features
Integrated RAM for display data (DDRAM):
35 x 8bit (Max 280 Segment)
LCD drive output:
8 Common output, 35 Segment output
Integrated Buffer AMP for LCD driving
Integrated Oscillator circuit
No external components
Low power consumption design
Independent power supply for LCD driving
Integrated Electrical volume register (EVR) function
●Key Specifications
■ Supply Voltage Range:
+2.5V to +5.5V
■ LCD drive power supply Range: +2.5V to +5.5V
■ Operating Temperature Range: -40°C to +85°C
■ Max Segments:
280 Segments
■ Display Duty:
1/8
■ Bias:
1/4
■ Interface:
2wire serial interface
●Packages
W (Typ.) x D (Typ.) x H (Max.)
●Applications
Telephone
FAX
Portable equipment (POS, ECR, PDA etc.)
DSC
DVC
Car audio
Home electrical appliance
Meter equipment
etc.
TSSOP-C48V
8.1mm x 12.5mm x 1.0mm
●Typical Application Circuit
VLCD
Controller
VDD
VDD
VLCD
SD
SCL
COM0
COM7
SEG0
SEG1
Segment
LCD
VSS
SEG34
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･14･001
○This product is not designed for protection against radioactive rays.
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TSZ02201-0A0A2D300090-1-2
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1 page  
BU97950FUV MAX 280 segments (SEG35×COM8)
●I/O equivalent circuit
VDD
VLCD
VSS
VSS
SDA
SCL
VSS
VLCD
SEG/COM
VSS
VSS
Figure 5. I/O Equivalent Circuit
●Example of Recommended Circuit
VLCD
Controller
VDD
VDD
VLCD
SD
SCL
COM0
COM7
SEG0
SEG1
Segment
LCD
VSS
SEG34
Figure 6. Example of Recommended Circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
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TSZ02201-0A0A2D300090-1-2
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5 Page 
BU97950FUV MAX 280 segments (SEG35×COM8)
○Display control (DISCTL)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C １ １ ０ P3 P2 P1 P0
Set Power save mode FR.
Power save mode FR
Normal mode (80Hz)
Power save mode1 (71Hz)
Power save mode2 (64Hz)
Power save mode3 (50Hz)
P３ P２
00
01
10
11
Reset initialize condition
○
＊Operation current decrease in
Normal mode > Power save mode1 > Power save mode2 > Power save mode 3 order.
Set Power save mode SR.
Setup
Power save mode 1
Power save mode 2
Normal mode
High power mode
P1 P0
00
01
10
11
Reset initialize condition
○
＊Operation current increase in order of
Power save mode 1 < Power save mode 2 < Normal mode < High power mode order.
Note:
Power save mode FR / LCD drive waveform / Power save mode SR will affect the display image.
Select the best value depending on the current consumption and display image using LCD panel
(under real application).
Mode
Power save mode FR
LCD drive waveform (ICSET)
Power save mode SR
Flicker
○
○
-
Display grade/Contrast
-
○
○
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
11/21
TSZ02201-0A0A2D300090-1-2
08.Sep.2015 Rev.004
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet BU97950FUV.PDF ] | |
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