BU9796A 반도체 회로 부품 판매점
Standard LCD Segment Driver
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 ROHM Semiconductor |
Datasheet
Standard LCD Segment Driver
BU9796Axxx Series MAX 80 segments (SEG20×COM4)
●Features
Integrated RAM for display data (DDRAM):
20 x 4 bit (Max 80 Segment)
LCD drive output :
4 Common output, Max 20 Segment output
Integrated Buffer AMP for LCD driving
Integrated Oscillator circuit
No external components
Low power consumption design
●Applications
Telephone
FAX
Portable equipment (POS, ECR, PDA etc.)
DSC
DVC
Car audio
Home electrical appliance
Meter equipment
etc.
●Key Specifications
■ Supply Voltage Range:
+2.5V to +5.5V
■ Operating Temperature Range: -40°C to +85°C
■ Max Segments:
BU9796AFS
80 Segments
BU9796AMUV
48 Segments
Display Duty:
1/4
■ Bias:
1/2, 1/3 selectable
■ Interface:
2wire serial interface
●Package
W (Typ.) x D (Typ.) x H (Max.)
VQFN024V4040
4.00mm x 4.00mm x 1.00mm
SSOP-A32
13.60mm x 7.80mm x 2.01mm
●Typical Application Circuit
BU9796AFS
VDD
VDD
VLCD
Controller
SDA
SCL
OSCIN
TEST1
TEST2
VSS
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG19
Segment
LCD
Using internal oscillator
Figure 1. Typical application circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111･14･001
○This product is not designed protection against radioactive rays.
1/28
TSZ02201-0A2A0D300100-1-2
31.Aug.2012 Rev.001
Free Datasheet http://www.datasheet4u.com/
BU9796Axxx Series MAX 80 segments (SEG20×COM4)
●Block Diagram / Pin Configuration / Pin Description
BU9796AFS
VDD
VLCD
OSCIN
VSS
LCD voltage generator
COM0……COM3
SEG0…… SEG19
Common
driver
Segment
driver
＋
－ LCD
BIAS
SELECTOR
＋
－
Common
counter
Blink timing
generator
DDRAM
OSCILLATOR
Power On Reset
Command
register
Command
Data Decoder
Serial interface
IF FILTER
SDA
SCL
Datasheet
Figure 2. Block Diagram
Figure 3. Pin Configuration (TOP VIEW)
Terminal
TEST1
TEST2
OSCIN
SDA
Terminal No.
26
27
28
30
Table 1 Pin Description
I/O Function
I
Test input (ROHM use only)
Must be connect to VSS
Test input (ROHM use only)
I
TEST2=”L”: POR circuit enable
TEST2=”H”: POR circuit disenable,
refer to “Cautions in Power ON/OFF”
External clock input
I External clock and Internal clock can be selected by command.
Must be connect to VSS when use internal oscillation circuit.
I/O serial data in-out terminal
SCL
VSS
VDD
VLCD
SEG0-19
COM0-3
29
25
24
23
31,32
1-18
19-22
I serial data transfer clock
GND
Power supply
Power supply for LCD driving
O SEGMENT output for LCD driving
O COMMON output for LCD driving
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
2/28
TSZ02201-0A2A0D300100-1-2
31.Aug.2012 Rev.001
Free Datasheet http://www.datasheet4u.com/
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제조업체: ROHM Semiconductor
( rohm )
BU9796A driver
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
BU9796A
Standard LCD Segment Driver - ROHM Semiconductor
BU9796AFS
Standard LCD Segment Driver - ROHM Semiconductor
BU9796AMUV
Standard LCD Segment Driver - ROHM Semiconductor
BU9796Axxx
Standard LCD Segment Driver - ROHM Semiconductor
BU9796FS
Standard Segment Drivers - ROHM Semiconductor