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BU9795AGUW 데이터시트 PDF




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부품번호 BU9795AGUW 기능
기능 Standard Segment Drivers
제조업체 ROHM Semiconductor
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BU9795AGUW 데이터시트, 핀배열, 회로
Datasheet
Standard LCD Segment Drivers
BU9795Axxx Series MAX 140 segments (SEG35×COM4)
Features
„ Integrated RAM for display data (DDRAM) :
35 × 4bit (Max 140 Segment)
„ LCD drive output :
4 Common output, Max 35Segment 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:
BU9795AKV
140 Segments
BU9795AFV
108 Segments
BU9795AGUW
124 Segments
BU9795AKS2
140 Segments
Display Duty:
1/4
Bias:
1/2, 1/3 selectable
Interface:
3wire serial interface
Packages
W (Typ.) x D (Typ.) x H (Max.)
VQFP48C
9.00mm x 9.00mm x 1.60mm
VBGA048W040
4.00mm x 4.00mm x 0.90mm
Typical Application Circuit
VDD
SSOP-B40
SQFP-T52M
13.60mm x 7.80mm x 2.00mm 12.00mm x 12.00mm x 1.40mm
Controller
VDD
VLCD
INHb
CSB
SD
SCL
OSCIN
TEST
VSS
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG34
Segment
LCD
Internal oscillator circuit mode
Figure 1. Typical application circuit
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed for protection against radioactive rays.
1/36
TSZ02201-0A0A2D300020-1-2
8.Jan.2013 Rev.003




BU9795AGUW pdf, 반도체, 판매, 대치품
BU9795Axxx Series MAX 140 segments (SEG35×COM4)
Block Diagrams / Pin Configurations / Pin Descriptions - continued
Datasheet
BU9795AGUW
VDD
VLCD
INHb
OSCIN
VSS
LCD voltage generator
COM0…… COM3
SEG0 SEG32
Common
driver
Segment
driver
LCD BIAS
SELECTOR
Common Blink timing
counter
generator
DDRAM
OSCILLATOR
Power On Reset
Command
register
Command
Data Decoder
Serial inter face
IF FILTER
TEST
CSB
Figure 6. Block Diagram
SD
SCL
1234567
G (NC) SEG13 SEG15 SEG18 SEG20 SEG22 (NC)
F SEG11 SEG12 SEG16 SEG17 SEG21 SEG23 SEG24
E SEG9 SEG10 SEG14 SEG19 SEG25 SEG27 SEG26
D SEG7 SEG6 SEG8 SEG5 SEG30 SEG28 SEG29
C SEG4 SEG3 SEG2 CSB COM3 SEG32 SEG31
B
INHb SD
VSS VDD COM1 COM0
A (NC) TEST2 SCL OSCIN VLCD COM2 (NC)
Figure 7. Pin Configuration (BOTTOM VIEW)
Pin name
INHb
TEST
OSCIN
SD
SCL
CSB
VSS
VDD
VLCD
SEG2 to 32
COM0 to 3
Table 3 Pin Description
I/O Function
I
Input terminal for turn off display
H : turn on display L : turn off display
I
Test input (ROHM use only)
Must be connected to VSS
External clock input
I Ex clock and Int clock can be changed by command.
Must be connected to VSS when using internal oscillation circuit.
I Serial data input
I Serial data transfer clock
I Chip select : ”L” active
GND
Power supply
I Power supply for LCD driving
O SEGMENT output for LCD driving
O COMMON output for LCD driving
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/36
TSZ02201-0A0A2D300020-1-2
8.Jan.2013 Rev.003

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BU9795AGUW 전자부품, 판매, 대치품
BU9795Axxx Series MAX 140 segments (SEG35×COM4)
Datasheet
Electrical Characteristics - continued
Oscillation Characteristics (VDD=2.5V to 5.5V,VSS=0V, Ta=-40°C to +85°C)
Parameter
Symbol
MIN
Limits
TYP
Unit
MAX
Frame frequency
fCLK 56
80 104 Hz
Frame frequency1
fCLK1
70
80
90 Hz
Conditions
FR = 80Hz setting
VDD=3.5V, 25°C
MPU interface Characteristics(VDD=2.5V to 5.5V,VSS=0V, Ta=-40°C to +85°C)
Parameter
Symbol
MIN
Limits
TYP
Unit
MAX
Input rise time
tr -
- 80 ns
Input fall time
tf -
- 80 ns
SCL cycle time
tSCYC 400
-
- ns
“H” SCL pulse width
tSHW 100
-
- ns
“L” SCL pulse width
tSLW 100
-
- ns
SD setup time
tSDS
20
-
- ns
SD hold time
tSDH 50
-
- ns
CSB setup time
tCSS
50
-
- ns
CSB hold time
tCSH 50
-
- ns
“H” CSB pulse width
tCHW 50
-
- ns
Conditions
tCHW
CSB
SCL
tCSS
tf
tSLW
tSCYC
tSHW
tSDS tSDH
tr
tCSH
SD
I/O equivalent circuit
VDD
VLCD
VSS
Figure 10. Interface Timing
VDD
TEST
VSS
VDD
CSB, SD, SCL
VSS
VDD
OSCIN
VSS
VDD
INHb
VSS
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
VDD
VSS
Figure 11. I/O equivalent circuit
7/36
TSZ02201-0A0A2D300020-1-2
8.Jan.2013 Rev.003

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부품번호상세설명 및 기능제조사
BU9795AGUW

Standard LCD Segment Driver

ROHM Semiconductor
ROHM Semiconductor
BU9795AGUW

Standard Segment Drivers

ROHM Semiconductor
ROHM Semiconductor

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