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부품번호 | BU9795AKV 기능 |
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기능 | Standard Segment Drivers | ||
제조업체 | ROHM Semiconductor | ||
로고 | |||
전체 30 페이지수
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
SE・G1
・
・
・
SEG34
Segment
LCD
・
・
・
Internal oscillator circuit mode
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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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.
TSZ22111・15・001
4/36
TSZ02201-0A0A2D300020-1-2
8.Jan.2013 Rev.003
4페이지 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.
TSZ22111・15・001
VDD
VSS
Figure 11. I/O equivalent circuit
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TSZ02201-0A0A2D300020-1-2
8.Jan.2013 Rev.003
7페이지 | |||
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
BU9795AKS2 | Standard LCD Segment Driver | ROHM Semiconductor |
BU9795AKV | Standard Segment Drivers | ROHM Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |