BU97950FUV Datasheet, PDF (2/25 Pages) Rohm – Standard LCD Segment Drivers

BU97950FUV MAX 280 segments (SEG35×COM8)
●Block Diagrams / Pin Configurations / Pin Descriptions
BU97950FUV (TSSOP-C48V)
VLCD
VSS
LCD voltage generator
＋
－
＋
－
＋
－
＋
－
LCD
BIAS
SELECTOR
COM0……COM7
SEG0……SEG34
common
driver
Segment
driver
common
counter
DDRAM
VDD
OSCILLATOR
Power On Reset
Command
register
Command
Data Decoder
serial inter face
IF FILTER
SDA
SCL
VDD
VLCD
VSS
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
SDA
SCL
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
Figure 2. Block Diagram
Figure 3. Pin Configuration (TOP VIEW)
Table 1 Pin Description
Terminal
SDA
Terminal No. I/O
48
I/O Serial data input
Function
SCL
47
I Serial data transfer clock
VSS
3
I GND
VDD
1
I Power supply
VLCD
SEG0 to 35
COM0 to 7
2
4 to 24
33 to 46
25 to 32
I Power supply for LCD drive
O SEGMENT output for LCD drive
O COMMON output for LCD drive
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08.Sep.2015 Rev.004