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BU97941FV Datasheet(PDF) 2 Page - Rohm

Part # BU97941FV
Description  Multifunction LCD Segment Driver
Download  27 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BU97941FV Datasheet(HTML) 2 Page - Rohm

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2/23
TSZ02201-0A0A2D300080-1-2
10.Apr.2015 Rev.004
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
BU97941FV
MAX 104 segments (SEG26×COM4)
Block Diagram / Pin Configuration / Pin Description
Figure 2. Block Diagram
Figure 3. Pin Configuration (TOP VIEW)
Table 1 Pin Description
Pin Name
Pin No.
I/O
Setting
when not in
use
Function
CSB
26
I
VDD
Chip select: "L" active
SCL
27
I
VSS
Serial data transfer clock
SD
28
I
VSS
Input serial data
VDD
29
-
-
Power supply for LOGIC
VSS
25
-
-
External clock input terminal (for display/PWM using
selectable)
Support Hi-Z input mode at internal clock mode
VLCD
30
-
-
GND
COM0 to 3
31 to 34
O
OPEN
Power supply for LCD
SEG0 to 25
1 to 20
35 to 40
O
OPEN
COMMON output for LCD
LED1 to 4
21 to 24
O
OPEN
LED driver output
common
counter
OSCILLATOR
LCD
BIAS
SELECTOR
common
driver
Power On Reset
SD
SCL/CLKIN
VSS
VSS
COM0……COM3
SEG0……SEG25
IF FILTER
serial inter face
DDRAM
LCD voltage
Generator
Command register
Data Decoder
VLCD
CSB
VDD
Segment
driver
LED
Driver
LED4...LED1
External clock line
LED4
LED3
LED2
LED1
VSS
CSB
SCL
SD
VDD
VLCD
COM3
COM2
COM1
COM0
SEG4
SEG3
SEG1
SEG0
SEG5
SEG9
SEG10
SEG11
SEG12
SEG7
SEG8
SEG15
SEG16
SEG17
SEG18
SEG13
SEG14
SEG19
SEG20
SEG23
SEG24
SEG25
SEG21
SEG22
SEG6
SEG2


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