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BU9795AFV Datasheet(PDF) 7 Page - Rohm

Part # BU9795AFV
Description  For 128-140 Segment type LCD LCD Segment Driver
Download  24 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BU9795AFV Datasheet(HTML) 7 Page - Rohm

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Recommendation circuit example (BU9728AKV)
Fig. BU9728AKV-11
When a contrast adjustment mechanism is used.
INPUT OUTPUT CIRCUIT (BU9728AKV)
Name
I/O
Circuit
Name
I/O
Circuit
SD
SCK
C
_____
/
____
D
_____
CS
__________
I
SEG0
SEG31
COM0
COM3
O
Name
I/O
Circuit
OSC1
OSC2
Name
I/O
Circuit
RESET
_______________________
I
Fig. BU9728AKV-14 INPUT OUTPUT circuit
VDD
GND
IN
OUT
VLCD
GND
VLCD
GND
VDD
GND
OSC1
VDD
GND
OSC2
VDD
GND
IN
VDD
5.0V
1MΩ
VSS
V3
V2
V1
VDD
1MΩ
1MΩ
The value (1MΩ) of the
built-in resistance value
inside the figure is
reference value. Value
varies according to
terms of manufacture
and so on.
It can use as a resistance for the
contrast adjustment when variable
resistance is given to the V3-VSS
space. The resistance of the outside
and resistance with built-in
BU9728AKV become the right
figures in this case.
The value of RC is to decide the
value which met a system referring
to the circuit of the right figure.
RC
GND


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