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LC75844M Scheda tecnica(PDF) 6 Page - Sanyo Semicon Device

Il numero della parte LC75844M
Spiegazioni elettronici  1/4-Duty General-Purpose LCD Display Driver
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Produttore elettronici  SANYO [Sanyo Semicon Device]
Homepage  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC75844M Scheda tecnica(HTML) 6 Page - Sanyo Semicon Device

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LC75844M
No.6235-6/15
Pin Functions
Symbol
Pin No.
Function
Active
I/O
Handling
when
unused
S1/P1 to S4/P4
S5 to S22
1 to 4
5 to 22
Segment outputs for displaying the display data transferred by serial data
input. The S1/P1 to S4/P4 pins can be used as general-purpose output ports
under serial data control.
-
O
OPEN
COM1 to COM4
23 to 26
Common driver outputs
The frame frequency (fo) is given by: fo=(fosc/512) Hz.
-
O
OPEN
OSC
32
Oscillator pin, which, together with externally connected resistor and
capacitor, makes up an oscillator circuit.
-
I/O
VDD
CE
CL
DI
34
35
36
Serial data transfer input pin to be connected to the controller.
CE: Chip enable
CL: Synchronization clock
DI: Transfer data
H
-
I
I
I
GND
INH
33
Display off input pin
• INH=”L” (VSS) ...
OFF
S1/P1 to S4/P4=”L” (VSS)
(Fixed to “L” after forced selection
of segment output port.)
S5 to S22=”L” (VSS)
COM1 to COM4=”L” (VSS)
• INH=”H” (VDD) ... ON
Note that the serial data can be transferred when OFF.
L
I
GND
VLCD1
29
Used for applying the LCD driver 2/3 bias voltage externally.
Must be connected to VLCD2 when a 1/2 bias scheme is used.
-
I
OPEN
VLCD2
30
Used for applying the LCD driver 1/3 bias voltage externally.
Must be connected to VLCD1 when a 1/2 bias scheme is used.
-
I
OPEN
VDD
27
Logic block power supply pin to provide a voltage between 2.7V to 6.0V.
-
-
-
VLCD
28
LCD driver power supply pin to provide a voltage between 2.7V to 6.0V.
-
-
-
VSS
31
Power supply pin to connect to ground.
-
-
-


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