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LC75878W データシート(PDF) 6 Page - Sanyo Semicon Device

部品番号 LC75878W
部品情報  General-Purpose LCD Display Driver
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メーカー  SANYO [Sanyo Semicon Device]
ホームページ  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC75878W データシート(HTML) 6 Page - Sanyo Semicon Device

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LC75878W
No.6473-6/35
Pin Functions
Symbol
Pin No.
Function
Active
I/O
Handling
when
unused
S1 to S73
S74/COM10
S75/COM9
1 to 73
74
75
Segment driver outputs.
The S74/COM10 and S75/COM9 pins can be used as common driver outputs under
the control data.
-
O
OPEN
COM1 to
COM8
83 to 76
Common driver outputs.
-
O
OPEN
P1 to P4
84 to 87
General-purpose output ports.
-
O
OPEN
OSC
96
Oscillator connection.
An oscillator circuit is formed by connecting an external resistor and capacitor at
this pin.
-
I/O
VDD
CE
98
H
I
CL
99
I
DI
100
Serial data transfer inputs.
These pins are connected to the microcontroller.
CE: Chip enable
CL: Synchronization clock
DI: Transfer data
-
I
GND
INH
97
Input that turns the display off and forces the general-purpose output ports low.
• When INH is low (VSS)
• Display off
S1 to S73 = “L” (VLCD4).
S74/COM10, S75/COM9 = “L” (VLCD4)
COM1 to COM8 = “L” (VLCD4).
• General-purpose output ports P1 to P4 = low (VSS)
• When INH is high (VDD)
• Display on
• The states of the general-purpose output ports can be set by
the PC1 to PC4 control data.
However, serial data can be transferred when the INH pin is low.
L
I
GND
VLCD0
90
LCD drive 4/4 bias voltage (high level) supply pin. The level on this pin can be
changed by the display contrast adjustment circuit.
However, (VLCD0 - VLCD4) must be greater than or equal to 4.5V.
Also, external power must not be applied to this pin since the pin circuit includes the
display contrast adjustment circuit.
-
O
OPEN
VLCD1
91
LCD drive 3/4 bias voltage (middle level) supply pin. This pin can be used to supply
the 3/4 (VLCD0 - VLCD4) voltage level externally.
-
I
OPEN
VLCD2
92
LCD drive 2/4 bias voltage (middle level) supply pin. This pin can be used to supply
the 2/4 (VLCD0 - VLCD4) voltage level externally.
-
I
OPEN
VLCD3
93
LCD drive 1/4 bias voltage (middle level) supply pin. This pin can be used to supply
the 1/4 (VLCD0 - VLCD4) voltage level externally.
-
I
OPEN
VLCD4
94
LCD drive 0/4 bias voltage (low level) supply pin. Fine adjustment of the display
contrast can be implemented by connecting an external variable resistor to this pin.
However, (VLCD0 - VLCD4) must be greater than or equal to 4.5V, and VLCD4
must be in the range 0 V to 1.5V, inclusive.
-
I
GND
VDD
88
Logic block power supply connection. Provide a voltage of between 2.7 and 6.0V.
-
-
-
VLCD
89
LCD driver block power supply connection. Provide a voltage of between 7.0 and
11.0V when the display contrast adjustment circuit is used and provide a voltage of
between 4.5 and 11.0V when the circuit is not used.
-
-
-
VSS
95
Power supply connection. Connect to ground.
-
-
-


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