LC75810E Просмотр технического описания (PDF) - ON Semiconductor
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LC75810E Datasheet PDF : 54 Pages
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Pin Functions
LC75810E/T
Pin No.
Pin
LC75810E LC75810T
Function
Active
level
I/O
Handling
when
unused
S1 to S78
S79/COM10
S80/COM9
3 to 80
81
82
1 to 78 Segment driver outputs
79
The S79/COM10 and S80/COM9 pins can be used as common
−
80
driver outputs under the “set display technique” instruction.
O
OPEN
COM1 to COM8
90 to 83
88 to 81 Common driver outputs
−
O
OPEN
OSC
98
96
Oscillator connection. An oscillator circuit is formed by connecting
an external resistor and capacitor at this pin.
−
I/O
VDD
CE
100
98
Serial data transfer inputs. These pins are connected to the
H
I
microcontroller.
CL
1
99
CE: Chip enable
CL: Synchronization clock
I
GND
DI
2
100
DI: Transfer data
−
I
RES
VLCD0
VLCD1
VLCD2
VLCD3
VDD
VLCD
VSS
Reset signal input
• When RES is low (VSS)
− Display off
S1 to S78 = “L” (VSS)
S79/COM10 and S80/COM9 = “L” (VSS)
COM1 to COM8 = “L” (VSS)
99
97
− Serial data transfer is disabled.
L
I
GND
− The OSC pin oscillator is stopped.
• When RES is high (VDD)
− Display on after a “display on/off control” (display on state
setting) instruction is executed.
− Serial data transfers are enabled.
− The OSC pin oscillator operates.
LCD drive 4/4 bias voltage (high level) supply pin. The level on
this pin can be changed by the display contrast adjustment circuit.
93
91
However, VLCD0 must be greater than or equal to 4.5 V. Also,
−
O
OPEN
external power must not be applied to this pin since the pin circuit
includes the display contrast adjustment circuit.
94
92
LCD drive 3/4 bias voltage (middle level) supply pin. This pin can
be used to supply the 3/4 VLCD0 voltage level externally.
−
I
OPEN
95
93
LCD drive 2/4 bias voltage (middle level) supply pin. This pin can
be used to supply the 2/4 VLCD0 voltage level externally.
−
I
OPEN
96
94
LCD drive 1/4 bias voltage (middle level) supply pin. This pin can
be used to supply the 1/4 VLCD0 voltage level externally.
−
I
OPEN
91
89
Logic block power supply connection. Provide a voltage of
between 2.7 and 6.0 V.
−
−
−
LCD driver block power supply connection. Provide a voltage of
92
90
between 7.0 and 10.0 V when the display contrast adjustment
circuit is used and provide a voltage of between 4.5 and 10.0 V
−
−
−
when the circuit is not used.
97
95
Power supply connection. Connect to ground.
−
−
−
No.7141-7/54
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