lc75878e Sanyo Semiconductor Corporation, lc75878e Datasheet - Page 7

• Manufacturer Part Number: lc75878e
• Description: 1/8 To 1/10 Duty General-purpose Lcd Display Drivers
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions
S74/COM10
COM1 to COM8
S75/COM9
S1 to S73
P1 to P4
V
V
V
V
V
V
OSC
V
INH
V
Pin
LCD
LCD
LCD
LCD
LCD
CE
CL
DI
LCD
DD
SS
0
1
2
3
4
LC75878E
85 to 78
86 to 89
3 to 75
100
76
77
98
99
92
93
94
95
96
90
91
97
1
2
Pin No.
LC75878W
83 to 76
84 to 87
1 to 73
100
74
75
96
98
99
97
90
91
92
93
94
88
89
95
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, (V
Also,external power must not be applied to this pin since the pin circuit
includes the display contrast adjustment circuit.
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, (V
V
Segment driver outputs.
The S74/COM10 and S75/COM9 pins can be used as common
driver outputs under the control data.
Common driver outputs.
General-purpose output ports.
Oscillator connection.
An oscillator circuit is formed by connecting an external resistor and
capacitor at this pin.
Power supply connection. Connect to ground.
Serial data transfer inputs.
These pins are connected to the microcontroller.
CE :Chip enable
CL :Synchronization clock
DI :Transfer data
LCD drive 2/4 bias voltage (middle level) supply pin. This pin can be
used to supply the 2/4 (V
LCD driver block power supply connection. Provide a voltage of between
7.0 and 11.0 V when the display contrast adjustment circuit is used and
provide a voltage of between 4.5 and 11.0 V when the circuit is not used.
Input that turns the display off and forces the general-purpose output
ports low.
• When INH is low (V
• When INH is high (V
LCD drive 3/4 bias voltage (middle level) supply pin. This pin can be
used to supply the 3/4 (V
LCD drive 1/4 bias voltage (middle level) supply pin. This pin can be
used to supply the 1/4 (V
Logic block power supply connection. Provide a voltage of between 2.7
and 6.0V.
LCD
However, serial data can be transferred when the INH pin is low.
4 must be in the range 0 V to 1.5 V, inclusive.
• Display off
• General-purpose output ports P1 to P4 = low (V
• Display on
• The states of the general-purpose output ports can be set by
S1 to S73 = “L” (V
S74/COM10, S75/COM9 = “L” (V
COM1 to COM8 = “L” (V
the PC1 to PC4 control data.
LCD
LCD
0 – V
0 – V
LC75878E, 75878W
LCD
LCD
SS
DD
)
4) must be greater than or equal to 4.5 V.
4) must be greater than or equal to 4.5 V, and
)
LCD
LCD
LCD
0 – V
0 – V
LCD
0 – V
Function
4).
LCD
LCD
LCD
LCD
4) voltage level externally.
4) voltage level externally.
4) voltage level externally.
4).
LCD
4)
SS
)
Active
—
—
—
—
—
—
—
—
—
—
—
—
—
H
L
I/O
I/O
—
—
—
O
I
I
I
I
I
I
I
I
No. 6473 -7/39
when unused
Handling
Open
Open
Open
Open
Open
Open
Open
GND
GND
GND
V
—
—
—
DD