lc75874e Sanyo Semiconductor Corporation, lc75874e Datasheet - Page 5

• Manufacturer Part Number: lc75874e
• Description: 1/4-duty General-purpose Lcd Display Driver
• Manufacturer: Sanyo Semiconductor Corporation

Pin Assignments
Pin Functions
S1/P1 to S8/P8
S9 to S66
Symbol
COM1
COM2
COM3
COM4
V
V
OSC
V
V
INH
V
LCD
LCD
CE
CL
DI
LCD
DD
SS
1
2
LC75874E LC75874W
9 to 66
1 to 8
67
68
69
70
76
78
79
80
77
73
74
71
72
75
Pin No.
79, 80,
7 to 64
1 to 6
65
66
67
68
74
76
77
78
75
71
72
69
70
73
Segments outputs for displaying the display data transferred by serial data
input. The S1/P1 to S8/P8 pins can be used as general-purpose output
ports under serial data control.
Common driver outputs. The frame frequency fo is f
Oscillator connection. An oscillator circuit can be formed by connecting an
external resistor and capacitor at this pin.
Serial data transfer inputs. Connected to the controller.
CE: Chip enable
CL: Synchronization clock
DI: Transfer data
Display off control input
INH = low (V
INH = high (V
However, serial data transfer is possible when the display is forced off by
this pin.
Used to apply the LCD drive 2/3 bias voltage externally. Connect this pin to
V
Used to apply the LCD drive 1/3 bias voltage externally. Connect this pin to
V
Logic block power supply. In the range 2.7 to 6.0 V.
LCD driver block power supply. In the range 2.7 to 6.0 V.
Ground pin. Connect to ground.
LCD
LCD
2 when using a 1/2-bias drive scheme.
1 when using a 1/2-bias drive scheme.
SS
DD
) ......Display forced off
).....Display on
S1/P1 to S8/P8 = low (V
(These pins are forcibly set to the segment output port
function and held at the V
S9 to S66 = low (V
COM1 to COM4 = low (V
LC75874E, 75874W
Function
SS
)
SS
SS
SS
)
)
level.)
OSC
/512 Hz.
Active
—
—
—
—
—
—
—
—
—
H
L
No.
I/O
I/O
—
—
—
O
O
4465No. 5800-5/16
I
I
I
I
I
I
when unused
Handling
Top view
Open
Open
Open
Open
GND
GND
V
—
—
—
DD