lc75863e Sanyo Semiconductor Corporation, lc75863e Datasheet - Page 6

• Manufacturer Part Number: lc75863e
• Description: 1/3 Duty Lcd Display Drivers With Key Input Function
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions
KS3 to KS6
S5 to S23
KI1 to KI5
KS1/S24
KS2/S25
COM3
S1/P1
S2/P2
S3/P3
S4/P4
COM1
COM2
V
V
TEST
V
OSC
V
V
Pin
DO
LCD
LCD
CE
CL
DI
LCD
DD
SS
1
2
29 to 32
33 to 37
Pin No.
5 to 23
24
25
26
27
28
44
46
47
48
45
43
40
41
38
39
42
1
2
3
4
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.
Common driver outputs
The frame frequency fo is given by : fo = (f
Key scan outputs
Although normal key scan timing lines require diodes to be inserted in the timing lines
to prevent shorts, since these outputs are unbalanced CMOS transistor outputs, these
outputs will not be damaged by shorting when these outputs are used to form a key
matrix. The KS1/S24 and KS2/S25 pins can be used as segment outputs when so
specified by the control data.
Key scan inputs
These pins have built-in pull-down resistors.
Oscillator connection
An oscillator circuit is formed by connecting an external resistor and capacitor at this
pin.
Serial data interface connections to the controller. Note that DO, being an open-drain
output, requires a pull-up resistor.
CE :Chip enable
CL :Synchronization clock
DI :Transfer data
DO :Output data
Used for applying the LCD drive 2/3 bias voltage externally. Must be connected to
VLCD2 when a 1/2 bias drive scheme is used.
Used for applying the LCD drive 1/3 bias voltage externally. Must be connected to
VLCD1 when a 1/2 bias drive scheme is used.
Logic block power supply connection. Provide a voltage of between 4.5 and 6.0V.
LCD driver block power supply connection. Provide a voltage of between VDD–0.5 and
6.0V.
This pin must be connected to ground.
Power supply connection. Connect to ground.
LC75863E, 75863W
Function
OSC
/384)Hz.
Active
—
—
—
—
—
—
—
—
—
—
—
—
H
H
I/O
I/O
—
—
—
O
O
I
I
I
I
I
I
I
when unused
No. 7135-6/24
Handling
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
GND
GND
V
—
—
—
—
DD