LC75893M View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC75893M Datasheet PDF : 23 Pages
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Pin Functions
Pin
Pin No.
S1/P1 to S4/P4
S5 to S14
COM1
COM2
COM3
1 to 4
5 to 14
15
16
17
LC75893M
Function
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 = (fOSC/384) Hz.
Active
Handling
I/O when unused
—
O
Open
—
O
Open
KS1/S15
KS2/S16
KS3
KS4
18
Key scan outputs
Although normal key scan timing lines require diodes to be inserted in the
19
20
timing lines to prevent shorts, since these outputs are unbalanced CMOS
transistor outputs, these outputs will not be damaged by shorting when
—
O
Open
21
these outputs are used to form a key matrix. The KS1/S15 and KS2/S16
pins can be used as segment outputs when so specified by the control data.
KI1 to KI5
OSC
CE
CL
DI
DO
TEST
VDD1
VDD2
VDD
VSS
22 to 26
32
34
35
36
33
27
29
30
28
31
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
This pin must be connected to ground.
Used for applying the LCD drive 2/3 bias voltage externally. Must be
connected to VDD2 when a 1/2 bias drive scheme is used.
Used for applying the LCD drive 1/3 bias voltage externally. Must be
connected to VDD1 when a 1/2 bias drive scheme is used.
Power supply connection. Provide a voltage of between 4.5 and 6.0 V.
Power supply connection. Connect to ground.
H
I
GND
—
I/O
VDD
H
I
I
GND
—
I
—
O
Open
—
I
—
—
I
Open
—
I
Open
—
—
—
—
—
—
No. 5971-6/23
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