LC75852E View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
View to exact match
LC75852E
SANYO -> Panasonic
LC75852E Datasheet PDF : 16 Pages
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Block Diagram
LC75852E, 75852W
Pin Functions
Pin
S1/P1 to S4/P4
S5 to S43
Pin No.
Function
Active
1 to 4
5 to 43
Segment outputs: Used to output the display data that is transmitted over the
serial data input. Pins S1/P1 to S4/P4 can be used as general-purpose outputs
according to control data specification.
—
Handling when
I/O unused
O
Open
COM1
COM2
KS1/S44,
KS2/S45,
KS3 to KS6
KI1 to KI5
OSC
CE
CL
DI
DO
RES
VDD
VSS
44
45
Common driver outputs. The frame frequency fO is (fOSC/512) Hz.
—
O
Open
46
47
48 to 51
Key scan outputs. When a key matrix is formed, normally a diode will be
attached to the key scan timing line to prevent shorts. However, since the
output transistor impedance is an unbalanced CMOS output, it will not be
damaged if shorted. Pins KS1/S44 and KS2/S45 can be used as segment
outputs according to control data specification.
—
O
Open
52 to 56 Key scan inputs: Pins with a built-in pull-down resistor.
H
57
Oscillator connection: Oscillator circuit can be formed by connecting the pin to
a resistor and a capacitor.
—
62
H
Serial data interface: Connected CE: Chip enable
63
to the controller. Since DO is an CL: Synchronization clock
64
open-drain output, it requires a
pull-up resistor.
DI: Transfer data
DO: Output data
—
61
—
I
GND
I/O
VDD
I
I
GND
I
O
Open
Reset input that re-initializes the LSI internal states. During a reset, the display
59
segments are turned off forcibly regardless of the internal display data. All
internal key data is reset to low and the key scan operation is disabled.
L
I
GND
However, serial data can be input during a reset.
60
Power supply connection. A supply voltage of between 4.5 and 6.0 V must be
provided.
—
—
—
58
Power supply ground connection. Must be connected to GND.
—
—
—
No. 4828-4/16
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