LC75833E-E Datasheet, PDF (6/19 Pages) Sanyo Semicon Device – 1/3 Duty General-Purpose LCD Display Drivers

LC75833E, 75833W, 75833JE
Pin Functions
Pin
S1/P1 to
S8/P8
S9 to S35
COM1
COM2
COM3
OSC
CE
CL
DI
INH
V_LCD1
V_LCD2
V_DD
V_LCD
V_SS
Pin No.
LC75833E,
75833W
LC75833JE
Functions
Active
I/O
Handling
when unused
1 to 8
1 to 8 Segment outputs for displaying the display data transferred by serial data
input. The pins S1/P1 to S8/P8 can be used as general-purpose output ports
—
O
9 to 35
9 to 31 when so set up by the control data.
Open
36
32
Common driver outputs.
37
38
33
34
The frame frequency f_O is given by: f_O = (f_OSC/384) Hz.
—
O
Open
Oscillator connection
44
40
An oscillator circuit is formed by connecting an external resistor and capacitor — I/O
V_DD
to this pin.
46
42
Serial data transfer inputs. These CE: Chip enable
47
43
pins are connected to the control
CL: Synchronization clock
48
44
microprocessor.
DI: Transfer data
H
I
—
GND
Display off control input
•INH = low (V_SS): Off
S1/P1 to S8/P8 = Low
(These pins are forcibly set to the segment output port
45
41
function and fixed at the V_SS level.)
S9 to S35 = Low (V_SS),
COM1 to COM3 = Low (V_SS)
•INH = high (V_DD): On
Note that serial data transfers can be performed when the
L
I
GND
display is forced off by this pin.
Used to apply the LCD drive 2/3-bias voltage externally. This pin must be
41
37
connected to VLCD2 when 1/2-bias drive is used.
—
I
Open
Used to apply the LCD drive 1/3-bias voltage externally. This pin must be
42
38
connected to VLCD1 when 1/2-bias drive is used.
—
I
Open
39
35
Logic block power supply. Provide a voltage in the range 2.7 to 6.0 V.
—
—
—
40
36
LCD driver block power supply. Provide a voltage in the range 2.7 to 6.0 V.
—
—
—
43
39
Ground pin. Connect to ground.
—
—
—
Note: The LC75833JE does not have the S12, S23, S24, S35 output pins.
No. 5580-6/19