LC75836W Datasheet, PDF (7/18 Pages) Sanyo Semicon Device – 1/4-Duty General-Purpose LCD Display Driver

LC75836W
Pin Functions
Symbol
S1/P1
to S4/P4
S5 to S34
S35
COM1
to COM4
OSC
CE
CL
DI
INH
VDD1
VDD2
VDD
VSS
Handling
Pin No.
Function
Active I/O
when
unused
1 to 4
Segment outputs for displaying the display data transferred by serial data input.
-
O
OPEN
The S1/P1 to S4/P4 pins can be used as general-purpose output ports when so set
5 to 34
up by the control data.
39
35 to 38 Common driver outputs. The frame frequency is fo [Hz].
-
O
OPEN
44
Oscillator connection. An oscillator circuit is formed by connecting an external
-
I/O
VDD
resistor and capacitor to this pin. This pin can be used as the external clock input
pin if external clock operating mode is selected with the control data.
46
Serial data transfer inputs. Must be connected to the controller.
H
I
GND
47
CE: Chip enable
I
48
CL: Synchronization clock
-
I
DI: Transfer data
45
Display off control input
L
I
GND
• INH = low (VSS) ...Display forced off
S1/P1 to S4/P4 = low (VSS)
(These pins are forcibly set to the segment output port function
and held at the VSS level.)
S5 to S35 = low (VSS)
COM1 to COM4 = low (VSS)
OSC = Z (high impedance)
RC oscillation stopped
Inhibits external clock input.
• INH = high (VDD)...Display on
RC oscillation enabled (RC oscillator operating mode)
Enables external clock input (external clock operating mode).
However, serial data transfer is possible when the display is forced off.
41
Used to apply the LCD drive 2/3 bias voltage externally.
-
I
OPEN
42
Used to apply the LCD drive 1/3 bias voltage externally.
-
I
OPEN
40
Power supply pin. A power voltage of 4.5 to 6.0V must be applied to this pin.
-
-
-
43
Ground pin. Must be connected to ground.
-
-
-
No.A0428-7/18