LC75835W Datasheet, PDF (7/35 Pages) Sanyo Semicon Device – CMOS IC 1/3, 1/4-Duty General-Purpose LCD Display Driver

LC75835W
Pin Functions
Symbol
S1/P1 to S16/P16
S17 to S34
COM1 to COM3
COM4/S35
OSCI
CE
CL
DI
INH
VLCD1
VLCD2
VDD
VLCD
VSS
Pin No.
1 to 16
17 to 34
38 to 36
35
44
46
47
48
45
41
42
39
40
43
Handling
Function
Active I/O
when
unused
Segment outputs for displaying the display data transferred by serial data input.
-
O
OPEN
The S1/P1 to S16/P16 pins can be used as general-purpose output ports when
so set up by the control data.
Common driver output pins. The frame frequency is fo [Hz]. COM4/S35 can be
-
O
OPEN
used as segment output in 1/3 duty mode.
External clock input pin. A 15 to 65kHz clock must be supplied to this pin in
-
I
GND
external clock operating mode. This pin must be connected to ground in
internal oscillator operating mode.
Serial data transfer inputs. Must be connected to the controller.
H
I
GND
CE: Chip enable
I
CL: Synchronization clock
-
I
DI: Transfer data
Display off control input
L
I
GND
• INH = low (VSS) ...Display forced off
S1/P1 to S16/P16 = low (VSS)
(These pins are forcibly set to the general-purpose output
port and held at the VSS level.)
S17 to S34 = low (VSS)
COM1 to COM3 = low (VSS)
COM4/S35 = low (VSS)
Shuts off current to the LCD drive bias voltage generation
divider resistors.
Stop the internal oscillation circuit.
• INH = high (VDD)...Display on
However, serial data transfer is possible when the display is forced off.
Used to apply the LCD drive 2/3 bias voltage externally.
-
I
OPEN
Connect this pin to VLCD2 when using a 1/2-bias drive scheme.
Used to apply the LCD drive 1/3 bias voltage externally.
-
I
OPEN
Connect this pin to VLCD1 when using a 1/2-bias drive scheme.
Power supply pin for the logic circuit block. A power voltage of 2.7V to 3.6V
-
-
-
must be applied to this pin.
Power supply pin for the LCD driver block. A power voltage of 2.7V to 5.5 V
-
-
-
must be applied to this pin.
Power supply pin. Must be connected to ground.
-
-
-
No.A0429-7/35