LC75890W Datasheet, PDF (8/29 Pages) Sanyo Semicon Device – 1/4duty and Static Drive General-Purpose LCD Display Drivers

Continued from preceding page.
LC75890W
Symbol
Pin No.
Function
INH
VDD
VLCD
VSS
Display off control input
• INH = low (VSS) ...Display forced off
S1/P1 to S12/P12=low (VSS)
(These pins are forcibly set to the general-purpose output
port function and held at the VSS level.)
S13 to S36=low (VSS)
COM1 to COM4=low (VSS)
S37/OSCI=low (VSS)
(This pin is forcibly set to the segment output port function
and held at the VSS level.)
45
LCD drive bias voltage stabilization circuit stopped.
Stops the internal oscillator.
Inhibits external clock input.
• INH = high (VDD) ...Display on
LCD drive bias voltage stabilization circuit is enabled.
Enables the internal oscillator circuit.
(Internal oscillator operating mode)
Enables external clock input.
(External clock operating mode)
However, serial data transfer is possible when the display
is forced off.
Logic block power supply pin. A power voltage of 2.7 to 3.6V
42
must be applied to this pin.
LCD driver block power supply pin. A power voltage of 2.7 to
43
5.5V must be applied to this pin.
44
Ground pin. Must be connected to ground.
Active
L
-
-
-
Handling
I/O
when
unused
I
GND
-
-
-
-
-
-
No.A1971-8/29