LC75890W Datasheet, PDF (10/32 Pages) Sanyo Semicon Device – 1/4duty and Static Drive General-Purpose LCD Display Drivers

LC75890W, LC75890E
Continued from preceding page.
Pin No.
Handling
Symbol
LC75890W
(SQFP48)
LC75890E
(QIP44M)
Function
Active
I/O
when
unused
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
INH
45
function and held at the VSS level.)
41
LCD drive bias voltage stabilization circuit stopped.
L
I
GND
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.
VDD
42
Logic block power supply pin. A power voltage of 2.7 to
38
-
-
-
3.6V must be applied to this pin.
VLCD
43
LCD driver block power supply pin. A power voltage of
39
-
-
-
2.7 to 5.5V must be applied to this pin.
VSS
44
40
Ground pin. Must be connected to ground.
-
-
-
No.A1971-10/32