FEDL9092-01
OKI Semiconductor
ML9092-01/02/03/04
Power-On Flowchart
Start
Turn on VDD
Turn on VIN
External reset or power-on reset
Input reset signal
Make a setting for INC, WLS, KT, SHL, BE,
PE, DTY1, and DTY0.
Make a setting for control register 1
Make a setting for registers
Make a setting for port register A, port
register B, port register C, port register D, and
display data RAM according to specifications.
Is input of initial
screen data
complete ?
No
Yes
Wait till the liquid crystal driving
voltage stabilization time is reached
Wait till the VOUT voltage stabilizes when the
voltage doubler is used.
Set DISP of control register 2 to
“1”
Displaying of initial screen started
Setting complete
Power-Off Flowchart
LCD driving state
Turn off VIN
Turn off VDD
[Caution]
• The lines between output pins, and between output pins and other pins (input pins, I/O pins or power supply
pins), should not be short circuited.
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