ML9040 View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

View to exact match

ML9040

DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER

Oki Electric Industry 

ML9040-Axx/-Bxx

¡ Semiconductor

Initial Setting of Instruction

(1) When data input/output to and from the CPU is carried out by 8 bits (DB0 to DB7):

q Turn on the power.

w Wait for 15 ms or more after VDD has reached 4.5V or more.

e Set 8B by initial setting of instruction.

r Wait for 4.1 ms or more.

t Set 8B by initial setting of instruction.

y Wait for 100 ms or more.

u Set 8B by initial setting of instruction.

i Check the busy flag as No Busy.

o Set 8B. Set LCD line number (N) and character font (F).

(After this, the LCD line number and character font cannot be changed.)

!0 Check No Busy.

!1 Clear the display by setting the display mode.

!2 Check No Busy.

!3 Clear the display.

!4 Check No Busy.

!5 Set the shift mode.

!6 Check No Busy.

!7 Initial setting completed.

Example of Instruction Code for Steps e, t, and u.

R/W RS DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

L L L LHHXXXX

X : Don't Care

44

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