TOPWAY

LCD Module User Manual

LM3123

www.topwaysz.com

Document Name: LM3123-Manual-Rev0.3.doc

Page: 8 of 9

4.6

Display Command

Code

Instructions

Function

Note

Display ON/OFF

0

0

1

0

1

0

1

1

1 0/1

0 = OFF

1 = ON

(Display Data RAM is not affected)

*1

Set

Display Start Line

0

0

1

1

0

Display Start Line

(0 ~31)

Specifies RAM line corresponding

to the top line of display

*1

Set

Page Address

0

0

1

0

1

1

1

0

Page

(0 ~ 3)

Set Page Address Register

*1

Set

Column Address

0

0

0

Column Address

(0 ~ 79)

Set Column Address Counter

*1

Read Status

1

0

0

0

0

0

Busy=1, Busy

Busy=0, Ready

ADC=1, CW output

ADC=0, CCW output

ON/OFF=1, Display off

ON/OFF=0, Display on

Reset=1, Being reset

Reset=0, Normal

*3

Write

Display Data

0

1

Display Data

Write Display Data to display data RAM

*1

Read

Display Data

1

1

Display Data

Read Display Data from display data RAM

*3

Select ADC

0

0

1

0

1

0

0

0

0 0/1

0 = CW output

1 = CCW output

*1

Static Drive

ON/OFF

0

0

1

0

1

0

0

1

0 0/1

0 = normal drive

1 = static drive

*1

Select duty

0

0

1

0

1

0

1

0

0 0/1

0 = 1/16 duty

1 = 1/32 duty

*1

Read-Modify-Write

0

0

1

1

1

0

0

0

0

0

Read-modify-write = ON

*1

End

0

0

1

1

1

0

1

1

1

0

Read-modify-write = OFF

*1

Reset

0

0

1

1

1

0

0

0

1

0

Software Reset

*1

Note:

*1. For the details of the Display Command, please refer to AX6120 datasheet.

*2. Instruction could be write into both drivers at the same time.

*3. Only read display data or status form one of the driver/controller in the LCD module at a time, otherwise unexpected

data collision will occur.