TOPWAY

LCD Module User Manual

LM240120DFW

www.topwaysz.com

Document Name: LM240120DFW-Manual-Rev0.2

Page: 7 of 10

4. Function specifications

4.1

Adjusting the Display Contrast

-

This LCD module equipped with latest digital contrast adjustment function.

-

Its display contrast could be adjusted by MCU command. (please see the command tables for

details)

-

It is recommended to provide a contrast adjustment interface for end-user, where the best

display result could meet the individual preference in mass production.

4.2

Resetting the LCD module

The LCD module should be initialized by using /RST terminal.

While turning on the VDD and VSS power supply, maintain /RST terminal at LOW level. After the

power supply stabilized, release the reset terminal (/RST=HIGH)

4.2.1 Display Memory Map

Page address

data

LCD Display (front view)

0

DB0

:

DB7

1

DB0

:

DB7

2

DB0

:

DB7

DB0

:

DB7

:

:

DB0

:

DB7

12

DB0

:

DB7

13

DB0

:

DB7

14

DB0

:

DB7

Column Address

00h

EFh

Note:

*1. MUX Rate, MR=1 (1/128duty)

*2. Start Line, SL[5:0]=000000

*3. Fixed Line, FL[3:0]=0000

*4. SEG mirror, MX=1 (mirror X direction)

*5. COM mirror, MY=0 (normal Y direction)

*6. MSB First Mapping, MSF=0

240x120 pixels