TOPWAY

LCD Module User Manual

LM6020ACA

www.topwaysz.com

Document Name: LM6020ACA-Manual-Rev0.1

Page: 9 of 14

5. Function specifications

5.1

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.

5.2

Application circuit (Example)

-

4x boosting

-

80 mode

-

Using internal ref resistor

-

C1~C5 = 1.0uF (25V)

-

C6~C9 = 1.0uF (25V)

Note:

Please refer to the ST7565 data sheet for

details

5.3

The Parallel Interface

Shared

6800 Mode

8080 Mode

A0

R/W

E

/RD

/WR

Function

H

H

H

L

H

Reads the display data

H

L

H L

H

L H

Writes the display data

L

H

H

L

H

Status read

L

L

H L

H

L H

Write control data(command)

5.4

The Serial Interface

When the serial interface has been selected then when the chip is in active state the serial data

input(SI) and the serial clock(SCL) can be received. The serial data is read from the serial data

input pin in the rising edge of the serial clock . When “A0”=“H”, the data is display data, and when

“A0”=“L”, the data is command.