TOPWAY

LCD Module User Manual

LM3121

www.topwaysz.com

Document Name: LM3121-Manual-Rev0.2

Page: 2 of 9

Table of Content

1.

Basic Specifications................................................................................................................ 3

1.1

Display Specifications ............................................................................................................................................ 3

1.2

Mechanical Specifications...................................................................................................................................... 3

1.3

Block Diagram........................................................................................................................................................ 3

1.4

Terminal Functions................................................................................................................................................. 4

2.

Absolute Maximum Ratings.................................................................................................... 5

3.

Electrical Characteristics........................................................................................................ 5

3.1

DC Characteristics ................................................................................................................................................. 5

3.2

LED Backlight Circuit Characteristics..................................................................................................................... 5

3.3

AC Characteristics ................................................................................................................................................. 6

4.

Function Specifications .......................................................................................................... 7

4.1

Basic Setting .......................................................................................................................................................... 7

4.2

Resetting the LCD module ..................................................................................................................................... 7

4.3

Adjusting the LCD Display Contrast ....................................................................................................................... 7

4.4

Display Data RAM Memory Map ............................................................................................................................ 8

4.5

Display Command.................................................................................................................................................. 8

5.

Design and Handling Precaution ........................................................................................... 9