TOPWAY

LCD Module User Manual

LM6800AFW-5

www.topwaysz.com

Document Name: LM6800AGW-6-Manual-Rev0.1.DOC

Page: 8 of 10

4.4

Display Memory Map

Page (X) address

data

LCD Display (front view)

0

D0

:

D7

1

D0

:

D7

2

D0

:

D7

3

D0

:

D7

4

D0

:

D7

5

D0

:

D7

6

D0

:

D7

7

D0

:

D7

Column(Y) Address

00h

3Fh

00h

3Fh

00h

3Fh

00h

3Fh

Chip Select CSA

0

1

0

1

Chip Select CSB

0

0

1

1

Chip Select CSC

0

0

0

0

Note:

1) Display start line (Z address) = 0

2) The Display Data store separately in four drivers.

4.5

Internal Registers

There are three registers in each section of LCD module. Each of them could be controlled

independently.

Page (X) Address Register

X address register designates pages of the internal display data RAM. Count function is not

available. The address should set by instruction.

Column (Y) Address Counter

Y address counter designates address of the internal display data RAM. It could be set by

instruction and increased by 1 automatically by read or write display data operations.

Display Start Line (Z) Register

Z address register indicates of display data RAM to LCD top line. It may be used for scrolling the

display pattern on the LCD.

256x64 pixels