TOPWAY

LCD Module User Manual

LMB204AFW

www.topwaysz.com

Document Name: LMB204AFW-Manual-Rev0.1

Page: 9 of 11

4.3.2 Display Data RAM (DDRAM)

ROM Characters (Character Code = 10h ~ FFh) could be written into DDRAM for displaying the

Character (5x8 dots font). User-defined Characters (Character Code = 00h ~ 07h) stored in

CGRAM could also be use. Calling Character Code 08h ~ 0Fh will call out User-defined

Characters 00h ~ 07h respectively.

COLUMN

1

st

2

nd

3

rd

4

th

5

th

16

th

17

th

18

th

19

th

20

th

1

st

00h 01h 02h 03h 04h

0Fh 10h 11h 12h 13h

2

nd

40h 41h 42h 43h 44h

4Fh 50h 51h 52h 53h

3

rd

14h 15h 16h 17h 18h

23h 24h 25h 26h 27h

4

th

54h 55h 56h 57h 58h

63h 64h 65h 66h 67h

DDRAM Address Map

Note:

*1. The mapping is based on top view of the LCD module

*2. N=1, 2-line display

*3. F=0, 5x8 dots font

*4. D=1, display on

4.4

Character Code Rom

Please refer to SPLC780D Data sheet

20 x 4 Characters

(5x8 dots font)