ST7038 Datasheet, PDF (34/63 Pages) Sitronix Technology Co., Ltd. – Dot Matrix LCD Controller/Driver

ST7038
For example, the normal height font and the doubled height font are shown as below.
2 line mode normal display (DH=0, N2=0, N1=1)
1 line mode with double height font (DH=1, N2=0, N1=0)
N[2,1]: Control the “Display Line Number”.
ST7038 has 17-common and 100-segment LCD driving signals as default. If operated in 1-Line Display mode, the
used common pads are COM1~COM8 and COMI (for ICON). If operated in 3-Line Display mode, some segments will
be used as commons. Please refer to Table 9 or the “Pad Location Coordinates” section for more detailed information.
N2 N1
Display Mode
0
0
1-Line Display mode
0
1
2-Line Display mode
1
X
3-Line Display mode
Table 10 N[2,1] vs. Display Line Number
Complete Display Modes:
UD
DH
N2
X
0
0
X
1
0
X
0
0
1
1
0
0
1
0
X
X
1
N1
Display Mode Description
0
1-Line Display mode
0
1-Line Display mode, double height
1
2-Line Display mode
1
2-Line Display mode, double height (UP)
1
2-Line Display mode, double height (DOWN)
X
3-Line Display mode
Duty
1/(8+1)
1/(16+1)
1/(16+1)
1/(24+1)
1/(24+1)
1/(24+1)
Select CGRAM & COM/SEG direction
OPR2, OPR1:
Select CGROM size. The CGROM stores 256 characters. The first 16 characters can be replaced by CGRAM data
(customized pattern). By setting OPR2 and OPR1, the CGROM pattern will be changed as shown in Table 7. The used
character numbers are shown below:
OPR2
OPR1
CGROM
CGRAM
0
0
240
8
0
1
248
8
1
0
250
6
1
1
256
0
Ver 1.3
34/63
2008/05/27