參數資料
型號: SED1335F
廠商: Electronic Theatre Controls, Inc.
英文描述: LCD Controller ICs
中文描述: LCD控制器芯片
文件頁數: 128/148頁
文件大?。?/td> 388K
代理商: SED1335F
S-MOS Systems, Inc. 2460 North First Street San Jose, CA 95131 Tel: (408) 922-0200 Fax: (408) 922-0238
128
268-0.4
9.0 Application Notes
9.1.3
9.1.3 Display Mode Setting Example 1: Combining Text and Graphics
Conditions
320
×
200 pixels, single-panel drive (1/
200 duty cycle)
First layer: text display
Second layer: graphics display
8
×
8-pixel character font
CG RAM not required
Display memory allocation
First layer (text): 320/8 = 40 characters
per line, 200/8 = 25 lines. Required
memory size = 40
×
25 = 1000 bytes.
Second layer (graphics): 320/8 = 40 char-
acters per line, 200/1 = 200 lines. Re-
quired memory size = 40
×
200 = 8000
bytes.
03E8H
2nd graphics layer
(8000 bytes)
2327H
0000H
1st character layer
(1000 bytes)
03E7H
Figure 81. Character over graphics layers
Register setup procedure
SYSTEM SET
TC/R calculation
C =
40H
P1 =
30H
f
OSC
= 6 MHz
P2 =
87H
f
FR
= 70 Hz
P3 =
07H
P4 =
27H
(1/6)
×
9
×
[TC/R]
×
200 = 1/70
[TC/R] = 48, so TC/R = 2FH
P5 =
2FH
P6 =
C7H
P7 =
28H
P8 =
00H
SCROLL
C =
44H
P1 =
00H
P2 =
00H
P3 =
C8H
P4 =
E8H
P5 =
03H
P6 =
C8H
P7 =
XH
P8 =
XH
P9 =
XH
P10 =
XH
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