參數(shù)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(shù): 100/148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
100
268-0.4
6.0 Character Generator
6.3 – 6.3.2
Row
Row 0
Row 1
Row 2
Row 7
Row 8
Row 14
Row 15
R3
0
0
0
0
1
1
1
R2
0
0
0
1
0
1
1
R1
0
0
1
1
0
1
1
R0
0
1
0
1
0
0
1
Line 1
Line 2
Figure 65. Row select address
6.3.1 M1 = 1
The SED1335F/1336F automatically converts all bits
set in bit 6 of character code for CG RAM 2 to zero.
Because of this, the CG RAM data areas become
contiguous in display memory.
When writing data to CG RAM:
Calculate the address as for M1 = 0.
Change bit 6 of the character code from “1” to
“0”.
6.3.2 CG RAM Addressing Example
Define a pattern for the “A” in Figure 38.
The CG RAM table start address is 4800H.
The character code for the defined pattern is
80H (the first character code in the CG RAM
area).
As the character code table in Figure 58 shows, codes
80H to 9FH and E0H to FFH are allocated to the CG
RAM and can be used as desired. 80H is thus the first
code for CG RAM. As characters cannot be used if
only using graphics mode, there is no need to set the
CG RAM data.
Table 25. Character data example
CGRAM ADR
P1
P2
5CH
00H
40H
Reverse the CG RAM ad-
dress calculation to cal-
culate SAG
CSRDIR
4CH
Set cursor shift direction
to right
CSRW
P1
P2
MWRITE
P
P2
P3
P4
P5
P6
P7
P8
P8
P16
46H
00H
48H
42H
70H
88H
88H
88H
F8H
88H
88H
00H
00H
00H
CG RAM start address is
4800H
Write ROW 0 data
Write ROW 1 data
Write ROW 2 data
Write ROW 3 data
Write ROW 4 data
Write ROW 5 data
Write ROW 6 data
Write ROW 7 data
Write ROW 8 data
Write ROW 15 data
Note:
Lines = 1: lines in the character bitmap
8
Lines = 2: lines in the character bitmap
9
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