參數(shù)資料
型號: ML87V3104TB
廠商: OKI ELECTRIC INDUSTRY CO LTD
元件分類: 顯示控制器
英文描述: 640 X 240 PIXELS CRT OR FLAT PNL GRPH DSPL CTLR, PQFP100
封裝: 14 X 14 MM, 0.50 MM PITCH, PLASTIC, TQFP-100
文件頁數(shù): 45/69頁
文件大?。?/td> 444K
代理商: ML87V3104TB
FEDL87V3104-03
OKI Semiconductor
ML87V3104
5/69
FUNCTIONAL DESCRIPTION
1. Display Memory
The address and data configuration of the display memory is specified by making control register settings.
When the defined memory size is smaller than the internal DRAM (4M bits), the page mode operation is started
automatically, making it possible to specify the display address in units of a page and to access the host CPU (a
maximum of 256 pages). Even when the address space of the host CPU bus is smaller than the display memory
space, the entire area can be accessed using the page mode.
There are limitations on the LCD drive mode depending on the display memory data width. (See Section 3.1.)
Note that the LCD control timings must be defined before accessing the display memory. (See Section 3.1.2)
Control registers:
IMASZX [#03h: bit 3-0]: Display memory horizontal size (2
n) (Table F1.1)
IMASZY [#03h: bit 7-4]: Display memory vertical size (2
n)
(Table F1.1)
IMDBPP [#02h: bit 1-0]: Number of bits per pixel
(Table F1.2)
HSTPGA [#3Bh]:
Page number for host access
Table F1.1 Display memory size selection
IMASZY
Vertical size
(lines)
IMASZX
Horizontal size
(pixels)
0000
64
0000
64
0001
128
0001
128
0010
256
0010
256
0011
512
0011
512
0100
1024
0100
1024
0101
2048
0101
2048
0110
4096
0110
4096
0111
(Reserved)
0111
(Reserved)
1XXX
(Reserved)
1XXX
(Reserved)
Table F1.2 Display memory data width
Number of simultaneously displayed colors
IMDBPP
Number of bits
(bits / pixel)
Color mode
Monochrome mode
Applicable
LCD type
0 0 X
010
4
16/4096
16
011
8
Pseudo color
256/4096
256
STN/TFT
4096
STN
100
16*
1
Direct color
65536
TFT
*1: Correspondence between the display memory data and the color data in the 16BPP mode.
Upper byte
Lower byte
R
0
R
3
R
2
R
1
B
0
B
3
B
2
B
1
G
3
G
2
G
1
G
0
7
0
7
Upper byte
Lower byte
R
5
R
4
R
3
R
2
R
1
B
5
B
4
B
3
B
2
B
1
G
5
G
4
G
3
G
2
G
1
G
0
7
0
7
STN 16 BPP
TFT 16 BPP
(12)
(no use)
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