EM65568 ELAN Microelectronics Corp, EM65568 Datasheet - Page 37
EM65568
Manufacturer Part Number
EM65568
Description
130 Com/ 128 Seg 4096 Color Stn Lcd Driver
Manufacturer
ELAN Microelectronics Corp
Datasheet
1.EM65568.pdf
(112 pages)
- Current page: 37 of 112
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(6)Data read and write bit assignment
7.11 Display Data Structure and Gradation Control
For the purpose of gradation control, one pixel requires multiple bits of display RAM. The EM65568 has 4-bit data per output
to achieve the gradation display.
The three outputs of the segment driver are used for one pixel of RGB, and the EM65568 is connected to an STN color LCD
panel. It can display 128*130 pixels with 4096 colors (4 bits * 4 bits * 4 bits). In this case, since the gradation display data is
processed by a single access to the memory, the data can be rewritten fast and naturally.
The weighting for each data bit is dependent on the status of the SWAP bit and the REF bit that is selected when data is written
to the display RAM.
* This specification is subject to be changed without notice.
In 16-bit data bus mode
In 8-bit data bus mode
ABS=0 HSW=0 C256=0 Address
ABS=1 HSW=0 C256=0 Address
ABS=0 HSW=1 C256=0 Address
ABS=0 HSW=0 C256=1 Address
ABS=0 C256=0 Write D15 D14 D13 D12 D11 D10 D9
ABS=1 C256=0 Write D15 D14 D13 D12 D11 D10 D9
ABS=* C256=1 Write D15 D14 D13 D12 D11 D10 D9
Read
Read
Read
D15 D14 D13 D12 D11 D10 D9
D15 D14 D13 D12
Write
Write
Write
Write
Read
Read
Read
Read
1
1
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
1
1
1
00,01,02……BD,BE,BFH
00,01,02……7D,7E,7FH
00,02,04………FC,FEH
00,02,04………FC,FEH
1
1
D11 D10 D9
1
1
130 COM/ 128 SEG 4096 Color STN LCD Driver
D10 D9
37
D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
1
D2 D1 D0 D7
D8
D8
D8
D8
D8
D8
D7
D7
D7
D7
D7
D7
D6
D6
D6
D6
D6
1
1
D5
D5
D5
D5
01,03,05………FD,FFH
01,03,05………FD,FFH
D5
1
1
D4
D4
D4
D4
D4
D4
D4 D3 D2 D1
D3
D3
D3
D3
D3
D3
2005/3/8 (V1.2)
D2
D2
D2
D2
D2
D2
EM65568
D1
D1
D1
D1
D1
D1
D0
D0
D0
D0
D0
1
1
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