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參數資料
| 型號： | LCD3 |
| 英文描述： | EM73201/EM73E00/EM73PE00 Application Note |
| 中文描述： | EM73201/EM73E00/EM73PE00應用筆記 |
| 文件頁數： | 1/4頁 |
| 文件大小： | 19K |
| 代理商： | LCD3 |
EM73A88 16 x 64 dots LCD application Note(Prat I I )
LCD display performance is determined by perfect matching between I C
hardware and software. There are some restrains are not so obvious to see
and not so often to meet. But once happened, it’s very hard to debugging,
To get a perfect solution may totally change the program or the data
structure. So get the notice in the start of programming will give a big help.
Following is a step by step checking list to find the best solution for the
perfect LCD display.
1.
As you first start to use PMA88 to emulate the LCD function, try to
put some picture on it and check the display performance, I s there
some missing pixel or shadow I f it’s perfect. You could go next.
Otherwise, check the wire for the missing pixel. Add a resistor (200K
ohm) from V1 to ground to reduce the shadow.
2.
Following is two regular programs for 1024 dots LCD update data.
These two subroutine calls take about 2400 instruction cycles (4ms in
4.6Mhz) to fill a whole size LCD data RAM. but this is an ideal case,
usually, it will take more instruction cycles than 4ms. But for the case
of EM73A88, Not exceeds 32ms for safety, the best way is under
16ms. 32ms is the LCD scan period.
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