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參數(shù)資料
| 型號： | HD64646 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | LCTC (LCD Timing Controller) |
| 中文描述： | LCTC（LCD定時控制器） |
| 文件頁數(shù)： | 29/50頁 |
| 文件大小： | 156K |
| 代理商： | HD64646 |
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HD64645/64646
29
System configuration and Mode Setting
LCD System Configuration
The screen configuration, single or dual, must be specified when using the LCD system (Figure 21).
Using the single screen configuration, you can construct an LCD system with lower cost than a dual screen
system, since the required number of column drivers is smaller and the manufacturing process for mounting
them is simpler. However, there are some limitations, such as duty ratio, breakdown voltage of a driver,
and display quality of the liquid crystal, in single screen configuration. Thus, a dual screen configuration
may be more suitable to an application.
The LCTC also offers an 8-bit LCD data transfer function to support an LCD screen with a smaller interval
of signal input terminals. For a general size LCD screen, such as 640
×
200 single, or 640
×
400 dual, the
usual 4-bit LCD data transfer is satisfactory.
Hardware Configuration and Mode Setting
The LCTC supports the following hardware configurations:
Single or dual screen configuration
4-or 8-bit LCD data transfer
and the following screen format:
Character, graphic 1, or graphic 2 display
Normal or wide display (only in character mode)
OR or attribute display (only in character mode)
Also, the LCTC supports up to 40 Mbits/s of large screen mode (mode 13) for large screen display. This
mode is provided only in graphic 1 mode.
Table 9 shows the mode selection method according to hardware configuration and screen format. Table 10
shows how they are specified.
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