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參數(shù)資料
| 型號(hào)： | HD66726 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器) |
| 中文描述： | 圖形液晶顯示控制器/鍵掃描功能（帶鍵掃描功能的圖形液晶顯示控制器/驅(qū)動(dòng)器驅(qū)動(dòng)程序） |
| 文件頁數(shù)： | 18/117頁 |
| 文件大小： | 1549K |
| 代理商： | HD66726 |
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HD66726
18
Character Generator RAM (CGRAM)
Character generator RAM (CGRAM) allows the user to redefine the character patterns in the character
display mode. Up to 64 character patterns of 6 x 8-dot characters can be simultaneously displayed.
DRAM-specified character code can be selected to display one of these user font patterns.
The CGRAM serves as a RAM to store 96 x 40-dot bit pattern data in the graphics display mode. Here,
display patterns are directly written into CGRAM. Character codes set in the DDRAM are not used. For
details, see the Graphics Display section.
Segment RAM (SEGRAM)
Segment RAM (SEGRAM) is used to enable control of segments such as icons and marks through the user
program. Segments and characters are driven by a multiplexing drive method.
SEGRAM has a capacity of 96
×
2 bits, to control the display of a maximum of 192 icons and marks. While
COMS1 and COMS2 outputs are being selected, SEGRAM is read and segments (icons and marks) are
displayed by a multiplexing drive method (96 segments each during COMS1 and COMS2 selection).
Bits in SEGRAM corresponding to segments to be displayed are directly set by the MPU, regardless of the
contents of DDRAM and CGRAM.
Timing Generator
The timing generator generates timing signals for the operation of internal circuits such as DDRAM,
CGROM, CGRAM, and SEGRAM. The RAM read timing for display and internal operation timing by
MPU access are generated separately to avoid interference with one another. This prevents flickering in
areas other than the display area when writing data to DDRAM, for example.
Cursor/Blink Controller
The cursor/blink (or black-white reversed) control is used to create a cursor or a flashing area on the
display in a position corresponding to the location stored in the address counter (AC).
00 01 02 03 04 05 06 07 08 09 0A
1
2
3
4
5
6
7
8
9 10 11
Cursor position
Display position
DDRAM address
0B
12
Note: The cursor/blink or black-white reversed control is also active
when the address counter indicates the CGRAM or SEGRAM.
However, it has no effect on the display.
Figure 1 Cursor Position and DDRAM Address
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66727 | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器) |
| HD66728 | 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點(diǎn)圖形LCD控制器) |
| HD66730 | Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器) |
| HD66731 | Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器) |
| HD66731A00TB0L | 122 x 32 pixel format, Compact LCD size |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66726A03TB0L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
| HD66727 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| HD66727A03 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HD66727A03BP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HD66727A03TA0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
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