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參數(shù)資料
| 型號(hào)： | HD66725 |
| 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)： | 35/117頁 |
| 文件大?。?/td> | 834K |
| 代理商： | HD66725 |
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HD66724/HD66725
35
a. When unused character patterns are not programmed: If an unused character code is written into
DDRAM, all its dots are lit, because the EPROM is filled with 1s after it is erased.
b. When unused character patterns are programmed as 0s: Nothing is displayed even if unused
character codes are written into DDRAM. (This is equivalent to a space.)
Instructions
Outline
Only the instruction register (IR) and the data register (DR) of the HD66724/HD66725 can be controlled by
the MPU. Before starting internal operation of the HD66724/HD66725, control information is temporarily
stored in these registers to allow interfacing with various peripheral control devices or MPUs which operate
at different speeds. The internal operation of the HD66724/HD66725 is determined by signals sent from the
MPU. These signals, which include the register selection signal (RS), the read/write signal (R/W), and the
data bus signal (DB0 to DB7), make up the HD66724/HD66725 instructions. There are five categories of
instructions that:
Control the display
Control power management
Set internal RAM addresses
Transfer data with the internal RAM
Control key scan (when serial interface mode)
Normally, instructions that perform data transfer with the internal RAM are used the most. However, auto-
incrementation by 1 (or auto-decrementation by 1) of internal HD66724/HD66725 RAM addresses after
each data write can lighten the MPU program load.
Because instructions other than clear display instruction are executed in 0 cycle, instructions can be written
in succeccion.
While the clear display instruction is being executed for internal operation, or during reset, no instruction
other than the key scan read instruction can be executed.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66726 | 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) |
| 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) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66725A03TA0L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD CONTROLLER |
| HD66726 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| 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 |
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