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參數(shù)資料
| 型號： | HD66420 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) |
| 中文描述： | （內(nèi)存提供160通道4級灰度的點(diǎn)陣圖形液晶顯示驅(qū)動程序） |
| 文件頁數(shù)： | 20/52頁 |
| 文件大?。?/td> | 167K |
| 代理商： | HD66420 |
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HD66420
20
Configuration of Display Data Bit
Packed Pixel Method
For grey scale display and super reflective colour display, multiple bits are needed for one pixel. In the
HD66420, two bits are assigned to one pixel, enabling a four-level grey scale display and four colour
display.
One address, eight bits, specifies four pixels, and pixel bits 0 and 1 for gray scale are managed as
consecutive bits in one byte.
When grey scale display data is manipulated in bit units, one memory access is sufficient, which enables
smooth high-speed data rewriting.
The bit data to input to pin DB7, DB5, DB3 and DB1 become MSB and the bit data to input via pin DB6,
DB4, DB2 and DB0 are LSB.
0 0 0
1 1 0 1 1
7 6 5
4 3 2 1 0
Bit
FRC control circuit
Grey scale/colour palette
Physical memory
LCD display state
0 0 0
0 1 0 1 0
7 6 5
4 3 2 1 0
4 pixels/address
Address: n
Address: n + 1
Figure 11 Packed Pixel Method
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66420TA0 | LCD Display Driver |
| HD66421 | (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) |
| HD66421TB0 | (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) |
| HD66503 | 240-Channel Common Driver with Internal LCD Timing Circuit(帶內(nèi)部LCD定時電路的240通道驅(qū)動器) |
| HD66520T | 160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM(點(diǎn)陣圖形LCD160通道驅(qū)動器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66420TA0 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:LCD Display Driver |
| HD66421 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:(RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) |
| HD66421TB0 | 制造商:Renesas Electronics Corporation 功能描述: |
| HD66503 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HD66520 | 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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