參數(shù)資料
型號(hào)： HD66520T
廠商： Hitachi,Ltd.
英文描述： 160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM(點(diǎn)陣圖形LCD160通道驅(qū)動(dòng)器)
中文描述： 160通道4級(jí)灰度顯示列的內(nèi)部位圖的RAM（點(diǎn)陣圖形LCD160通道驅(qū)動(dòng)器驅(qū)動(dòng)程序）
文件頁(yè)數(shù)： 27/45頁(yè)
文件大?。?/td> 336K
代理商： HD66520T
HD66520T
1040
Display-Data Transfer
Display RAM data is transferred to 160-bit data latch circuits 1 and 2 at each falling edge of the CL1
clock pulse. Since display data transfer and RAM access to draw data are completely synchronous-
separated in the LSI, there will be no draw data loss or display flickering due to display data transfer
timing.
The first line data transfer involves the first line marker (FLM), which initializes a line counter, and
transfers the first line data to data latch circuits 1 and 2. Subsequent line data transfers involve
transferring the second and the subsequent line data to data latch circuits 1 and 2 while incrementing the
line counter value.
First Line Data Transfer
The line counter is initialized synchronously with an FLM signal. The first line is transferred to data latch
circuits 1 and 2 at the falling edge of the CL1 (Figure 22).
Subsequent Line Data Transfer
The second and the subsequent line data are transferred to data latch circuits 1 and 2 at the falling edge of
the CL1 to update the line counter value (Figure 23).
CL1
FLM
Line counter
X + 1
1
2
Xth + 1 line
1st line
2nd line
1st line
Xth line
Data latch circuit 1
Data latch circuit 2
(Y1 to Y160)
Figure 22 First Line Data Transfer
CL1
Line counter
n + 1
n
nth line
nth + 1 line
nth line
nth – 1 line
Data latch circuit 1
Data latch circuit 2
(Y1 to Y160)
Note: Outputs Y1 to Y160 are converted into four levels before output according the liquid crystal altemating signal.
Figure 23 Subsequent Line Data Transfer
相關(guān)PDF資料
PDF描述
HD66522 160-Channel Column Driver with Internal Bit-Map RAM for Reflective Color Display and Grayscale Display(點(diǎn)陣圖形LCD160通道驅(qū)動(dòng)器)
HD66523R 240-Channel Common Driver with Internal LCD Timing Circuit(帶內(nèi)部LCD定時(shí)電路的240通道驅(qū)動(dòng)器)
HD66701 Dot Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
HD66702 Dot Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
HD66702R Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66520TA0 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66520TB0 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM
HD66522 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66523 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66523R 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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