參數(shù)資料
型號: HD66724
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)動器驅(qū)動程序)
文件頁數(shù): 81/117頁
文件大?。?/td> 834K
代理商: HD66724
HD66724/HD66725
81
Vertical Smooth Scroll
The HD66724/HD66725 can scroll vertically in units of raster-rows. In character display mode (GR = 0),
this is achieved by writing character codes into a DDRAM area that is not being used for display. In other
words, since DDRAM corresponds to a 5-line
×
16-character display, two lines can be used to achieve
continuous smooth vertical scroll even in a 3-line display. Here, after the fifth line is displayed, the first line
is displayed again. In the graphics display mode (GR = 1), a 96 x 32-dot area is assigned as CGRAM. Thus
a non-display area other than the 72 x 24-dot display area can be used to provide consecutive, smooth scroll
display. Segment (mark) display is system-fixed and the scroll function cannot be used.
Specifically, this function is controlled by incrementing or decrementing the value in the display-start line
bits (SL2 to SL0) and display-start raster-row bits (SN2/1/0) by 1. For example, to smoothly scroll up, first
set line bits SN2 to SN0 to 000, and increment SL2 to SL0 by 1 from 000 to 111 to scroll seven raster-
rows. Then increment line bits SN2 to SN0 to 001, and again increment SL2 to SL0 by 1 from 000 to 111.
To start displaying and scrolling from the first raster-row of the second line, update the first line of
DDRAM or CGRAM data as desired during its non-display period.
相關(guān)PDF資料
PDF描述
HD66725 Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動器)
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)動器)
HD66728 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點圖形LCD控制器)
HD66730 Dot-Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66724/HD66725 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
HD66724RA03TA0L 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD CONTROLLER
HD66725 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:112 x 80-dot Graphics LCD Controller/Driver
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