參數(shù)資料
型號： HCD66731A01BP
廠商： Hitachi,Ltd.
英文描述： Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
中文描述： 點(diǎn)陣液晶顯示控制器/驅(qū)動器支持日語漢字，韓文字體顯示
文件頁數(shù)： 74/131頁
文件大?。?/td> 5332K
代理商： HCD66731A01BP
HD66730/HD66731
73
Scroll Control Register 1 (R5)
The scroll control register 1 (Figure 12) includes bits SN1, SN0, SL3, SL2, SL1, and SL0.
SN1/0:
Selects the starting line to be displayed. When SN1/0 shows 00, display begins from the first line.
When SN1/0 shows 01, 10, 11, display begins from the second, third, or fourth line, respectively. Use these
bits within the display line setting (NL1/0). SN can be used to display a smooth scroll and DDRAM
memory bank switching.
SL0 to SL3:
Selects the scroll starting raster-row of the line set by the start display line (SL1/0). When
these bits show 0000, a display line starting from the head raster-row (first raster-row) is displayed and can
be set to 1100 (13th raster-row) showing the last raster-row. A vertical smooth scroll can be performed by
sequentially incrementing the first raster-row. Refer to Vertical Smooth Scroll for details. Note that bits
SL0 to SL3 that are set to a value above 1100 will not operate correctly.
Scroll Control Register 2 (R6)
The scroll control register 2 (Figure 13) includes bits PS1, PS0, SE4, SE3, SE2, and SE1.
PS1/0:
Selects the partial smooth scroll mode. When PS1/0 bits are 00, all characters scroll horizontally
across the display. When bits PS1/0 are 01, only the leftmost character is fixed and the remaining
characters perform horizontal smooth scroll display. When bits PS1/0 are 10, the two leftmost bits, and
when 11, the three leftmost characters are fixed and the remaining characters perform horizontal smooth
scroll Refer to Partial Smooth Scroll for details.
SE1 to SE4:
These bits enable a dot scroll in display lines designated by scroll control register 3 (R7).
When bit SE is 1, the first line is scrolled according to scroll control register 3 (R7). When SE2 is 1, the
second line scrolls independently, when SE3 is 1, the third line scrolls independently, when SE4 is 1, the
fourth line scrolls independently. Scrolling multiple lines at the same time is also possible.
R/W
0
RS
1
DB7
0
SN1 SN0
0
SL3 SL2 SL1
DB0
SL0
Figure 12 Scroll Control Register 1
R/W
0
RS
1
DB7
0
0
PS1 PS0 SE4 SE3 SE2
DB0
SE1
Figure 13 Scroll Control Register 2
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