參數(shù)資料
型號： HD66728
廠商： Hitachi,Ltd.
英文描述： 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點(diǎn)圖形LCD控制器)
中文描述： 112 × 80點(diǎn)圖形LCD控制器/驅(qū)動(dòng)器（112 × 80點(diǎn)圖形液晶顯示控制器）
文件頁數(shù)： 42/138頁
文件大小： 2158K
代理商： HD66728
HD66728
42
Entry Mode
REV:
Displays all character and graphics display sections with black-and-white reversal when SW = 0 and
REV = 1. For details, see the Reversed Display Function section.
I/D:
When SW = 0, increments (I/D = 1) or decrements (I/D = 0) the DDRAM address by 1 when a
character code is written into or read from the DDRAM. The cursor or blinking moves to the right when
incremented by 1 and to the left when decremented by 1. The same applies to the writing and reading of
CGRAM.
GR:
Sets the GR bit when SW = 0. Activates the character display mode when GR = 0 and SPR = 0.
Displays the font pattern on the CGROM or CGRAM according to the character code written in the
DDRAM. Activates the graphics display mode when GR = 1 and SPR = 0. Displays a given pattern
according to the bit map data written in the CGRAM. In this case, the data in the DDRAM is not used for
display. For details, see the Graphics Display Function section.
CT5:
Sets the most significant bit (CT5) for contrast adjustment when SW = 1. A 64-step adjustment is
also possible by using the CT4–CT0 bits which are set in the contrast-control 1/2 instruction.
RDM:
When SW = 1 and RDM = 0, the RDM increments or decrements the address counter value
according to the I/D bit setting after reading the data from the DDRAM or CGRAM. When RDM = 1, the
address counter value is not updated after the data has been read from the DDRAM or CGRAM. The
address counter value is used when the RAM data is read, modified, and written. Since the first read data is
invalid, the read must be continuously done twice. After writing to the RAM, the address counter value
must be updated.
SPR:
When SW = 1 and SPR = 1, the SPR displays combined character and graphics display screens (the
superimposed display mode). When SPR = 1, the GR bit setting is invalid. In this case, user fonts using
the CGRAM in the character display mode cannot be displayed. For details, see the Superimposed Display
Function section.
R/W RS DB7
DB0
DB6 DB5 DB4 DB3 DB2 DB1
0
0
0
0
1
0
0
I/D
RDM SPR
GR
(SW = 0)
(SW = 1)
REV
CT5
Figure 14 Entry Mode Set Instruction
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PDF描述
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