參數(shù)資料
型號(hào)： HD667B66R
廠商： Hitachi,Ltd.
英文描述： 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors
中文描述： 132 × 176點(diǎn)圖形LCD控制器/驅(qū)動(dòng)器的65K色
文件頁(yè)數(shù)： 27/97頁(yè)
文件大小： 681K
代理商： HD667B66R
HD66766R Rev. 1.0-1 / September 2002
27
Entry Mode (R05h )
Compare resister (R06h)
The write data sent from the microcomputer is modified in the HD66766R and written to the GRAM. The
display data in the GRAM can be quickly rewritten to reduce the load of the microcomputer software
processing. For detail, see the Graphics Operation Function section.
Figure 11Compare Resister Instruction
HWM:
When HWM=1, data can be written to the GRAM at high speed. In high-speed write mode, four
words of data are written to the GRAM in a single operation after the writing to RAM four times. Write to
RAM four times, otherwise the four words cannot be written to the GRAM. Thus, set the lower 2 bits to 0
when setting the RAM address. For details, see the High-Speed RAM Write Mode section.
I/D1-0:
When I/D1-0 = “1”, the address counter (AC) is automatically incremented by 1 after the data is
written to the GRAM. When I/D1-0 = “0”, the AC is automatically decremented by 1 after the data is
written to the GRAM. The increment/decrement setting of the address counter by I/D1-0 is done
independently for the upper (AD15-8) and lower (AD7-0) addresses. The AM bit sets the direction of
moving through the addresses when the GRAM is written to.
AM set
the automatic update method of the AC after the data is written to the GRAM. When AM= “0”,
the data is continuously written in parallel. When AM = “1”, the data is continuously written vertically.
When window address range is specified, the GRAM in the window address range can be written to
according to the I/D1-0 and AM settings.
SPR:
When SPR=1, 4096colors are displayed. 12 bit (DB11-DB0) are used for this display. Refer to
“4096 color display function” in page 57 for details.
Figure 12 Address Direction Settings
0000h
AF83h
0000h
AF83h
0000h
AF83h
0000h
AF83h
0000h
AF83h
0000h
AF83h
0000h
AF83h
0000h
AF83h
I/D1-0="00"
Horizontal: decrement
Vertical: decrement
I/D1-0="01"
Horizontal: increment
Vertical: decrement
I/D1-0="10"
Horizontal: decrement
Vertical: increment
I/D1-0="11"
Horizontal: increment
Vertical: increment
AM="0"
Horizontal
AM="1"
Vertical
Note: When a window address range has been set the GRAM can only be written to within that range.
R/W
RS
DB7
DB0
DB6
DB5
DB4
DB3
DB2
DB1
DB8
DB9
DB10
DB11
DB12
DB13
DB14
DB15
SPR
W
1
LG0
LG1
LG2
I/D0
AM
HWM
0
0
0
0
0
0
0
I/D1
0
W
1
CP1
CP0
CP2
CP7
CP6
CP5
CP4
CP3
CP11 CP10 CP9
CP8
CP15 CP14 CP13 CP12
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