參數(shù)資料
型號(hào)： HM17CM256
廠商： HYNIX SEMICONDUCTOR INC
元件分類： 顯示驅(qū)動(dòng)器
英文描述： 128XRGBX82 OUTPUT LCD DRIVER IC with built-in RAM
中文描述： LIQUID CRYSTAL DISPLAY DRIVER, UUC580
封裝： 19.75 X 2.39 MM, GOLD BUMP, DIE-580
文件頁(yè)數(shù)： 32/111頁(yè)
文件大?。?/td> 2094K
代理商： HM17CM256
HM17CM256
- 32 -
gradation level table (MON=”1”, Black & white mode)
(MSB)RAM data (LSB)
Gradation level
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
RAM data
0
0
1
1
* : Don’t Care
GLSB
*
*
*
*
Gradation level
0
0
1
1
0
0
0
0
1
1
1
1
0
1
0
1
(12) GRADATION LSB CONTROL
At 256 colors input mode, this IC provides segment driver output for 8-gradation display using
successive 3 bits of data and that for 4-gradation display using successive 2 bits of data.
The segment driver output for the 4-gradation display uses 2 bits written to the corresponding RAM
area and 1 bit supplemented by the gradation LSB circuit, and then selects 4 gradations from 8-
gradations.
At fixed gradation mode, the segment driver output for the 4-gradation display result in a gradation
level of 0 regardless of gradation LSB register, when 2 bits of data on the display RAM are “00”.
When 2 bits of data on the display RAM is “11”, a gradation level of 7/7 is selected regardless of
gradation LSB register. The other gradation levels are selected depending on 2 bits of data on the
display RAM and the gradation LSB register.
One bit of data is supplemented by setting the gradation LSB register (GLSB).
For this register, the bit information specified for only one time setting is used as the LSB of the
RAM for all the 4-gradation segment drivers.
Gradation LSB = “0”: Set 0 as the LSB of the RAM for 4-gradation segment drivers.
Gradation LSB = “1”: Set 1 as the LSB of the RAM for 4-gradation segment drivers.
(13) GRADATION PALETTE
This IC has two gradation display modes, the fixed gradation display mode and the variable
gradation display mode.
Select mode by setting the gradation display mode register (PWM command) to the purpose.
PWM=”0” : variable gradation mode among 32-level gradations.
PWM=”1” : fixed 8 gradation mode
To select the best gradation level suited to LCD panel at variable gradation display mode, use the
gradation palette register among 32-level gradation palettes. Segment driver outputs are set by
selected 8-level gradation palette.
The gradation palette register provides three registers ( palette Aj, Bj, and Cj : j=0
～
7 ) for the
segment driver outputs, SEGAi(0
～
127), SEGBi(0
～
127), and SEGCi(0
～
127) . Each register
consists of a 5-bit register, selecting 8 gradations from the 32 gradation pattern.
Segment driver selects 4 gradations among 8 gradation by 2 bits wrote-in RAM and 1bit calibrated
by GLSB.
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