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)： 71/111頁(yè)
文件大小： 2094K
代理商： HM17CM256
HM17CM256
- 71 -
(34-21) Oscillator circuit Rf control
CS
RS
RD
WR
RE
2
RE
1
RE
0
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
0
1
1
0
0
0
0
1
1
0
1
FFL
Rf
2
Rf
1
Rf
0
( reset
a
{FFL, Rf
2
, Rf
1
, Rf
0
}=0
H
, read address : D
H
)
The feedback resistance of oscillator circuit can be changed by setting this register.
The frame frequency is changed according to the frequency of oscillator, and the oscillation frequency is
determined by the resistor value.
When you set the frame rate, please check the state of LCD display.
Rf
2
0
0
0
0
1
1
1
1
Rf
1
0
0
1
1
0
0
1
1
Rf
0
0
1
0
1
0
1
0
1
Feedback resistance size
Reference value
0.8 x reference value
0.9 x reference value
1.1 x reference value
1.2 x reference value
forbidden
forbidden
forbidden
FFL command
FFL=0
FFL=1
* The value of typical frame frequency f
FLM
Typ is under following condition.
Display mode : variable gradation display
1/82 Duty
{Rf
2
, Rf
1
, Rf
0
}=0
H
Setting oscillator frequency ( frame frequency f
FLM
). ( refer to DC characteristic )
normal oscillator frequency ( set frame frequency, f
FLM
to 73Hz(Typ))
high speed oscillator frequency ( set frame frequency, f
FLM
to 150Hz(Typ))
(34-22) Discharge control
CS
RS
RD
WR
RE
2
RE
1
RE
0
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
0
1
1
0
1
0
0
1
1
1
0
*
*
*
DIS
( reset
{DIS}=0
H
, read address
E
H
)
* : “Don’t care”
The capacitors connected between V
LCD
~V
4
and V
SS
can be discharged by this control. Please refer
to capacitor setting example.
DIS=”0”
DIS=”1”
-
discharge stop
-
start discharge
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