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參數資料
型號： HM17CM256
廠商： HYNIX SEMICONDUCTOR INC
元件分類： 顯示驅動器
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
文件頁數： 38/111頁
文件大小： 2094K
代理商： HM17CM256
HM17CM256
- 38 -
This block generates the voltages necessary for driving LCD panel. The power supply circuit
consists of voltage boosting circuit and voltage converting circuit and generates the voltages (V
LCD
,
V
1
, V
2
, V
3
, V
4
. ) for LCD driving.
For large panel driving, it’s preferable to use external voltage source rather than to use built-in
power supply circuit for good image quality.
When using external voltage source, disable the built-in power supply circuit(AMPON, DCON=‘00’),
supply the V
LCD
, V
1
, V
2
, V
3
, V
4
and V
OUT
externally and open the C
1
+, C
1
-, C
2
+, C
2
-, C
3
+, C
3
-, C
4
+, C
4
-,
C
5
+, C
5
-, C
6
+, C
6
-, V
REF
, V
REG
, V
EE
terminals.
According to power supply circuit control command input, the power supply circuit can be enabled
partially. External power supply and partial inner power circuit can be used together. Refer to the
next table.
DCON AMPON
Boosting circuit Converting circuit
0
0
Disable
0
1
Disable
1
1
Enable
External voltage input
V
OUT
, V
LCD
, V
1
, V
2
, V
3
, V
4
common
V
OUT
common
remark
disable
enable
enable
u
1,3
u
2,3
v
1. All the built-in boosting circuit, converting circuit is not used. Open the ,C
1
+, C
1
-, C
2
+, C
2
-, C
3
+, C
3
-, C
4
+,
C
4
-, C
5
+, C
5
-, C
6
+, C
6
-, V
REF
, V
REG
, V
EE
terminals, LCD driving voltage should be applied externally.
2.Only the Boosting circuit is not used. Open the C
1
+,C
1
-,C
2
+,C
2
-,C
3
+,C
3
-,C
4
+,C
4
-,C
5
+,C
5
-,C
6
+,C
6
-, V
OUT
terminals, The power for converting circuit must be supplied through V
OUT
terminal and the reference
voltage must be supplied by V
REF
terminal.
3.The conditions between V
OUT
, V
LCD
, V
1
, V
2
, V
3
, and V
4
are V
OUT
≥
V
LCD
≥
V
1
≥
V
2
≥
V
3
≥
V
4
≥
V
SS
.
v
v
(23) VOLTAGE BOOSTING CIRCUIT
By connecting capacitor CA
1
between C
1
+ and C
1
-, C
2
+ and C
2
-, C
3
+ and C
3
-, C
4
+ and C
4
-, C
5
+
and C
5
- , C
6
+ and C
6
-, V
OUT
and V
SS
, n-time boosted voltage of V
EE
- V
SS
can be generated through
V
OUT
port. The boosting coefficient can be set by command and 2-times/ 3-times / 4-times/ 5-
times/ 6-times/ 7-times boosted voltage is output through V
OUT
port.
At application, specific boosting coefficient is used, refer to the following description.
At 2-times boosting is designed, connect boosting capacitor CA
1
between C
1
+ and C
1
- , and
open C
2
+, C
2
-, C
3
+, C
3
-, C
4
+, C
4
-, C
5
+, C
5
-, C
6
+, C
6
- terminals.
At 3-times boosting is designed, connect boosting capacitor CA
1
between C
1
+ and C
1
- , C
2
+
and C
2
- , and open C
3
+,C
3
-, C
4
+, C
4
-, C
5
+, C
5
-, C
6
+, C
6
- terminals.
At 4-times boosting is designed, connect boosting capacitor CA
1
between C
1
+ and C
1
- , C
2
+
and C
2
- , C
3
+ and C
3
- , and open C
4
+, C
4
-, C
5
+, C
5
-, C
6
+, C
6
- terminals
At 5-times/ 6-times/ 7-times boosting are same structures with upper case.
Special care should be taken so that the voltage of VOUT would not exceed 18V MAX.
VOUT voltage exceeding 18V can cause malfunction and reliability problem.
3-times boosting
x
y
z
7-times boosting
V
SS
=0V
V
EE
=3V
V
OUT
=9V
V
OUT
=17.5V
V
SS
=0V
V
EE
=2.5V
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相關代理商/技術參數
參數描述
HM17CM4096 制造商:未知廠家 制造商全稱:未知廠家 功能描述:128XRGBX162 OUTPUT LCD DRIVER IC with built-in RAM
HM18 制造商:BITECH 制造商全稱:Bi technologies 功能描述:Common-Mode Chokes
HM180K 制造商:Ohmite Mfg Co 功能描述:
HM18-10001 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EE Style Common-Mode Chokes
HM18-10002 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EE Style Common-Mode Chokes
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