參數(shù)資料
型號(hào)： HM17CM4096
廠商： Electronic Theatre Controls, Inc.
英文描述： 128XRGBX162 OUTPUT LCD DRIVER IC with built-in RAM
中文描述： 128XRGBX162輸出LCD驅(qū)動(dòng)器內(nèi)置內(nèi)存
文件頁(yè)數(shù)： 39/67頁(yè)
文件大?。?/td> 1117K
代理商： HM17CM4096
HM17CM4096
- 39 -
(24) REFERENCE VOLTAGE GENERATION CIRCUIT
The reference voltage generation circuit is within voltage converting circuit.
This circuit generates reference voltage V
BA
terminal for using at regulator circuit through. The
output voltage level from V
BA
terminal is as following description.
V
BA
= V
EE
x 0.9
The LCD driving voltages can be made by applying reference voltage to reference voltage input
terminal V
REF
.
(25) LCD DRIVING VOLTAGE GENERATION CIRCUIT
The generation circuit of LCD driving voltage is within voltage converting circuit and generates
voltages V
LCD
, V
1
, V
2
, V
3
, V
4
by resistively dividing V
LCD
into 4 levels.
The bias ratio of LCD driving voltages can be one of 1/5, 1/6, 1/7, 1/8, 1/9, 1/10, 1/11, 1/12.
When using built-in power supply circuit, you should connect voltage stabilization capacitor CA
2
at
each of LCD power terminals. There is need for selecting the coefficient of capacitor CA
2
after
display the LCD.
When using external voltage supply, disable the built-in power supply circuit(AMPON, DCON=‘00’),
supply the V
OUT
, V
LCD
, V
1
, V
2
, V
3
, V
4
voltages 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
EE
, V
REF
, V
REG
terminals.
When using external voltage source and parts of built-in voltage converting circuit, the terminals of
C
1
+ , C
1
- , C
2
+ , C
2
- , C
3
+ , C
3
- , C
4
+ , C
4
- , C
5
+ , C
5
- , C
6
+ , C
6
- should be open because boosting
circuit is not activated, you should supply reference voltage through V
REF
terminal and the voltage for
voltage converting circuit at V
OUT
.
Connecting stabilization capacitor CA
3
at V
REG
terminal is recommended.
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