HM17CM4096 ETC2 [List of Unclassifed Manufacturers], HM17CM4096 Datasheet - Page 37

• Manufacturer Part Number: HM17CM4096
• Description: 128XRGBX162 OUTPUT LCD DRIVER IC with built-in RAM
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

(18) LCD DRIVER CIRCUIT
(19) OSCILLATOR CIRCUIT
(20) POWER SUPPLY CIRCUIT
and 162 common outputs and outputs combined display data and FR signal.
display and boosting clock to the booster.
resistance length set value. To get optimum frame frequency, please check LCD and then set the
frequency of oscillator.
consists of voltage boosting circuit and voltage converting circuit and generates the voltages (V
V
power supply circuit for good image quality.
supply the V
C
partially.
next table.
1
5
This drive circuit generates four levels of LCD drive voltage. The circuit has 384 segment outputs
The common drive circuit that has shift register and outputs common scan signals sequentially.
HM17CM4096 has the CR oscillator. The output of oscillator is used as the timing signal source of
If external clock is used, feed the clock to OSC
And feedback resistance with command can set the inner oscillator circuit of HM17CM4096.
The frame frequency can be altered by changed oscillator frequency according to feedback
This block generates the voltages necessary for driving LCD panel. The power supply circuit
For large panel driving, it’s preferable to use external voltage source rather than to use built-in
When using external voltage source, disable the built-in power supply circuit(AMPON, DCON=‘00’),
According to power supply circuit control command input, the power supply circuit can be enabled
, V
+, C
DCON
2
1. All the built-in boosting circuit, converting circuit is not used. Open the ,C
2.Only the Boosting circuit is not used. Open the C
3.The conditions between V
, V
0
0
1
C
terminals, The power for converting circuit must be supplied through V
voltage must be supplied by V
5
-, C
4
3
-, C
, V
6
AMPON
External power supply and partial inner power circuit can be used together. Refer to the
+, C
5
4
LCD
+, C
. ) for LCD driving.
0
1
1
, V
6
5
-, V
-, C
1
, V
REF
Boosting circuit
6
+, C
2
, V
, V
Disable
Disable
Enable
6
3
-, V
REG
, V
, V
4
REF
and V
OUT
, V
EE
, V
terminals.
REG
REF
LCD
OUT
Converting circuit
, V
terminal.
, V
EE
externally and open the C
1
disable
terminals, LCD driving voltage should be applied externally.
enable
enable
, V
2
, V
3
, and V
1
pin or connect resistor between OSC
1
4
+,C
V
OUT
are V
1
-,C
, V
External voltage input
2
LCD
+,C
OUT
, V
V
2
1
OUT
-,C
+, C
1
, V
V
common
3
+,C
LCD
2
1
, V
-, C
3
3
OUT
-,C
, V
1
V
+, C
2
HM17CM4096
1
+, C
4
4
terminal and the reference
+,C
common
V
1
-, C
2
2
4
-, C
-,C
V
2
+, C
5
3
+,C
3
+, C
V
1
2
5
-, C
4
-,C
and OSC
remark
3
-, C
V
6
3
+,C
+, C
SS
1,3
2,3
.
4
+, C
6
LCD
-, V
3
- 37 -
-, C
2
,
.
4
OUT
-,
4
+,