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參數(shù)資料
| 型號： | HM17CM256 |
| 廠商： | HYNIX SEMICONDUCTOR INC |
| 元件分類： | 顯示驅(qū)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(shù)： | 60/111頁 |
| 文件大?。?/td> | 2094K |
| 代理商： | HM17CM256 |
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HM17CM256
- 60 -
(34-10) Power control register set
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
read address :B
H
)
1
0
1
1
AMPON
HALT
DCON
ACL
( reset :{AMPON, HALT, DCON, ACL}=0
H
a) ACL command
This command initializes internal circuit and it is valid only at master operating.
ACL=”0”: normal state
ACL=”1”: initialization ON
Just after the execution of ACL command (ACL=”1”), D
0
bit is set to 1. But as the initialization process
goes on internally, D
0
is reset to “0”.
When ACL command is executed, internal reset signal is produced by using local display clock ( clock
from internal oscillator or from external resistor oscillation mode ).
So, after ACL command is executed, it needs to WAIT at least 2 period of the clock for next process
beginning.
ACL command is effective only at master mode operation because it uses original oscillator clock.
It is prohibited for slave mode operation to use the internal oscillator or external oscillator.
So, ACL command is impossible at slave mode. Please reset the slave device at RES terminal, when
needed.
b) DCON command
ON/OFF the internal voltage boosting circuit.
DCON=”0”: boosting circuit OFF
DCON=”1”: boosting circuit ON
c) HALT command
Power save mode ON/OFF control
HALT=”0”: normal state
HALT=”1”: power save state
The power consumption is decreased near static current at power save mode.
States of each sub-block in power save mode are as follow.
Oscillator, built-in power supply block stop.
Stop driving LCD panel, segment drive, the outputs of common driver are all set to V
SS
level.
Clock input from OSC
1
port is disabled.
Display RAM data are conserved.
Operational modes are preserved as those before power save command was executed.
V
LCD
, V
1
~ V
4
become high impedance state.
Make display OFF state before power save mode by HALT command.
And when returning from power save mode, you should display ON after oscillator, power circuit is
activated stably.
After display OFF and HALT command, if the display is turned ON before oscillator and power circuit is
not activated stably, wrong display can be appeared.
d) AMPON command
ON/OFF the internal OP. amplifier circuit of power block (voltage regulator block, electric volume,
voltage converting circuit ).
AMPON=”0”: internal power circuit OP. Amplifier OFF
AMPON=”1”: internal power circuit OP. Amplifier ON
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