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參數(shù)資料
| 型號： | S-4544A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | LCD Controller-Driver With Built-in 8-Bit and Serial Interfaces(內(nèi)置8位和串行接口的LCD控制器-驅(qū)動器) |
| 中文描述： | LCD控制器與- 8內(nèi)置驅(qū)動器位和串行接口（內(nèi)置8位和串行接口的液晶顯示控制器-驅(qū)動器） |
| 文件頁數(shù)： | 27/39頁 |
| 文件大小： | 237K |
| 代理商： | S-4544A |
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LCD Controller-Driver
S-4544A
26
Seiko Instruments Inc.
17. LCD Power Supply Circuit ON/OFF
D0 : 0
LCD Power Supply Circuit OFF
D0 : 1
LCD Power Supply Circuit ON
Selects ON or OFF of a built-in LCD power supply circuit. When the LCD power supply circuit is ON, each function
of the booster, LCD voltage adjustment circuit (voltage regulator, LCD voltage fine adjustment circuit), bias resistor,
and voltage follower becomes valid by setting pins FNC1 and FNC2.
The LCD power supply circuit connected to pins FNC1 and FNC2 starts its operation earlier than the LCD Power
Supply Circuit ON/OFF command.
18. Normal Display/ Icon Only Display
D2 : 0
Normal Display
D2 : 1
Icon Only Display
Regardless of the content of the display RAM, displays icon only and the LCD panel compelled to be off.
Four kinds of boosting frequency can be set using boosting control data.
When reducing the boosting frequency, the gray scale of the icon display differs depending upon the panel size or
the value of the boosting capacitor. Determine the boosting frequency by optimizing the contrast of the LCD panel
experimentally. Also, take into consideration affect of noises due to boosting frequency to the system.
When executing the Icon Only Display command during Display Reverse, the icon only is displayed and other
displays go off.
A0
RDX
R/WX
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
0
0
1
0
0
1
0
0
1
A0
RDX
R/WX
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
1
0
0
0
0
1
D1
D0
Boosting Frequency
0
0
1
1
0
1
0
1
f
OSC
/ 2
f
OSC
/ 4
f
OSC
/ 8
f
OSC
/ 16
Boosting
Control Data
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