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參數(shù)資料
| 型號(hào)： | HD66420TA0 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | LCD Display Driver |
| 中文描述： | 液晶顯示驅(qū)動(dòng)程序 |
| 文件頁數(shù)： | 39/52頁 |
| 文件大?。?/td> | 167K |
| 代理商： | HD66420TA0 |
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HD66420
39
0
V5O
V4O
V3O
V2O
V1O
VLCD
Example.1 LCD bias level
1/80 duty Display (1/9 bias, VLCD = 12V, GND = 0V)
V
0
1
2
3
4
5
6
7
8
9
10
11
12
07
0F
Contrast (R16)
17
1F
(maximum)
0
V5O
V4O
V3O
V2O
V1O
V
CC
Example.2 LCD bias level
Partial Display (1/4 bias, VCC = 5V, GND = 0V)
V
0
1
2
3
4
5
4
Contrast (R16)
7
(maximum)
Partial display
0.82 * (V
CC
-GND)
≤
V
CC
≤
0.997 (V
CC
-GND)
Partial display function uses 1/4 bias ratio from V
CC
to GND. Eight levels of contrast can be selected
with data bit 2 to 0 of R16.
LCD drive levels bias ratio:
LCD driving levels bias ratio can be selected from 1/6, 1/7, 1/8 or 1/9.
Power Supply:
The HD66420 needs the external power supply for LCD driving circuit. If this power
circuit has on/off control, the HD66420 controls the external power supply circuit by setting PWR bit.
External Power Supply Circuit:
When the internal operational amplifier cannot fully drive the LCD panel
used, V1O to V5O voltages can be supplied from external power supply circuit. Here, the AMP bit must be
set to 1 to turn off the internal power supply circuit.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66421 | (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) |
| HD66421TB0 | (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) |
| HD66503 | 240-Channel Common Driver with Internal LCD Timing Circuit(帶內(nèi)部LCD定時(shí)電路的240通道驅(qū)動(dòng)器) |
| HD66520T | 160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM(點(diǎn)陣圖形LCD160通道驅(qū)動(dòng)器) |
| HD66522 | 160-Channel Column Driver with Internal Bit-Map RAM for Reflective Color Display and Grayscale Display(點(diǎn)陣圖形LCD160通道驅(qū)動(dòng)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66421 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:(RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) |
| HD66421TB0 | 制造商:Renesas Electronics Corporation 功能描述: |
| HD66503 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HD66520 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| HD66520T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
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