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參數(shù)資料
| 型號： | HD66420 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) |
| 中文描述： | （內(nèi)存提供160通道4級灰度的點(diǎn)陣圖形液晶顯示驅(qū)動程序） |
| 文件頁數(shù)： | 1/52頁 |
| 文件大小： | 167K |
| 代理商： | HD66420 |
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1
HD66420
(RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot
Matrix Graphics LCD)
Description
The HD66420 drives and controls a dot matrix graphic LCD(Liquid Crystal Display) using a bit-mapped
method. It provides a highly flexible display through its on-chip display RAM, in which each two bits of
data can be used to turn on or off one dot on LCD panel with four-level grey scale.
A single HD66420 can display a maximum of 160x80 dots using its powerful display control functions. It
can display only eight lines out of eighty lines. This function realize low power consumption because high
voltage for driving LCD is not needed.
An MPU can access HD66420 at any time, because the MPU operations are asynchronous with the
HD66420’s system clock and display operation.
Its low-voltage operation at 2.2 to 5.5V and standby function provides low power dissipation, making the
HD66420 suitable for small portable device applications.
Features
Built-in bit-mapped display RAM: 25.6kbits (160
×
80
×
2 bits)
Grey scale display: PWM four-level grey scale can be selected from 32 levels
Grey scale memory management: Packed pixel
Partial display: Eight-lines data can be displayed in any place
An 80-system MPU interface
Power supply voltage for operation : 2.2V to 5.5V
Power supply voltage for LCD : 13 V max.
Selectable multiplex duty ratio: 1/8, 1/32, 1/64, 1/80
Built-in oscillator: external resister
Low power consumption:
55
μ
A typ. 80
μ
A max. during display
0.1
μ
A typ. 5
μ
A max. during standby
Circuits for generating LCD driving voltage : Contrast control, Operational amplifier, and Resistive
dividers
Internal resistive divider: programmable bias rate
32-level programmable contrast control
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66420TA0 | LCD Display Driver |
| 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定時電路的240通道驅(qū)動器) |
| HD66520T | 160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM(點(diǎn)陣圖形LCD160通道驅(qū)動器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66420TA0 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:LCD Display Driver |
| 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 |
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