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參數資料
| 型號： | HD66421 |
| 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： | （內存提供160通道4級灰度的點陣圖形液晶顯示驅動程序） |
| 文件頁數： | 1/46頁 |
| 文件大小： | 201K |
| 代理商： | HD66421 |
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Preliminary
Rev. 1.1E '99.02.10
HD66421
(RAM-Provided 160 Channel 4-Level Grey Scale Driver
for Dot Matrix Graphics LCD)
Description
The HD66421 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 HD66421 can display a maximum of
160x100 dots using its powerful display
control functions. It can display only eight
lines out of one hundred lines.
This function realize low power consumption
because high voltage for driving LCD is not
needed.
An MPU can access HD66421 at any time,
because the MPU operations are asynchronous
with the HD66421's system clock and display
operation.
Its low-voltage operation at 2.2 to 5.5V and
standby
function
provides
-dissipation, making the HD66421 suitable for
small portable device applications.
low
power
Features
Built-in bit-mapped display RAM: 30kbits
(160 x 100 x 2 bits)
Grey scale display: PWM four-level grey
scale can be selected from 32 levels
Grey scale memory management: Packed
pixel
Monochrome display: two planes can be
selected. One plane is displayed while the other
plane is being written.
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 : 18 V max.
Selectable multiplex duty ratio: 1/8, 1/64, 1/80,
1/100
LCD driving alternating cycle: 7, 11, 13 lines
or flame
Built-in oscillator: external resister
Low power consumption:
Circuits for generating LCD driving voltage :
Contrast control, Operational amplifier, and
Resistive dividers
Internal resistive divider: programmable bias
rate
32-level programmable contrast control
Wide range of instructions
reversible display, display on/off, vertical
display scroll, blink, reversible address,
read-modify-write mode
Package: TCP
Type No.
HD66421TB0
HCD66421BP
Package
TCP
Die with gold bump
Ordering Information
HD66421
1
相關PDF資料 |
PDF描述 |
|---|---|
| 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(帶內部LCD定時電路的240通道驅動器) |
| HD66520T | 160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM(點陣圖形LCD160通道驅動器) |
| HD66522 | 160-Channel Column Driver with Internal Bit-Map RAM for Reflective Color Display and Grayscale Display(點陣圖形LCD160通道驅動器) |
| HD66523R | 240-Channel Common Driver with Internal LCD Timing Circuit(帶內部LCD定時電路的240通道驅動器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| HD66520TA0 | 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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