- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370471 > HD66421 (Hitachi,Ltd.) (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD) PDF資料下載
參數(shù)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(shù)： | 28/46頁 |
| 文件大?。?/td> | 201K |
| 代理商： | HD66421 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁當前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁
Preliminary
Rev. 1.1E '99.02.10
HD66421
Partial Display Function
The HD66421 can display only a part of a full
display. The duty ratio of this partial display is 1/8
and rest of display is scanned with unselected
levels. The position of this partial display can be
located at any position with using partial display
position register. To launch this mode, following
processes are needed:
(1) supplied voltage to VLCD must be cut off,
PWR bit can be used if external voltage supplier is
controlled with DCON output (R0)
(2) set DTY bits (R1)
(3) set display position (R11)
(4) set contrast level (R16)
The clock frequency may be 220kHz at normal
display mode. When a partial display is driven,
oscillation frequency will be 18kHz, 1/12.5 of that
of normal display mode. This function is useful for
lower power dissipation. To change clock
frequency, follow the process which is showed in
Figure 28.
Warning:
VLCD must be cut off when partial display
mode is launched. Vcc is supplied to LCD
driving circuit instead of VLCD. So if VLCD
is supplied externally during partial display
mode, Vcc short-circuit to VLCD.
28
Figure 24 Partial Display
Table 6 Partial Display Block
H'00
H'01
H'02
H'03
H'04
H'05
H'06
H'07
H'08
H'09
H'0A
H'0B
R11
COM1
COM9
COM17
COM25
COM33
COM41
COM100
COM92
COM84
COM76
COM68
COM60
–>
–>
–>
–>
–>
–>
–>
–>
–>
–>
–>
–>
COM8
COM16
COM24
COM32
COM40
COM48
COM93
COM85
COM77
COM69
COM61
COM53
COM1
COM9
COM17
COM25
COM33
COM41
COM100
COM92
COM84
COM76
COM68
COM60
–>
–>
–>
–>
–>
–>
–>
–>
–>
–>
–>
–>
COM8
COM16
COM24
COM32
COM40
COM48
COM93
COM85
COM77
COM69
COM61
COM53
ADC= 0
ADC= 1
Start line R5
R5+7
Y address
H'00
Display
RAM
H'63
R11=H'04
LCD Panel
ABCD
ABCD
COM33
COM40
COM1
COM100
COM49,COM50 (Not used)
COM51,COM52 (Not used)
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(shù) |
參數(shù)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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。