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(yè)數(shù)： 30/52頁(yè)
文件大小： 167K
代理商： HD66420TA0
HD66420
30
Partial Display Function
The HD66420 can display only a part of a full display. The bias ratio of this partial display is 1/4 from V
CC
to GND, the duty ratio is 1/8 and rest of display is scanned with unselected levels. 8 levels of contrast can
be selected wit data bit 2 to 0 of R16. 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 DTY0, 1 bits (R1)
(3) set COM scanning direction (ADC bit)
(4) set display position (R11, R5)
(5) set contrast level (R16 data-bit 2 to 0)
The clock frequency may be 180kHz at normal display mode. When a partial display is driven, oscillation
frequency will be 18kHz, 1/10 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 21.
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.
Table 6 Partial Display Block
R11
ADC = 1
ADC = 0
H’00
COM1
→
COM8
COM9
→
COM16
COM17
→
COM24
COM25
→
COM32
COM33
→
COM40
COM80
→
COM73
COM72
→
COM65
COM64
→
COM57
COM56
→
COM49
COM48
→
COM41
COM8
→
COM1
COM16
→
COM9
COM24
→
COM17
COM32
→
COM25
COM40
→
COM33
COM73
→
COM80
COM65
→
COM72
COM57
→
COM64
COM49
→
COM56
COM41
→
COM48
H’01
H’02
H’03
H’04
H’05
H’06
H’07
H’08
H’09
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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*