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參數(shù)資料
| 型號： | LP3950 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Color LED Driver with Audio Synchronizer |
| 中文描述： | 彩色LED驅(qū)動器與音頻同步 |
| 文件頁數(shù)： | 11/31頁 |
| 文件大?。?/td> | 1085K |
| 代理商： | LP3950 |
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I
2
C Compatible Interface
(Continued)
TRANSFERRING DATA
Every byte put on the SDA line must be eight bits long, with
the most significant bit (MSB) being transferred first. Each
byte of data has to be followed by an acknowledge bit. The
acknowledge related clock pulse is generated by the master.
The transmitter releases the SDA line (HIGH) during the
acknowledge clock pulse. The receiver must pull down the
SDA line during the 9th clock pulse, signifying an acknowl-
edge. A receiver which has been addressed must generate
an acknowledge after each byte has been received.
After the START condition, the I
2
C master sends a chip
address. This address is seven bits long followed by an
eighth bit which is a data direction bit (R/W). The LP3950
address is 50’h or 51’h. The selection of the address is done
by connecting SI pin to V
(51 hex) or GND (50 hex). For
the eighth bit, a “0” indicates a WRITE and a “1” indicates a
READ. The second byte selects the register to which the
data will be written. The third byte contains data to write to
the selected register.
When a READ function is to be accomplished, a WRITE
function must precede the READ function, as shown in
Figure 9
.
20129311
FIGURE 6. Start and Stop Conditions
20129312
FIGURE 7. I
2
C Chip Address
20129313
w = write (SDA = “0”)
r = read (SDA = “1”)
ack = acknowledge (SDA pulled down by either master or slave)
rs = repeated start
id = chip address, 50’h or 51’h for LP3950.
FIGURE 8. I
2
C Write Cycle
L
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP3950SL | Color LED Driver with Audio Synchronizer |
| LP3950SLX | Color LED Driver with Audio Synchronizer |
| LP3952 | 6-Channel Color LED Driver with Audio Synchronization |
| LP3952RLX | 6-Channel Color LED Driver with Audio Synchronization |
| LP3952RL | 6-Channel Color LED Driver with Audio Synchronization |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3950SL | 制造商:Texas Instruments 功能描述:LED DRIVER COLOUR POWERWISE LLP32 |
| LP3950SL/CSP1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LP3950SL/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3950SLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Color LED Driver with Audio Synchronizer |
| LP3950SLX/NOPB | 功能描述:IC LED DRVR WHITE BCKLGT 32-TSCP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:PowerWise® 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
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