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參數(shù)資料
| 型號： | LM27966SQ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | White LED Driver with I2C Compatible Interface |
| 中文描述： | LED DISPLAY DRIVER, QCC24 |
| 封裝： | 4 X 4 MM, 0.80 MM HEIGHT, LLP-24 |
| 文件頁數(shù)： | 9/13頁 |
| 文件大?。?/td> | 673K |
| 代理商： | LM27966SQ |
Circuit Description
(Continued)
line during the 9th clock pulse, signifying an acknowledge.
The LM27966 generates 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 LM27966
address is 36h. 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.
I
2
C COMPATIBLE CHIP ADDRESS
The chip address for LM27966 is 0110110, or 36h.
INTERNAL REGISTERS OF LM27966
Register
General Purpose
Register
Main Display
Brightness Control
Register
Auxiliary LED
Brightness Control
Register
Internal Hex
Address
10h
Power On
Value
0010 0000
A0h
1110 0000
C0h
1111 1100
Note:
EN-MAIN: Enables Dx LED drivers (Main Display)
T0: Must be set to ’0’
EN-AUX: Enables D
AUX
LED driver (Indicator Lighting)
EN-D5: Enables D5 LED voltage sense
T1: Must be set to ’0’
Note:
Dx4-Dx0: Sets Brightness for Dx pins (Main Display). 11111=Fullscale
20190112
FIGURE 3. Write Cycle
w = write (SDIO = "0")
r = read (SDIO = "1")
ack = acknowledge (SDIO pulled down by either master or slave)
rs = repeated start
id = chip address, 36h for LM27966
20190109
FIGURE 4. Chip Address
20190108
FIGURE 5. General Purpose Register Description
Internal Hex Address: 10h
20190105
20190107
FIGURE 6. Brightness Control Register Description
Internal Hex Address: 0xA0 (Main Display), 0xC0
(D
AUX
)
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM27966SQ | 制造商:Texas Instruments 功能描述:LED DRIVER I2C CONTROL POWERWISE |
| LM27966SQ/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 |
| LM27966SQX | 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 |
| LM27966SQX/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 |
| LM2796TL | 制造商:Texas Instruments 功能描述:LED DRVR 7Segment 3.3V/5V 18-Pin uSMD T/R |
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