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參數(shù)資料
| 型號： | LP3943 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | RGB/White/Blue 16-LED Fun Light Driver |
| 中文描述： | 的RGB /白/藍(lán)16的LED燈驅(qū)動器樂 |
| 文件頁數(shù)： | 8/13頁 |
| 文件大小： | 264K |
| 代理商： | LP3943 |
Application Notes
(Continued)
AUTO INCREMENT
Auto increment is a special feature supported by the LP3943
to eliminate repeated chip and register addressing when
data are to be written to or read from registers in sequential
order. The auto increment bit is inside the register address
byte, as shown in
Figure 6
. Auto increment is enabled when
this bit is programmed to “1” and disabled when it is pro-
grammed to “0”.
Bits 5, 6 and 7 in the register address byte should always be
zero.
In the READ mode, when auto increment is enabled, I
2
C
master could receive any number of bytes from LP3943
without selecting chip address and register address again.
Every time the I
2
C master reads a register, the LP3943 will
increment the register address and the next data register will
be read. When I
2
C master reaches the last register (09H),
the register address will roll over to 00H.
In the WRITE mode, when auto increment is enabled, the
LP3943 will increment the register address every time I
2
C
master writes to register. When the last register (09H regis-
ter) is reached, the register address will roll over to 02H, not
00H, because the first two registers in LP3943 are read-only
registers. It is possible to write to the first two registers
independently, and the LP3943 will acknowledge, but the
data will be ignored.
If auto increment is disabled, and the I
2
C master does not
change register address, it will continue to write data into the
same register.
20079611
FIGURE 6. Register Address Byte
20079612
FIGURE 7. Programming with Auto Increment Disabled (in WRITE Mode)
20079613
FIGURE 8. Programming with Auto Increment Enabled (in WRITE Mode)
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3943ISQ | 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 |
| LP3943ISQ/NOPB | 功能描述:LED照明驅(qū)動器 Funlight Led Driver 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 |
| LP3943ISQEV | 功能描述:電源管理IC開發(fā)工具 LP3943 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LP3943ISQEV/NOPB | 制造商:Texas Instruments 功能描述:Evaluation Board For LED Driver 16 Segment 2.5V/3.3V/5V T/R |
| LP3943ISQX | 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 |
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