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參數(shù)資料
| 型號(hào)： | LP3944ISQX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | RGB/White/Blue 8-LED Fun Light Driver |
| 中文描述： | LED DISPLAY DRIVER, QCC24 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 249K |
| 代理商： | LP3944ISQX |
Application Notes
(Continued)
AUTO INCREMENT
Auto increment is a special feature supported by the LP3944
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”.
In the READ mode, when auto increment is enabled, I
2
C
master could receive any number of bytes from LP3944
without selecting chip address and register address again.
Every time the I
2
C master reads a register, the LP3944 will
increment the register address and the next data register will
be read. When I
2
C master reaches the last register (09H
register), the register address will roll over to 00H.
In the WRITE mode, when auto increment is enabled, the
LP3944 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,
because the first two registers in LP3944 are read-only
registers. It is possible to write to these two registers, and the
LP3944 will acknowledge, but the data will be ignored.
In the LP3944, registers 0x01, 0x08 and 0x09 are not func-
tional. However, it is still necessary to read from 0x01 and to
write to 0x08 and 0x09 inAuto Increment mode. They cannot
be skipped.
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.
20085311
FIGURE 6. Register Address Byte
20085312
FIGURE 7. Programming with Auto Increment Disabled (in WRITE Mode)
20085313
FIGURE 8. Programming with Auto Increment Enabled (in WRITE Mode)
L
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| LP3944 | RGB/White/Blue 8-LED Fun Light Driver |
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| LP3945ILD | Battery Charge Management System |
| LP3945ILDX | Battery Charge Management System |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3944ISQX/NOPB | 功能描述:LED照明驅(qū)動(dòng)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 |
| LP3945 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management System |
| LP3945ILD | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management System |
| LP3945ILDX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management System |
| LP3945LD | 功能描述:IC MANAGEMENT BATT CHARGE 14-LLP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
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