參數(shù)資料
型號(hào)： STCF03
廠商： 意法半導(dǎo)體
元件分類： LED驅(qū)動(dòng)器
英文描述： High power white LED driver with I2C⑩ interface
中文描述： 大功率白光LED驅(qū)動(dòng)器具有I2C⑩接口
文件頁(yè)數(shù)： 16/35頁(yè)
文件大?。?/td> 455K
代理商： STCF03
Introduction
STCF03
16/35
7.7
Acknowledge
The master (μP) puts a resistive HIGH level on the SDA line during the acknowledge clock
pulse (see
Figure 7
). The peripheral (STCF03) that acknowledges has to pull-down (LOW)
the SDA line during the acknowledge clock pulse, so that the SDA line is stable LOW during
this clock pulse. The peripheral which has been addressed has to generate an acknowledge
pulse after the reception of each byte, otherwise the SDA line remains at the HIGH level
during the ninth clock pulse duration. In this case the master transmitter can generate the
STOP information in order to abort the transfer. The STCF03 won't generate the
acknowledge if the V
I
supply is below the undervoltage lockout threshold.
Acknowledge on I
2
C Bus
7.8
Writing to a single register
Writing to a single register starts with a START bit followed by the 7 bit device address of
STCF03. The 8
th
bit is the R/W bit, which is 0 in this case. R/W = 1 means a reading
operation. Then the master waits for an acknowledge from STCF03. Then the 8 bit address
of register is sent to STCF03. It is also followed by an acknowledge pulse. The last
transmitted byte is the data that is going to be written to the register. It is again followed by
an acknowledge pulse from STCF03. Then master generates a STOP bit and the
communication is over. See
Figure 8
below.
Figure 7.
Table 8. Interface protocol
Device address + R/W bit
Register address
Data
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
S
T
A
R
T
M
S
B
L
S
B
R
W
A
C
K
M
S
B
L
S
B
A
C
K
M
S
B
L
S
B
A
C
K
S
T
O
P
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STCF03I 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High power white LED driver with IC interface
STCF03I_08 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High power white LED driver with IC interface
STCF03ITBR 功能描述:LED照明驅(qū)動(dòng)器 HP white 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
STCF03PNR 功能描述:LED照明驅(qū)動(dòng)器 Hi Pwr white 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
STCF03TBR 功能描述:LED照明驅(qū)動(dòng)器 HP white 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
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