參數(shù)資料
型號(hào)： SC620
廠商： Semtech Corporation
英文描述： Octal LED Driver, General Purpose Current Sink with Serial Interface
中文描述： 八路LED驅(qū)動(dòng)器，通用吸電流的串行接口
文件頁(yè)數(shù)： 9/16頁(yè)
文件大?。?/td> 363K
代理商： SC620
The I
2
C General Speci
fi
cation
The SC620 is a read-write slave-mode I
2
C device and com-
plies with the Philips I
2
C standard Version 2.1 dated Janu-
ary, 2000. The SC620 has eight user-accessible internal
8-bit registers. While there is no auto increment/decrement
capability in the SC620 I
2
C logic, a tight software loop can
be designed to randomly access the next register indepen-
dent of which register you begin accessing. The start and
stop commands frame the data-packet and the repeat start
condition is allowed if necessary.
SC620 Limitations to the I
2
C Speci
fi
cations
Seven bit addressing is used and ten bit addressing is not
allowed. Any general call address will be ignored by the
SC620. The SC620 is not CBUS compatible. The SC620
can operate in standard mode (100kbit/s) or fast mode
(400kbit/s).
Supported Formats:
Direct Format - Write
The simplest format for an I
2
C write is Direct Format. After
the start condition [S], the slave address is sent, followed
by an eighth bit indicating a write. The SC620 I
2
C then
acknowledges that it is being addressed, and the master
responds with an 8 bit data byte consisting of the register
address. The slave acknowledges and the master sends
the appropriate 8 bit data byte. Once again the slave ac-
knowledges and the master terminates the transfer with
the stop condition [P].
Using the I
2
C Serial Port
Combined Format - Read
After the start condition [S], the slave address is sent, fol-
lowed by an eighth bit indicating a write. The SC620 I
2
C
then acknowledges that it is being addressed, and the
master responds with an 8 bit data byte consisting of the
register address. The slave acknowledges and the master
sends the repeated start condition [Sr]. Once again, the
slave address is sent, followed by an eighth bit indicating
a read. The slave responds with an acknowledge and the
previously addressed 8 bit data byte; the master then sends
a non-acknowledge (NACK). Finally, the master terminates
the transfer with the stop condition [P].
Stop Separated Reads
Stop separated reads can also be used. This format al-
lows a master to set up the register address pointer for
a read and return to that slave at a later time to read the
data. In this format the slave address followed by a write
command are sent after a start [S] condition. The SC620
then acknowledges it is being addressed, and the master
responds with the 8-bit register address. The master sends
a stop or restart condition and may then address another
slave. After performing other tasks, the master can send
a start or restart condition to the SC620 with a read com-
mand. The SC620 acknowledges this request and returns
the data from the register location that had previously
been set up.
9
2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC620
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SC620 RPL 制造商:Schneider Electric 功能描述:REPAIR/REPLACE - Bulk
SC620_07 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:Octal LED Driver, General Purpose Current Sink with Serial Interface
SC620_09 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:Octal LED Driver,General Purpose Current Sink With Serial Interface
SC620-DF 制造商:Schneider Electric 功能描述:DEFECTIVE - Bulk
SC620EVB 制造商:SEMTECH 制造商全稱(chēng):Semtech Corporation 功能描述:Octal LED Driver,General Purpose Current Sink With Serial Interface
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