参数资料
型号: SC620ULTRT
厂商: Semtech
文件页数: 15/18页
文件大小: 0K
描述: IC LED DRIVER LINEAR 16-MLPQ
标准包装: 1
恒定电流:
拓扑: 线性(LDO),开路漏极
输出数: 8
内部驱动器:
类型 - 主要: 背光
类型 - 次要: RGB,白色 LED
频率: 400kHz
电源电压: 2.7 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 16-MLPQ
供应商设备封装: 16-MLPQ-UT(3x3)
包装: 剪切带 (CT)
工作温度: -40°C ~ 85°C
产品目录页面: 1359 (CN2011-ZH PDF)
其它名称: SC620ULCT
SC620
Using the I 2 C Serial Port
The SC620 is a read-write slave-mode I C device and com-
The I 2 C General Specification
2
plies with the Philips I 2 C standard Version 2.1 dated
January, 2000. The SC620 has eight user-accessible inter-
nal 8-bit registers. While there is no auto increment/decre-
ment capability in the SC620 I 2 C logic, a tight software
loop can be designed to randomly access the next register
independent 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 Specifications
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
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 allows
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 acknowl-
edges 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 per-
forming other tasks, the master can send a start or restart
condition to the device with a read command. The SC620
acknowledges this request and returns the data from the
register location that had previously been set up.
address. The slave acknowledges and the master sends
the appropriate 8 bit data byte. Once again the slave
acknowledges and the master terminates the transfer with
the stop condition [P].
15
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