用户程序示例教程 The Blinky project is a simple program for the LPC2138using Keil MCB2130 Microcontroller Board. It blinks the LEDs AT speed according to the Potentiometer setting and prints the current seting to the Serial Port 1.In addition it generATes a sine wave with an adjustable frequency on the speaker of the board.
上传时间： 2014-12-27
上传用户：hongmo
The XL6003 regulATor is fixed frequency PWM Boost (step-up) DC/DC converter, capable ofdriving 1050mA load current with excellent line and load regulATion. The regulATor is simple to use because it includes internal frequency compensATion and a fixed-frequency oscillATor so thAT it requires a minimum number of external components to work. The XL6003 could directly drive 5~10 3W LED units AT VIN=12V.
上传时间： 2013-11-07
上传用户：xy@1314
The PCA9540B is a 1-of-2 bidirectional translATing multiplexer, controlled via the I2C-bus.The SCL/SDA upstream pair fans out to two SCx/SDx downstream pairs, or channels.Only one SCx/SDx channel is selected AT a time, determined by the contents of theprogrammable control register.
上传时间： 2014-12-28
上传用户：nshark
The PCA9541 is a 2-to-1 I2C-bus master selector designed for high reliability dual masterI2C-bus applicATions where system operATion is required, even when one master fails orthe controller card is removed for maintenance. The two masters (for example, primaryand back-up) are locATed on separATe I2C-buses thAT connect to the same downstreamI2C-bus slave devices. I2C-bus commands are sent by either I2C-bus master and are usedto select one master AT a time. Either master AT any time can gain control of the slavedevices if the other master is disabled or removed from the system. The failed master isisolATed from the system and will not affect communicATion between the on-line masterand the slave devices on the downstream I2C-bus.
上传时间： 2013-10-09
上传用户：3294322651
The PCA9542A is a 1-of-2 bidirectional translATing multiplexer, controlled via the I2C-bus.The SCL/SDA upstream pair fans out to two SCx/SDx downstream pairs, or channels.Only one SCx/SDx channel is selected AT a time, determined by the contents of theprogrammable control register. Two interrupt inputs, INT0 and INT1, one for each of theSCx/SDx downstream pairs, are provided. One interrupt output, INT, which acts as anAND of the two interrupt inputs, is provided.
上传时间： 2013-12-07
上传用户：europa_lin
The PCA9670 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9670 is a drop-in upgrade for the PCF8574 providing higher Fast-mode Plus(Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so thAT the output can support PWMdimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so thAT many more devicescan be on the bus without the need for bus buffers, higher total package sink capacity(200 mA versus 100 mA) thAT supports having all 25 mA LEDs on AT the same time andmore device addresses (64 versus 8) are available to allow many more devices on the buswithout address conflicts.
上传时间： 2013-10-15
上传用户：stella2015
The PCA9547 is an octal bidirectional translATing multiplexer controlled by the I2C-bus.The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Only oneSCx/SDx channel can be selected AT a time, determined by the contents of theprogrammable control register. The device powers up with Channel 0 connected, allowingimmediATe communicATion between the master and downstream devices on thAT channel.
上传时间： 2014-12-28
上传用户：270189020
The PCA9671 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plus(Fm+) family.The PCA9671 is a drop in upgrade for the PCF8575 providing higher I2C-bus speeds(1 MHz versus 400 kHz) so thAT the output can support PWM dimming of LEDs, higherI2C-bus drive (30 mA versus 3 mA) so thAT many more devices can be on the bus withoutthe need for bus buffers, higher total package sink capacity (400 mA versus 100 mA) thATsupports having all 25 mA LEDs on AT the same time and more device addresses (64versus 8) to allow many more devices on the bus without address conflicts.
上传时间： 2013-10-12
上传用户：laomv123
The PCA9672 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9672 is a drop-in upgrade for the PCF8574 providing higher Fast-mode Plus(Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so thAT the output can support PWMdimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so thAT many more devicescan be on the bus without the need for bus buffers, higher total package sink capacity(200 mA versus 100 mA) thAT supports having all LEDs on AT the same time and moredevice addresses (16 versus 8) are available to allow many more devices on the buswithout address conflicts.
上传时间： 2013-10-23
上传用户：jasonheung
The PCA9673 provides general purpose remote I/O expansion for most microcontrollerfamilies via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plusfamily.The PCA9673 is a drop in upgrade for the PCF8575 providing higher Fast-mode Plus(Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so thAT the output can support PWMdimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so thAT many more devicescan be on the bus without the need for bus buffers, higher total package sink capacity(400 mA versus 100 mA) thAT supports having all 25 mA LEDs on AT the same time andmore device addresses (16 versus 8) are available to allow many more devices on the buswithout address conflicts.
上传时间： 2013-10-29
上传用户：wkchong
