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  • DTMF Decoding with a PIC16xxx

    This application note describes how to decode standard DTMF tones using the minimum number of external discrete components and a PIC. The two examples use a PIC which has an 8 bit timer and either a comparator or an ADC, although it can be modified for use on a PIC which has only digital I/O. The Ap ...

    /dl/30878.html

    标签: Decoding DTMF with PIC

    上传时间: 2013-11-21

    上传用户:zhaoke2005

  • PCA9517 Level translating I2C-

    The PCA9517 is a CMOS integrated circuit that provides level shifting between lowvoltage (down to 0.9 V) and higher voltage (2.7 V to 5.5 V) I2C-bus or SMBus applications.While retaining all the operating modes and features of the I2C-bus system during thelevel shifts, it also permits extension of t ...

    /dl/30990.html

    标签: translating Level 9517 PCA

    上传时间: 2013-12-25

    上传用户:wsf950131

  • PCA9540B 2channel I2C bus mult

    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.

    /dl/31000.html

    标签: 2channel 9540B 9540 mult

    上传时间: 2014-12-28

    上传用户:nshark

  • PCA9541 2 to 1 I2C-bus master

    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 ...

    /dl/31003.html

    标签: master C-bus 9541 PCA

    上传时间: 2013-10-09

    上传用户:3294322651

  • PCA9542A 2channel I2C bus mult

    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 inp ...

    /dl/31006.html

    标签: 2channel 9542A 9542 mult

    上传时间: 2013-12-07

    上传用户:europa_lin

  • PCA9549 Octal bus switch with

    The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlledby the I2C-bus. The low ON-state resistance of the switch allows connections to be madewith minimal propagation delay. Any individual A to B channel or combination of channelscan be selected via the I2C-bus, determi ...

    /dl/31009.html

    标签: switch Octal 9549 with

    上传时间: 2014-11-22

    上传用户:xcy122677

  • PCA9555 16bit I2C-bus and SMBu

    The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallelInput/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed toenhance the NXP Semiconductors family of I2C-bus I/O expanders. The improvementsinclude higher drive capability, 5 V I/O tolerance, lo ...

    /dl/31013.html

    标签: C-bus 9555 SMBu PCA

    上传时间: 2013-11-13

    上传用户:fredguo

  • PCA9670 Remote 8-bit IO expand

    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 ...

    /dl/31015.html

    标签: Remote expand 9670 PCA

    上传时间: 2013-10-15

    上传用户:stella2015

  • PCA9671 Remote 16-bit IO expan

    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 o ...

    /dl/31017.html

    标签: Remote expan 9671 PCA

    上传时间: 2013-10-12

    上传用户:laomv123

  • PCA9672 Remote 8-bit IO expand

    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 ...

    /dl/31019.html

    标签: Remote expand 9672 PCA

    上传时间: 2013-10-23

    上传用户:jasonheung