The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for
SMBus and I2C-bus applications. The PCA9557 consists of an 8-bit input port register,
8-bit output port register, and an I2C-bus/SMBus interface. It has low current consumption
and a high-impedance open-drain output pin, IO0.
The system master can enable the PCA9557’s I/O as either input or output by writing to
the configuration register. The system master can also invert the PCA9557 inputs by
writing to the active HIGH polarity inversion register. Finally, the system master can reset
the PCA9557 in the event of a time-out by asserting a LOW in the reset input.
The power-on reset puts the registers in their default state and initializes the
I2C-bus/SMBus state machine. The RESET pin causes the same reset/initialization to
occur without de-powering the part.
资源简介：The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus and I2C-bus applications. The PCA9557 consists of an 8-bit input port register, 8-bit output port register, and an I2C-bus/SMBus interface. It ...
上传时间： 2014-01-18
上传用户：bs2005
资源简介：电子技术基础--模拟电子技术 电子教案 PPT版
上传时间： 2013-04-15
上传用户：eeworm
资源简介：The PCA9534 is a 16-pin CMOS device that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. The impr...
上传时间： 2013-10-10
上传用户：inwins
资源简介：The CAT9534 is an 8-bit parallel input/output portexpander for I²C and SMBus compatible applications.These I/O expanders provide a simple solution inapplications where additional I/Os are needed: sensors,power switches, LEDs, pushbuttons, ...
上传时间： 2013-11-09
上传用户：liulinshan2010
资源简介：The PCA9536 is an 8-pin CMOS device that provides 4 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. I/O expande...
上传时间： 2013-10-09
上传用户：731140412
资源简介：The PCA9538 is a 16-pin CMOS device that provides 8 bits of General Purpose parallelInput/Output (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applicationsand was developed to enhance the NXP Semiconductors family of I2C-bus I...
上传时间： 2014-01-24
上传用户：youmo81
资源简介：The PCA9537 is a 10-pin CMOS device that provides 4 bits of General Purpose parallelInput/Output (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applicationsand was developed to enhance the NXP Semiconductors family of I2C-bus I...
上传时间： 2013-10-14
上传用户：wuchunzhong
资源简介：RC4 is a secure and very fast 8-bit stream cipher/psuedo-random number generator, with a 2^1700 interval
上传时间： 2013-12-05
上传用户：ztj182002
资源简介：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 improv...
上传时间： 2013-11-13
上传用户：fredguo
资源简介：电工学 上海交大精品课件(赵爱萍版) PPT版
上传时间： 2013-04-15
上传用户：eeworm
资源简介：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 hig...
上传时间： 2013-10-15
上传用户：stella2015
资源简介：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 hig...
上传时间： 2013-10-23
上传用户：jasonheung
资源简介：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...
上传时间： 2014-12-28
上传用户：270189020
资源简介：The PCA9548A is an octal bidirectional translating switch controlled via the I2C-bus. TheSCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any individualSCx/SDx channel or combination of channels can be selected, determ...
上传时间： 2013-10-13
上传用户：bakdesec
资源简介：The W78E58B is an 8-bit microcontroller which has an in-system programmable Flash EPROM for firmware updating. The instruction set of the W78E58B is fully compatible with the standard 8052. The W78E58B contains a 32K bytes of main ROM a...
上传时间： 2017-04-27
上传用户：yiwen213
资源简介：PCF8574 Remote 8-bit I/O expander for I2C-bus IO扩展芯片测试程序
上传时间： 2017-02-01
上传用户：wpt
资源简介：The PCA9534 is a 16-pin CMOS device that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. The improv...
上传时间： 2013-11-17
上传用户：vodssv
资源简介：The PCA9536 is an 8-pin CMOS device that provides 4 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. I/O expan...
上传时间： 2013-10-27
上传用户：w230825hy
资源简介：Computing the addition of two 8-bit numbers and display the result in an output port.-Target PIC16F877A
上传时间： 2017-04-19
上传用户：ukuk
资源简介：The Inter IC bus or I2C bus is a simple bidirectional two wire bus designed primarily for general control and data transfer communication between ICs. Some of the features of the I2C bus are: • Two signal lines, a serial data line (...
上传时间： 2013-12-11
上传用户：jeffery
资源简介：*** *** *** *** *** *** ***** ** Two wire/I2C Bus READ/WRITE Sample Routines of Microchip s ** 24Cxx / 85Cxx serial CMOS EEPROM interfacing to a ** PIC16C54 8-bit CMOS single chip microcomputer ** Revsied Version 2.0 (4/2/92). **...
上传时间： 2013-12-27
上传用户：ljmwh2000
资源简介：The PCA9535 and PCA9535C are 24-pin CMOS devices that provide 16 bits of GeneralPurpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and wasdeveloped to enhance the NXP Semiconductors family of I2C-bus I/O expanders...
上传时间： 2013-10-21
上传用户：爱死爱死
资源简介：The PCA9539; PCA9539R is a 24-pin CMOS device that provides 16 bits of GeneralPurpose parallel Input/Output (GPIO) expansion with interrupt and reset forI2C-bus/SMBus applications and was developed to enhance the NXP Semiconductorsfamily of...
上传时间： 2013-11-10
上传用户：ewtrwrtwe
资源简介：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 providi...
上传时间： 2013-10-12
上传用户：laomv123
资源简介：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 hig...
上传时间： 2013-10-29
上传用户：wkchong
资源简介：The PCA9674/74A is a drop-in upgrade for the PCF8574/74A providing higher Fast-modePlus 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 devi...
上传时间： 2013-10-22
上传用户：wwwwwen5
资源简介：Generate I2C Using 8051 IO port
上传时间： 2015-03-02
上传用户：大三三
资源简介：A collection of math routines including 8-bit, 16-bit, 32-bit signed and unsigned addition, subtraction, multiplication, and division. Very nice code library with heavy in-line documentation! Been looking for multi-byte divide? Here it is.
上传时间： 2015-05-17
上传用户：cursor
资源简介：This a demo illustrating (1) 8-bit CRC check sums, (2) 57600,N,9,1 communications, and (3) RS-422/RS-485 communications.
上传时间： 2014-01-06
上传用户：yiwen213
资源简介：These routines transmit and receive serial data using two general * I/O pins, in 8 bit, No parity, 1 stop bit format. They are useful * for performing serial I/O on 8051 derivatives not having an * internal UART, or for implementing a se...
上传时间： 2015-05-22
上传用户：firstbyte
