The PCA9555 is a 24-pin CMOS device that provides 16 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 improvements
include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O
configuration, and smaller packaging. I/O expanders provide a simple solution when
additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.
The PCA9555 consists of two 8-bit Configuration (Input or Output selection); Input, Output
and Polarity Inversion (active HIGH or active LOW operation) registers. The system
master can enable the I/Os as either inputs or outputs by writing to the I/O configuration
bits. The data for each Input or Output is kept in the corresponding Input or Output
register. The polarity of the read register can be inverted with the Polarity Inversion
register. All registers can be read by the system master. Although pin-to-pin and I2C-bus
address compatible with the PCF8575, software changes are required due to the
enhancements, and are discussed in Application Note AN469.
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 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 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 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：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 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：I2C bus HDL source and testbench
上传时间： 2013-12-17
上传用户：watch100
资源简介：I2C-bus specification and user manual Rev.03-19 June 2007.pdf
上传时间： 2014-08-19
上传用户：playboys0
资源简介：This file contains routines to write to and read from the I2C bus using the GPIO pins of the CS5530.
上传时间： 2014-01-21
上传用户：zaizaibang
资源简介：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 (...
上传时间： 2013-10-09
上传用户：3294322651
资源简介：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 con...
上传时间： 2013-12-07
上传用户：europa_lin
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 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 PCA9674/74A provide general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plus (Fm+) family.
上传时间： 2013-10-28
上传用户：linyao
资源简介：PCA9673是PCF8575的升级产品，提供快速模式FM+的I2C-bus速度（1MHz），因此，输出能支持PWM LED调光功能。具有高I2C总线驱动能力（30mA），所以不需要总线缓冲器就能挂接很多器件。且灌电流能力高（200mA），能同21时驱动多个25mA的LED，允许多个器件（16个）...
上传时间： 2013-11-14
上传用户：evil
资源简介：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 con...
上传时间： 2014-12-28
上传用户：nshark
资源简介：The PCA9546A is a quad bidirectional translating switch controlled via the I2C-bus. TheSCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individualSCx/SDx channel or combination of channels can be selected, determine...
上传时间： 2013-11-16
上传用户：cc1915
资源简介：The 87LPC76X Microcontroller combines in a small package thebenefits of a high-performance microcontroller with on-boardhardware supporting the Inter-Integrated Circuit (I2C) bus interface.The 87LPC76X can be programmed both as an I2C bus m...
上传时间： 2013-11-19
上传用户：shirleyYim
资源简介：I2C algorithm for the PXA I2C bus acce
上传时间： 2013-12-31
上传用户：yiwen213
资源简介：i2c-dev.c - i2C-bus driver, char device interface
上传时间： 2015-05-21
上传用户：sammi
资源简介：lcm display,it use i2c 8576,and it can be used motor etc
上传时间： 2014-11-23
上传用户：h886166
资源简介：use of NIOS PIO to simulate I2C bus,to initial TVP5150
上传时间： 2015-11-15
上传用户：wlcaption
资源简介：The I2C-bus specification 由于大规模集成电路技术的发展，在单个芯片集成CPU以及组成一个单独工作系统所必须的ROM、RAM、I/O端口、A/D、D/A等外围电路和已经实现，这就是常说的单片机或微控制器。目前，世界上许多公司生产单片机，品种很多：包括各种字长...
上传时间： 2013-12-28
上传用户：windwolf2000
资源简介：USB code using I2C bus to communicate with other node
上传时间： 2014-02-13
上传用户：yyyyyyyyyy
资源简介：Demo for I2C Master and Slave
上传时间： 2014-01-17
上传用户：cooran
资源简介：This document teach how you interface the microcontroller to the devices using i2c , spi and serial rs-232 and others.
上传时间： 2014-12-03
上传用户：dengzb84
