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/O expanders.I/O expanders provide a simple solution when additional I/O is needed for ACPI powerswitches, sensors, push-buttons, LEDs, fans, etc.
上傳時間: 2014-01-24
上傳用戶:youmo81
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 I2C-bus I/O expanders. I/O expanders provide a simple solution when additionalI/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.
上傳時間: 2013-11-10
上傳用戶:ewtrwrtwe
PCA9544A 是nxp 公司生產的I2C 總線多路復用器,通過該器件可以將一路I2C 總線擴展為4 路I2C 總線。將1 路上行SDA/SCL 通道擴展為4 路下行通道。通過對內部可編程寄存器進行配置,在同一時間可以任意選擇一對SCx/SDx 線。器件擁有四路輸入中斷,INT0到INT3,分別對應著四路下行通道。該器件還有一個輸出中斷,輸出中斷的狀態由四個輸入中斷通過“與”邏輯控制。
上傳時間: 2013-11-17
上傳用戶:woshinimiaoye
PCA9544 是nxp 公司生產的I2C 總線擴展器件,通過它可以將1 路I2C 總線擴展為4路。在對內部控制寄存器進行相應配置后,可選擇4 路下行I2C 總線中的任1 路與上行I2C總線連接。具有4 個中斷輸入和1 個中斷輸出引腳,增加了I2C 器件實時處理能力。經過對器件工作電壓的選擇,可使1.8V、2.5V、3.3V 與5V 的總線電壓之間相互通信。每個I2C 接口和中斷輸入輸出口均為開漏,所有I/O 口都可承受5V 的輸入電壓。工業級的溫度范圍,小封裝:SO20、TSSOP20、HVQFN20。
上傳時間: 2013-11-18
上傳用戶:zl5712176
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, lower supply current, individual I/Oconfiguration, and smaller packaging. I/O expanders provide a simple solution whenadditional 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, Outputand Polarity Inversion (active HIGH or active LOW operation) registers. The systemmaster can enable the I/Os as either inputs or outputs by writing to the I/O configurationbits. The data for each Input or Output is kept in the corresponding Input or Outputregister. The polarity of the read register can be inverted with the Polarity Inversionregister. All registers can be read by the system master. Although pin-to-pin and I2C-busaddress compatible with the PCF8575, software changes are required due to theenhancements, and are discussed in Application Note AN469.
上傳時間: 2013-11-13
上傳用戶:fredguo
PCA9548 是nxp 公司生產的I2C 總線擴展器件,通過它可以將1 路I2C 總線擴展為8路。在對內部控制寄存器進行相應配置后,可同時選擇1 路或多路下行I2C 總線與上行I2C總線連接。通過外部的硬件復位可使器件恢復到默認狀態——斷開上下行總線之間的連接,提高系統的可靠性。經過對器件工作電壓的選擇,可使1.8V、2.5V、3.3V 與5V 總線之間相互通信。每個I2C 接口和中斷輸入輸出口均為開漏,所有I/O 口都可承受5V 的輸入電壓。工業級的溫度范圍,小封裝:SO24、TSSOP24、HVQFN24。
上傳時間: 2013-11-14
上傳用戶:wawjj
PCF2123是nxp公司推出的一款低功耗的CMOS實時時鐘/日歷芯片。該芯片具有SPI接口,數據通過SPI總線傳輸,總線速率高達6.25Mbit/s。PCF2123具有報警功能、定時器功能、時鐘輸出功能、中斷輸出功能以及時鐘校準功能。PCF2123是一款性價比極高的時鐘芯片,可用于電表、水表、電話、傳真機、便攜式儀器以及電池供電的儀器儀表等產品領域
上傳時間: 2013-11-23
上傳用戶:windypsm
The outputs of the PCA9518 are immediately available as soon as there is a voltage present on thesupply >~1V and behave as described above. The power-on reset of the PCA9518A keeps the outputsturned off during power-up and maintains the high impedance of the outputs throughout the power-upcycle. There is an additional built-in delay after power-up that allows the analog circuits to stabilize beforethe part is activated.
標簽: Replacement 9518 nxp PCA
上傳時間: 2013-10-26
上傳用戶:13817753084
I2C BUS(Inter IC BUS)是nxp 推出的芯片間串行傳輸總線,它以2 根連線實現了完善的雙向同步數據傳送,可以極方便地構成多機系統和外圍器件擴展系統。I2C 總線采用了器件地址的硬件設置方法,通過軟件尋址完全避免了器件的片選線尋址方法,從而使硬件系統具有最簡單而靈活的擴展方法。I2C 總線的2 根線(串行數據——SDA,串行時鐘——SCL)連接到總線上的任何一個器件,每個器件都應有一個唯一的地址,而且都可以作為一個發送器或接收器。此外,器件在執行數據傳輸時也可以被看作是主機或從機。
上傳時間: 2013-11-05
上傳用戶:qb1993225
PK51是為8051系列單片機所設計的開發工具,支持所有8051系列衍生產品,,支持帶擴展存儲器和擴展指令集(例如Dallas390/5240/400,Philips 51MX,Analog Devices MicroConverters)的新設備,以及支持很多公司的一流的設備和IP內核,比如Analog Devices, Atmel, Cypress Semiconductor, Dallas Semiconductor, Goal, Hynix, Infineon, Intel, nxp(founded by Philips), OKI, Silicon Labs,SMSC, STMicroeleectronics,Synopsis, TDK, Temic, Texas Instruments,Winbond等。通過PK51專業級開發工具,可以輕松地了解8051的On-chip peripherals與及其它關鍵特性。
上傳時間: 2013-10-09
上傳用戶:1109003457