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 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 (64 versus 8) are available to allow many more devices on the buswithout address conflicts.
上傳時間： 2013-10-22
上傳用戶：wwwwwen5
關鍵詞 TJA1042、高速、低功耗、CAN 收發器摘 要TJA1042 是一款高速CAN 收發器，是CAN 控制器和物理總線之間的接口，為CAN 控制器提供差動發送和接收功能
上傳時間： 2013-11-18
上傳用戶：18752787361
TJA1051 是一款高速CAN 收發器，是CAN 控制器和物理總線之間的接口，為CAN 控制器提供差動發送和接收功能
上傳時間： 2013-11-05
上傳用戶：xinhaoshan2016
Luminary Micro公司 Stellaris所提供一系列的微模塊是首款基于ARM® Cortex™-M3的模塊.Stellaris LM3S2000系列是針對CAN應用方案而設計的一組芯片，它在群星系列芯片的基礎上擴展了Bocsh CAN網絡技術——短距離工業網絡里的黃金標準。Stellaris LM3S2000系列芯片還標志著先進的Cortex-M3內核和CAN能力的首次結合運用。
上傳時間： 2013-10-08
上傳用戶：zengduo
關鍵詞 CAN報文對象的FIFO模式應用摘 要 CAN通信實驗
上傳時間： 2013-11-03
上傳用戶：kernor
關鍵詞 LM3S2016、CTM系列隔離CAN收發器摘 要 基于32位Luminary ARM的CAN節點設計
上傳時間： 2013-10-13
上傳用戶：guanliya
關鍵詞 RS-485、LM3S2016、CAN總線摘要 CAN總線現場總線應用方案 RS-485升級到CAN
上傳時間： 2013-10-21
上傳用戶：llandlu
基于CAN的OSEK COM規范研究與實現:：OSEK／VDX是汽車電子行業的重要標準，其中的通信規范OSEKCOM是ECU之間和ECU內部傳遞信息的統一平臺。OSEK COM可以基于CAN總線實現，但具體接口和行為在現有規范中沒有定義。簡要介紹了OSEK COM規范和CAN 總線技術，提出了一個基于CAN的TH．OSEK COM通信模型和實現方案，并對該方案的應用情況做了分析和展望。關鍵詞：TH．OSEKCOM；控制器局域網總線； 汽車電子
上傳時間： 2013-10-17
上傳用戶：懶龍1988
在確定采用CAN總線作為系統的通訊標準后，如何選擇合適的處理器芯片就將成為很重要的問題，是采用內部帶有CAN控制器的單片機，還是采用SJA1000等片外CAN控制器，采用的芯片是否能滿足系弘的實時性要求。
上傳時間： 2013-10-26
上傳用戶：xiaohanhaowei
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 MicrocontrollerCore. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementationof the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision1.1.This application note describes a demonstration program that has been written for the DK3200 hardwaredemonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to workwith the device, using the HID class as a ready-made device driver for the USB connection.IN-APPLICATION-PROGRAMMING (IAP) AND IN-SYSTEM-PROGRAMMING (ISP)Since the μPSD contains two independent Flash memory arrays, the Micro Controller Unit (MCU) can executecode from one memory while erasing and programming the other. Product firmware updates in thefield can be reliably performed over any communication channel (such as CAN, Ethernet, UART, J1850)using this unique architecture. For In-Application-Programming (IAP), all code is updated through theMCU. The main advantage for the user is that the firmware can be updated remotely. The target applicationruns and takes care on its own program code and data memory.IAP is not the only method to program the firmware in μPSD devices. They can also be programmed usingIn-System-Programming (ISP). A IEEE1149.1-compliant JTAG interface is included on the μPSD. Withthis, the entire device can be rapidly programmed while soldered to the circuit board (Main Flash memory,Secondary Boot Flash memory, the PLD, and all configuration areas). This requires no MCU participation.The MCU is completely bypassed. So, the μPSD can be programmed or reprogrammed any time, anywhere, even when completely uncommitted.Both methods take place with the device in its normal hardware environment, soldered to a printed circuitboard. The IAP method cannot be used without previous use of ISP, because IAP utilizes a small amountof resident code to receive the service commands, and to perform the desired operations.
標簽： Demonstration 3200 USB for
上傳時間： 2014-02-27
上傳用戶：zhangzhenyu
