IntroductionAs chip designers pack more functions into ICs,pin counts continue to grow and the space betweenpins keeps shrinking. Pin spacings of 0.5 mm and0.65 mm are not at all uncommon. The power ofthese new ICs is wonderful, to be sure, but trou-bleshooting them can be a chore because connect-ing scopes and logic analyzers has become muchmore difficult and less dependable.
標(biāo)簽： Agilent Probing Wedge High
上傳時(shí)間： 2013-10-22
上傳用戶：蔣清華嗯
PICkit™ 2 Microcontroller Programmer USER’S GUIDE This chapter contains general information that will be useful to know before using thePICkit™ 2 Microcontroller Programmer. Items discussed in this chapter include:• Document Layout• Conventions Used in this Guide• Warranty Registration• Recommended Reading• The Microchip Web Site• Development Systems Customer Change Notification Service• Customer Support• Document Revision History
標(biāo)簽： Microcontrolle PICkit 8482
上傳時(shí)間： 2013-11-05
上傳用戶：妄想演繹師
PICKIT™ 2 PROGRAMMER-TO-GO USER GUIDE The PICkit 2 Programmer-To-Go functionality allows a PIC MCU memory image to be downloaded into the PICkit 2 unit for later programming into a specific PIC MCU. No software or PC is required to program devices once the PICkit 2 unit is set up for Programming-To-Go. A USB power source for the PICkit 2 is all that is needed.
標(biāo)簽： PROGRAMMER-TO PICKIT 8482
上傳時(shí)間： 2013-10-29
上傳用戶：ca05991270
Nios 的用戶定義接口邏輯實(shí)例 有許多人問(wèn)我使用 Nios 的用戶定義接口邏輯怎么用，想了幾天決定設(shè)計(jì)一個(gè)實(shí)例來(lái)說(shuō)明。該例為一個(gè)使用 user to interface logic 設(shè)計(jì)的 PWM 實(shí)例，其中包括三個(gè)文件： plus32.v 是一個(gè)為 32bit nios 設(shè)計(jì)的 pwm 實(shí)例。 plus16.v 是一個(gè)為 16bit nios 設(shè)計(jì)的 pwm 實(shí)例。 test.s 是一個(gè)使用中斷調(diào)用 pwm 的匯編語(yǔ)言測(cè)試程序。以上模塊和程序均調(diào)試通過(guò)，并可穩(wěn)定工作。這里讓大家參考是使大家通過(guò)該例來(lái)真正理解 user to interface logic 設(shè)計(jì)方法，和nios 中通過(guò)匯編調(diào)用中斷的方法，所以超值喔。另外熱烈歡迎大家的指導(dǎo)。 注：在設(shè)計(jì) Nios 時(shí)，將你調(diào)用的 user to interface logic 插件重命名為 plus_0，這樣我的 test.s 可不作任何改動(dòng)，你就可用示波器通過(guò) nios 的 plus 管腳觀察到一個(gè)要求的輸出。
上傳時(shí)間： 2013-11-15
上傳用戶：cc1915
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(biāo)簽： Demonstration 3200 USB for
上傳時(shí)間： 2014-02-27
上傳用戶：zhangzhenyu
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 Microcontroller Core. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementation of the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision 1.1.This application note describes a demonstration program that has been written for the DK3200 hardware demonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to work with the device, using the HID class as a ready-made device driver for the USB connection.
標(biāo)簽： 3234A uPSD 3234 3200
上傳時(shí)間： 2014-04-03
上傳用戶：lizhizheng88
Internal Interrupts are used to respond to asynchronous requests from a certain part of themicrocontroller that needs to be serviced. Each peripheral in the TriCore as well as theBus Control Unit, the Debug Unit, the Peripheral Control Processor (PCP) and the CPUitself can generate an Interrupt Request.So what is an external Interrupt?An external Interrupt is something alike as the internal Interrupt. The difference is that anexternal Interrupt request is caused by an external event. Normally this would be a pulseon Port0 or Port1, but it can be even a signal from the input buffer of the SSC, indicatingthat a service is requested.The User’s Manual does not explain this aspect in detail so this ApNote will explain themost common form of an external Interrupt request. This ApNote will show that there is aneasy way to react on a pulse on Port0 or Port1 and to create with this impulse an InterruptService Request. Later in the second part of the document, you can find hints on how todebounce impulses to enable the use of a simple switch as the input device.Note: You will find additional information on how to setup the Interrupt System in theApNote “First steps through the TriCore Interrupt System” (AP3222xx)1. It would gobeyond the scope of this document to explain this here, but you will find selfexplanatoryexamples later on.
標(biāo)簽： Exter easy work with
上傳時(shí)間： 2013-10-27
上傳用戶：zhangyigenius
This application note shows how to write an Inter Integrated Circuit bus driver (I²C) for the Philips P90CL301micro-controller.It is not only an example of writing a driver, but it also includes a set of application interface software routines toquickly implement a complete I²C multi-master system application.For specific applications the user will have to make minimal changes in the driver program. Using the drivermeans linking modules to your application software and including a header-file into the application sourceprograms. A small example program of how to use the driver is listed.The driver supports i.a. polled or interrupt driven message handling, slave message transfers and multi-mastersystem applications. Furthermore, it is made suitable for use in conjunction with real time operating systems, likepSOS+.
標(biāo)簽： routines driver P90 301
上傳時(shí)間： 2013-11-23
上傳用戶：weixiao99
The P90CL301 is a highly integrated 16/32 bit micro-controller especially suitable for applications requiring lowvoltage and low power consumption. It is fully software compatible with the 68000. Furthermore, it provides bothstandard as well as advanced peripheral functions on-chip.One of these peripheral functions is the I2C bus. This report describes worked-out driver software (written in C) toprogram the P90CL301 I2C interface. It also contains interface software routines offering the user a quick start inwriting a complete I2C system application.
上傳時(shí)間： 2014-01-06
上傳用戶：氣溫達(dá)上千萬(wàn)的
This application note demonstrates how to write an Inter Integrated Circuit bus driver (I2C) for the XA-S3 16-bitMicrocontroller from Philips Semiconductors.Not only the driver software is given. This note also contains a set of (example) interface routines and a smalldemo application program. All together it offers the user a quick start in writing a complete I2C system applicationwith the PXAS3x.The driver routines support interrupt driven single master transfers. Furthermore, the routines are suitable foruse in conjunction with real time operating systems.
標(biāo)簽： software driver XA-S I2C
上傳時(shí)間： 2013-11-02
上傳用戶：zw380105939
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