介紹了一種基于MSP430系列單片機(jī)和ADXL203加速度傳感器的數(shù)字式傾角儀，它不僅可以實(shí)現(xiàn)水平度檢測(cè)，而且可以測(cè)量00～3600范圍內(nèi)的任意傾角，分辨率可達(dá)O．1。。此外，由于該傾角儀輸出為數(shù)字結(jié)果，因此它也可以與其他的數(shù)字設(shè)備結(jié)合起來(lái)，組合成一個(gè)功能更加強(qiáng)大的儀器。該數(shù)字傾角儀可廣泛應(yīng)用于建筑、機(jī)械、道路、橋梁、石油、煤礦和地質(zhì)勘探等各種需要測(cè)量重力參考系下傾角的場(chǎng)合。關(guān)鍵詞：MSP430F133單片機(jī)；力敏傳感器；ADXL203加速度計(jì)；角度測(cè)量
Abstract：This paper presents a new style digital inclinometer which is developed on the basis of the MSP430F133 MCU and the ADXL203 dual axis aeeelerometer．This inclinometer not only can test levelness，but also can measure any angle between 0。and 360。with an accuracy of 0．1 O．In addition，its output is a digital result，which makes it possible to integrate itself with other digital DEVICES to form a more functional unit．This inclinometer can be widely used in any construction site，oil field，coal-mine or geologic survey and SO on where it will provide the working people with convenience to measure any angles．Key words：MSP430F133 MCU；force sensor；ADXL203 accelerometer；angle measurement
The SN65LBC170 and SN75LBC170 aremonolithic integrated circuits designed forbidirectional data communication on multipointbus-transmission lines. Potential applicationsinclude serial or parallel data transmission, cabledperipheral buses with twin axial, ribbon, ortwisted-pair cabling. These DEVICES are suitablefor FAST-20 SCSI and can transmit or receivedata pulses as short as 25 ns, with skew lessthan 3 ns.These DEVICES combine three 3-state differentialline drivers and three differential input linereceivers, all of which operate from a single 5-Vpower supply.The driver differential outputs and the receiverdifferential inputs are connected internally to formthree differential input/output (I/O) bus ports thatare designed to offer minimum loading to the buswhenever the driver is disabled or VCC = 0. Theseports feature a wide common-mode voltage rangemaking the device suitable for party-lineapplications over long cable runs.
The bootloader is stored in the internal boot ROM memory (system memory) of STM32DEVICES. It is programmed by ST during production. Its main task is to download theapplication program to the internal Flash memory through one of the available serialperipherals (USART, CAN, USB, etc.). A communication protocol is defined for each serialinterface, with a compatible command set and sequences
The MSP-FET430U14 is a powerful flash emulation tool to quickly begin application development on the MSP430 MCU. It includes USB debugging interface used to program and debug the MSP430 in-system through the JTAG interface or the pin saving Spy Bi-Wire (2-wire JTAG) protocol. The flash memory can be erased and programmed in seconds with only a few keystrokes, and since the MSP430 flash is ultra-low power, no external power supply is required.
The debugging tool interfaces the MSP430 to the included integrated software environment and includes code to start your design immediately. The MSP-FET430UIF development tools supports development with all MSP430 flash DEVICES
What is New in C51 Version 8.18[Device Support]Added debug support for the NXP P89LPC9408 in the LPC900 EPM Emulator/Programmer.[New Supported Device]Nuvoton W681308 device.[New Supported Device]NXP P89LPC9201, P89LPC9211, P89LPC922A1, P89LPC9241, P89LPC9251, P89LPC9301, P89LPC931A1, P89LPC9331, P89LPC9341, and P89LPC9351 DEVICES.[New Supported Device]SiLabs C8051F500, C8051F501, C8051F504, C8051F505, C8051F506, C8051F507, C8051F508, C8051F509, C8051F510, and C8051F511 DEVICES.[ULINK2 Support]Corrected potential deadlock on ST uPSD targets.[Device Simulation]Corrected simulation of Infineon XC800 MDU.[Device Simulation]Corrected behaviour of EXFn and TOGn on SiLabs C8051F12x/F13x DEVICES.[Device Simulation]Added simulation for Atmel AT89C51RE2, including simulation of second UART.[Cx51 Compiler]Corrected failed initialization on far addresses when the object is located with _at_.
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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.
PROTEUS VSM在單片機(jī)系統(tǒng)仿真中的應(yīng)用:：介紹了單片機(jī)系統(tǒng)仿真工具PROTEUS VSM 及其在單片機(jī)系統(tǒng)仿真中的應(yīng)用，給出了具體的應(yīng)用實(shí)例，詳細(xì)地介紹了PROTEUS VSM 與Keil uVision3的接口方法。關(guān)鍵詞：?jiǎn)纹瑱C(jī)；Keil uVision3；仿真；外圍器件；PROTEUS VSM；
Abstract：This paper introduces the simulation tool for M CU system —PROTEUS VSM ， and presents the application ofPROTEUS VSM in MCU system simulation through an applicable example．The way of interfacing PROTEUS VSM to Keil uVision3is also presented in details．Keywords：MCU ；Keil uVision3；simulation；peripheral DEVICES；PROTEUS VSM ；
CAT5110/18/19/23/24/25 linear-taper digitally programmable potentiometers perform the same function as a mechanical potentiometer or a variable resistor. These DEVICES consist of a fixed resistor and a wiper contact with 32-tap points that are digitally controlled through a2-wire up/down serial interface.
Using the XGATE for Manchester DecodingTable of Contents
1 Introduction 1.1 XGATE Module in S12X 2 Decoding Algorithm 3 Software Implementation 3.1 Frame Scheme 3.2 Operating Modes and Demo 3.3 Files Summary 3.4 Complete Mode Flowchart 4 Manchester Encoder 4.1 DEVICES Used 5 Conclusion Appendix A Noise Elements During RF Transmissions in the Manchester Decoding ImplementationA.1 Types of Noise A.2 Effects of Noise A.3 Workaround for Noise Effects
The PCA9516 is a BiCMOS integrated circuit intended forapplication in I2C and SMBus systems.While retaining all the operating modes and features of the I2Csystem, it permits extension of the I2C-bus by buffering both the data(SDA) and the clock (SCL) lines, thus enabling five buses of 400 pF.The I2C-bus capacitance limit of 400 pF restricts the number ofDEVICES and bus length. Using the PCA9516 enables the systemdesigner to divide the bus into five segments off of a hub where anysegment to segment transition sees only one repeater delay.
