該應用報告描述了旋轉檢測器的實現，該旋轉檢測器使用一對可檢測磁場的巨磁阻GMR（Giant Magneto-Resistive,）傳感器。傳感器的分布使它們不使用正交信號序列，這提供了討論非正交情況如何配置SIF的機會。討論了調試SIF應用程序的技術，提供了一個設計非正交進程狀態機（processing state machines）的工具。
上傳時間： 2013-10-21
上傳用戶：sammi
為提高太陽能的利用率，以ATmega8單片機為控制核心，設計了一套光電跟蹤與視日運動軌跡跟蹤互補控制的雙軸太陽跟蹤器。該跟蹤器在晴天時，利用光敏電阻采集光強判斷太陽位置,控制步進電機實現光電跟蹤；在陰天時，采集時鐘器件PCF8583的時間信息,計算當前太陽位置來實現視日運動軌跡跟蹤。實驗表明：該太陽跟蹤器能在不同天氣狀況下對太陽進行較準確地跟蹤，能量接收效率提高了30%，達到充分利用太陽能的目的。 Abstract: To improve the utilization rate of solar energy，a kind of solar tracking controller which effectively combined the sun angle tracking and photo electric tracking based on ATmega8is designed.In the sunny days，the solar tracking con-troller determines the sun's position by using photosensitive resistances to collect light intensity and control stepper motors to achieve photo electric tracking，n cloudy days，it collects clock chip PCF8583time information to calculate the current position of the sun and achieve the sun angle tracking.Experimental results show the solar tracking controller accurately tracks the sun in different weather conditions，improves received energy efficiency by30%and reaches the purpose of full use of solar energy.
上傳時間： 2013-10-15
上傳用戶：urgdil
The CAT93C46 is a 1 kb Serial EEPROM memory device which isconfigured as either 64 registers of 16 bits (ORG pin at VCC) or 128registers of 8 bits (ORG pin at GND). Each register can be written (orread) serially by using the DI (or DO) pin. The CAT93C46 features aself−timed internal write with auto−clear. On−chip Power−On Resetcircuit protects the internal logic against powering up in the wrongstate.
上傳時間： 2013-11-20
上傳用戶：ynzfm
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.
上傳時間： 2013-10-13
上傳用戶：ytulpx
The MSP-FET430PIF is a Parallel Port interface (does not include target board) that is used to program and debug MSP430 FET tools and test boards through the JTAG interface. This interface is included in our FET tools, but sold without the development board. This interface uses a Parallel PC Port to communicate to the Debugger Software (IAR Kickstart software included) running on the PC. The interface uses the standard 14 pin header to communicate to the MSP430 device using the standard JTAG protocol. The flash memory can be erased and programmed in seconds with only a few keystrokes, and since the MSP430 flash is extremely low power, no external power supply is required. The tool has an integrated software environment and connects directly to the PC which greatly simplifies the set-up and use of the tool. The flash development tool supports development with all MSP430 flash parts. Features MSP430 debugging interface to connect a MSP430-Flash-device to a Parallel port on a PC Supports JTAG debug protocol (NO support for Spy-Bi-Wire (2-wire JTAG) debug protocol, Spy-Bi-Wire (2-wire JTAG) is supported by MSP-FET430UIF) Parallel Port cable and a 14-conductor target cable Full documentation on CD ROM Integrated IAR Kickstart user interface which includes: Assembler Linker Limulator Source-level debugger Limited C-compiler Technical specifications: Backwardly compatable with existing FET tool boards.
上傳時間： 2013-10-26
上傳用戶：fengweihao158@163.com
Keil C251設計軟件V3.11(4k代碼限制） keil c251 v3.11 demo版的安裝說明：安裝方法是先將V3.11安裝程序用winzip解壓縮到某個目錄下。（不要直接點擊setup.exe安裝），比如解壓縮到c:\c251然后執行c:\c251\setup\setup.exe 安裝程序，這個程序會讓你選擇安裝Eval Version版還是Full Version版，選擇Eval Version版進行安裝 安裝好之后就可以使用，但有代碼大小的限制。需要無限制的版本，請購買正版軟件。 C251是intel公司的16位單片機，指令兼容51的單片機。8位單片機風靡了20年，下一個20年應該是16位單片機的世界。
上傳時間： 2014-01-23
上傳用戶：yanqie
NXP Semiconductor designed the LPC2400 microcontrollers around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded Trace. The LPC2400 microcontrollers have 512 kB of on-chip high-speedFlash memory. This Flash memory includes a special 128-bit wide memory interface andaccelerator architecture that enables the CPU to execute sequential instructions fromFlash memory at the maximum 72 MHz system clock rate. This feature is available onlyon the LPC2000 ARM Microcontroller family of products. The LPC2400 can execute both32-bit ARM and 16-bit Thumb instructions. Support for the two Instruction Sets meansEngineers can choose to optimize their application for either performance or code size atthe sub-routine level. When the core executes instructions in Thumb state it can reducecode size by more than 30 % with only a small loss in performance while executinginstructions in ARM state maximizes core performance.
上傳時間： 2013-11-15
上傳用戶：zouxinwang
The LPC1700 Ethernet block contains a full featured 10 Mbps or 100 Mbps Ethernet MAC (Media Access Controller) designed to provide optimized performance through the use of DMA hardware acceleration. Features include a generous suite of control registers, half or full duplex operation, flow control, control frames, hardware acceleration for transmit retry, receive packet filtering and wake-up on LAN activity. Automatic frame transmission and reception with Scatter-Gather DMA off-loads many operations from the CPU.
上傳時間： 2013-11-09
上傳用戶：geshaowei
The CAT25128 is a 128−Kb Serial CMOS EEPROM device internally organized as 16Kx8 bits. This features a 64−byte page write buffer and supports the Serial Peripheral Interface (SPI) protocol. The device is enabled through a Chip Select (CS) input. In addition, the required bus signals are clock input (SCK), data input (SI) and data output (SO) lines. The HOLD input may be used to pause any serial communication with the CAT25128 device. The device featuressoftware and hardware write protection, including partial as well as full array protection.
上傳時間： 2013-11-15
上傳用戶：fklinran
以典型的9S08 系列為例，當你選擇了一個MCU 型號后，在圖1-4 右側會顯示出所有針對該型號芯片可用的項目調試場景。其中：Full Chip Simulator”是芯片全功能模擬仿真，即無需任何目標系統的硬件資源，直接在你的PC 機上模擬運行單片機的程序，在模擬運行過程中可以觀察調試程序的各項控制和運行流程，分析代碼運行的時間，觀察各種變量，等等。CW 提供了功能強大的模擬激勵功能，可以在模擬運行時模擬一些外部事件的輸入，配合程序調試；P&E Multilink/Cyclone Pro”是基于P&E 公司的硬件調試工具實現實時在線硬件調試。實際就是我們經常說的BDM 調試。BDM 調試是基于芯片本身內含的在線調試功能，可實現程序下載，單步／全速運行，可以設若干個斷點，可以觀察和修改任意寄存器或RAM 內存空間。BDM 幾乎是開發飛思卡爾8 位（9S08 和RS08 系列）、16 位（9S12 系列）和32 位（Coldfire V1 系列）單片機的標準調試模式，運用最為廣泛；SofTec HCS08”是另外一家SofTec 公司提供的硬件調試工具，國內使用較少；HCS08 Serial Monitor”是基于芯片串口的監控調試開發模式。由于開發效率較低，現在幾乎無人使用。
上傳時間： 2013-10-10
上傳用戶：alex wang
