Traditionally, portable system designers have used ASICs and ASSPs to implement memory interfaces, I/O expansion, power sequencing, discrete logic, and display functions in portable systems. Low cost, low power, and small board space requirements have limited the use of programmable logic in the portable space. However, today\'s low average selling prices, low power, and small form factor packages of programmable logic devices make them viable alternatives to ASICs, ASSPs, and discrete devices in portable applications. With the very low cost, ultra-small form factor, high density, on-chip voltage regulator, and low power consumption of MAX? II CPLDs, portable system designers can reduce power consumption and costs by an average of 50% compared to competing CPLD solutions, while also gaining time-to-market and flexibility advantages that ASICs and ASSPs cannot achieve.
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Design of multi-channel high-precision data acquisition system for microcontroller: A multi-channel high-precision data acquisition system is designed by combining CPLD and microcontroller, which can achieve up to 24-bit conversion accuracy. The collected data has good real-time performance, and a large number of channels can be collected. At the same time, the system has strong anti-external interference ability, simple structure and good reliability. The system has strong portability and can be widely used in multi-channel, high-precision, low-frequency data acquisition occasions. Keywords: data acquisition system; AD7714; CPLD; microcontroller
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Abstract: A three-phase hybrid stepper motor control system based on AVR single-chip microcomputer and CPLD is proposed. The principle and structure block diagram of the system are introduced, and the design principle and implementation of the core part of the control circuit are discussed in detail. The system uses a single-chip microcomputer to set the speed and direction of the motor. The CPLD converts the control signal sent by the single-chip microcomputer into the actual control signal of the motor, and realizes the precise control of the speed and direction of the stepper motor through the driving amplifier circuit. A current-controlled PWM signal generation circuit is designed in the system. Experimental results show that the system has the advantages of easy modification, flexible use, high reliability, strong portability, and strong anti-interference ability. Keywords: stepper motor; pulse width modulation; AVR single-chip microcomputer; drive circuit
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OpenCores is a loose collection of people who are interested in developing hardware, with a similar ethos to the free software movement. Currently the emphasis is on digital modules called \'cores\', since FPGAs have reduced the incremental cost of a core to approximately zero. Activity is centered around the opencores web site
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Altera\'s Quartus II design software provides a complete multi-platform design environment that can directly meet specific design needs and provide a comprehensive design environment for programmable chip systems (SOPC). Quartus II software contains solutions for all stages of FPGA and CPLD design, as shown in the first figure on the next page. Quartus II design tools support designs based on VHDL, Verilog HDL and graphics, and have VHDL and Verilog HDL logic synthesizers embedded in them. Quartus II can use third-party synthesis tools such as Synplify for logic synthesis, and can also use third-party simulation tools such as Modelsim for simulation. In addition, Quartus II can be combined with MATLAB and DSP Builder to develop FPGA-based DSP systems. Using the SOPC Builder embedded in Quartus II and the Nios IIIDE integrated development environment, Nios II embedded soft-core processors can be developed.
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The purpose of this tutorial is to help you practice and get familiar with the relevant knowledge of software and hardware, rather than to explain the Verilog HDL language. Therefore, before learning this tutorial, you should first learn the basic syntax knowledge and programming ideas of Verilog HDL. I have also written an article about Verilog HDL learning suggestions, you can take a look at: http://www.5ifpga.com/viewthread.php?tid=106. The main reference books mentioned in it are:
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In the following gate circuits, which output terminals can be directly interconnected? If the output terminals cannot be interconnected, why? a) Ordinary TTL gate circuit; b) Ordinary CMOS gate circuit; c) OC gate; d) Tri-state output gate; e) OD gate.
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Embedded Linux is an operating system based on Linux. Only after you have a relatively proficient use of the Linux system can you be proficient in the field of embedded Linux development. Through the study of this chapter, readers can master the following content. Be able to independently install the Linux operating system Be able to skillfully use the basic commands of the Linux system Understand the Linux system startup process Be able to independently install software in the Linux system Be able to independently set Linux environment variables Be able to independently customize Linux services
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Abstract: With the microcontroller LPC1768 as the core to control the sampling circuit of AD7656, a design scheme with accurate time stamp for power system monitoring data is realized. The system uses the LPC1768 on-chip resource SSP0 to control AD7656 for sampling, and uses the on-chip resource RTC to obtain sampled data with real-time time stamp. The sampling system with time stamp has a good application prospect in industrial real-time monitoring system. Introduction In the monitoring system, the monitoring of the measured object often needs to be time stamped. In the past, the real-time clock chip PCF8563 was often expanded externally, and the controller was connected using the I2C interface to obtain the time. This design requires external hardware resources and consumes controller resources, and the use effect is not good. NXP\'s LPC1768 based on the latest ARMv7 core has an embedded real-time clock counter. The system can continue to run when the power is off. It can be powered by the built-in power pin VBAT for uninterrupted timing. The digital-to-analog sampling module uses ADI\'s AD7656. Its high precision, high speed, high signal-to-noise ratio, and good practicality make it an excellent choice for analog-to-digital conversion.
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LPC1769 usage notes - records the system clock configuration, internal clock output CLKOUT, header file path issues, GPIO0 and GPIO2 as external interrupts, initialization and interrupt service routines of LPC1769 on the LPCXpresso platform
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This document introduces the performance, pins, circuits, and design of LPC768 in detail. It is an essential document... LPC1768 serial communication sampling system realizes the design of adding time stamp to the sampling data, which is very useful for the monitoring system to obtain
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The LPC2478 microcontroller from Semiconductor Design, powered by the ARM7TDMI-S core, is a highly integrated microcontroller for a wide range of applications requiring advanced communications and high-quality graphics display.
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LPC series ARM chip - LPC1000 series ARM is a microcontroller based on the second generation Cortex-M3 core, used to handle embedded applications that require high integration and low power consumption. It adopts a 3-stage pipeline and Harvard structure
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PC2103 drives 1602 LCD screen If you have learned GPIO, GPIO, then driving 1602 LCD will not be a problem. LCD will not be a problem. About the register control of 1602 LCD,
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LPCXpresso IDE is developed by Code Red Technologies based on the popular Eclipse development platform and supports LPC series devices. It is an industry-standard GNU tool chain, and its optimized C library functions provide engineers with all the development tools they need, enabling them to obtain fast, inexpensive, high-quality software solutions. The C programming environment has professional features: statement/keyword color settings, source program format settings, expand/contract functions, offline/online help, automatic project management
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General description The LPC2114/LPC2124 are based on a 16/32 bit ARM7TDMI-S? CPU with real-time emulation and embedded trace support, together with 128..
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Application of an improved LPC algorithm in extracting whispered speech formants EM-LPC1768 development board schematic diagram - EM-LPC1768 is a full-featured evaluation board newly launched by Embest based on NXP Semiconductors\' LPC1700 series processor (Cortex-M3 core V2 version).
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The LPC2364/65/66/67/68 microcontrollers are based on a 16-bit/32-bit ARM7TDMI-SCPU with real-time emulation that combines the microcontroller with up to 512kB ofembedded high-speed ?ash memory. A 128-bit wide memory interface and a uniqueaccelerator architecture enable 32-bit code execution at the maximum clock rate. Forcritical performance in interrupt service routines and DSP algorithms, this increasesperformance up to 30% over Thumb mode. For critical code size applications, thealternative 16-bit Thumb mode reduces code by more than 30% with minimalperformance penalty.
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General Purpose DMA controller (GPDMA) on AHB that can be used with the SSPserial interfaces, the I2S port,and the Secure Digital/MultiMediaCard (SD/MMC) cardport, as well as for memory-to-memory transfers.
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[BS British Standards] BSEN50164-5-2009 Lightning Protection Components (LPC)u2014 Part 5 Requirements for earth the electrolyte inspection
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