LPDDR5 SDRAM is a high-speed synchronous SDRAM device internally configured with 1 channel containing either 16 or 8 DQ signals. The bank architecture is user-selectable, and can be either eight banks (8B Mode), four banks with four bank groups (BG Mode), or sixteen banks (16B Mode). See 2.2.3 for more information. LPDDR5(Low Power Double Data Rate 5)协议是针对移动设备的一种高速、低功耗内存标准,由JEDEC固态技术协会制定。这个标准旨在提高数据传输速率,同时降低能耗,以满足现代智能手机、平板电脑和其他便携式设备的需求。 LPDDR5内存模块采用同步动态随机存取存储器(SDRAM)设计,内部结构包含1个通道,通道内有16或8条数据信号线(DQ)。这种设计允许更高效的数据处理,尤其是在高数据速率的应用中。协议提供三种不同的银行架构供用户选择:八银行模式(8B Mode)、四银行四银行组模式(BG Mode)以及十六银行模式(16B Mode)。每种模式都有其特定的优势,例如,更多的银行可以提高并行操作能力,从而提升内存性能。 在八银行模式下,内存被划分为八个独立的访问单元,每个银行可以独立地进行读写操作,提高了并发处理能力。四银行四银行组模式进一步扩展了并行性,通过四个银行组,每个组内有两个银行可以同时工作。而在十六银行模式下,内存的并发处理能力达到最大,适合需要极高数据吞吐量的应用。 LPDDR5相比于前一代LPDDR4/4X,在速度上有显著提升。它支持高达6400MT/s的数据传输速率,相比LPDDR4X的最高3200MT/s翻了一倍。更高的速度意味着更快的系统响应时间和更流畅的多任务处理。此外,LPDDR5引入了能量效率优化的特性,如Data Bus Inversion (DBI)技术,该技术通过反转数据总线上的信号来减少电源切换,从而降低功耗。还有Write X功能,当写入操作为零时,会跳过不必要的电源转换,进一步节省能源。 另外,LPDDR5引入了UDIMM(User Data Integrity Monitor)和CMD Error Correction Code (ECC)等错误检测和纠正机制,增强了数据的完整性和系统的稳定性。UDIMM能够实时监测数据错误,而CMD ECC则对命令和地址总线进行纠错,确保内存操作的准确性。 LPDDR5协议通过提供更高的数据速率、更低的功耗以及增强的错误纠正机制,提升了移动设备的性能和能效。随着移动设备对计算能力和续航能力要求的不断提升,LPDDR5成为了新一代移动设备内存的标准选择。
2024-08-02 17:45:39 10.51MB
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### LPDDR4(低功耗双倍数据速率4)JESD209-4E标准解析 #### 标准概述 《低功耗双倍数据速率4 (LPDDR4)》是JEDEC(固态技术协会)发布的一项重要标准,其最新版本为JESD209-4E,修订于2021年6月,并于2024年6月正式发布。这一标准主要针对低功耗内存技术进行了详细规定,旨在促进内存产品的标准化、互换性和性能提升。 #### LPDDR4技术简介 **LPDDR4**是一种专为移动设备设计的低功耗动态随机存取内存技术。它继承了前代LPDDR3的优点,并在带宽、能效等方面进行了显著改进。该技术广泛应用于智能手机、平板电脑等便携式电子设备中,以满足这些设备对高性能与低功耗的双重需求。 #### 技术特点 1. **高带宽:**LPDDR4支持高达3200MT/s的数据传输速率,相较于LPDDR3有了显著提高。 2. **低功耗:**通过多种节能机制和技术,如更低的工作电压(1.1V),LPDDR4能够在保持高性能的同时大幅度降低能耗。 3. **可扩展性:**LPDDR4支持更灵活的容量扩展方案,包括多芯片封装技术,以满足不同应用的需求。 4. **可靠性与稳定性:**采用了先进的纠错码(ECC)技术,提高了数据传输的可靠性和系统的整体稳定性。 5. **易用性:**LPDDR4简化了设计复杂度,使得设计者能够更容易地将其集成到各种系统中。 #### 技术细节 - **工作电压:**LPDDR4采用1.1V的标准工作电压,相比前代产品降低了功耗。 - **数据传输速率:**最高可达3200MT/s,有效提升了数据吞吐量。 - **地址/命令/控制信号:**这些信号的接口被优化,以提高信号完整性并减少电磁干扰。 - **电源管理:**引入了多种电源管理模式,如深度睡眠模式,进一步降低了功耗。 - **存储器组织:**LPDDR4支持更高密度的存储单元组织,有助于实现更大容量的内存模组。 - **温度范围:**支持广泛的温度范围,确保在不同环境下的稳定运行。 #### 标准制定目的 - **消除误解:**标准的制定有助于消除制造商与购买者之间的误解。 - **产品互换性:**通过标准化,促进了不同品牌内存产品之间的互换性。 - **性能改进:**标准的制定有利于推动技术进步,从而提高内存产品的整体性能。 - **便于选择:**为购买者提供了明确的选择指南,帮助他们快速找到适合的应用产品。 #### 标准适用范围 JEDEC标准适用于所有内存制造商和用户,无论是JEDEC成员还是非成员。这些标准不仅在国内得到广泛应用,在国际市场上也具有很高的认可度。 #### 结论 LPDDR4 JESD209-4E标准代表了当前低功耗内存领域的最先进技术。通过不断的技术迭代和完善,LPDDR4不仅在性能上实现了突破,还在功耗控制方面取得了显著成就,极大地推动了移动计算领域的发展。对于设计师和制造商来说,理解和掌握这一标准将有助于他们开发出更加高效、节能的产品。
2024-07-31 15:17:38 6.33MB LPDDR4
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JEDEC STANDARD Low Power Double Data Rate (LPDDR) 5/5X JESD209-5C (Revision of JESD209-5B, June 2021) June 2023
2024-03-27 09:14:55 28.86MB lpddr lpddr5
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vcs工具,nlp指导手册
2024-03-08 15:36:32 5.06MB nlp
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Preface................................................................................................ vii Part I: RF Circutis: wide band, Front-Ends, DAC’s Introduction ........................................................................................ 1 Ultrawideband Transceivers John R. Long ...................................................................................... 3 High Data Rate Transmission over Wireless Local Area Networks Katelijn Vleugels................................................................................ 15 Low Power Bluetooth Single-Chip Design Marc Borremans, Paul Goetschalckx ................................................. 25 RF DAC’s: output impedance and distortion Jurgen Deveugele, Michiel Steyaert................................................... 45 High-Speed Bandpass ADCs R. Schreier .......................................................................................... 65 High-Speed Digital to Analog Converters Konstantinos Doris, Arthur van Roermund........................................ 91 Part II: Design Methodology and Verification for RF and Mixed-Signal Systems Introduction ........................................................................................ 111 Design Methodology and Model Generation for Complex Analog Blocks Georges Gielen................................................................................... 113 Automated Macromodelling for Simulation of Signals and Noise in Mixed-Signal/RF Systems Jaijeet Roychowdhury ........................................................................ 143 A New Methodology for System Verification of RFIC Circuit Blocks Dave Morris........................................................................................ 169 Platform-Based RF-System Design Peter Baltus ........................................................................................ 195 Practical Test and BIST Solutions for High Performance Data Converters Degang Chen ...................................................................................... 215 Simulation of Functional Mixed Signal Test Damien Walsh, Aine Joyce, Dave Patrick ......................................... 243 Part III: Low Power and Low Voltage Introduction ........................................................................................ 249 The Effect of Technology Scaling on Power Dissipation in Analog Circuits Klaas Bult ........................................................................................... 251 Low-Voltage, Low-Power Basic Circuits Andrea Baschirotto, Stefano D’Amico, Piero Malcovati ................... 291 0.5 V Analog Integrated Circuits Limits on ADC Power Dissipation Ultra Low-Power Low-Voltage Analog Integrated Filter Design Wireless Inductive Transfer of Power and Data Robert Puers, Koenraad Van Schuylenbergh, Michael Catrysse, Bart Peter Kinget, Shouri Chatterjee, and Yannis Tsividis........................ 329 Boris Murmann .................................................................................. 351 Wouter A. Serdijn, Sandro A. P. Haddad, Jader A. De Lima ............ 369 Hermans ............................................................................................. 395
2023-06-24 18:58:51 32.17MB electric
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System on Chip Interfaces for Low Power Design 9780128016305.pdf
2023-01-18 00:05:44 12.25MB 嵌入式
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主要介绍了多级运放放大器的频率补偿方法,在做LDO等电路是有借鉴意义。
2022-12-13 16:56:41 17.09MB 频率补偿
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Low Power Semiconductor Devices and Processes for Emerging Applications in Communications, Computing,and Sensing 2019 Low Power Semiconductor Devices and Processes for Emerging Applications 2018.part1.rar (16.1 MB, 下载次数: 115 ) Low Power Semiconductor Devices and Processes for Emerging Applications 2018.part2.rar (16.1 MB, 下载次数: 130 ) 2019-7-23 08:45 上传 点击文件名下载附件 下载积分: 资产 -6 信元, 下载支出 6 信元 Low Power Semiconductor Devices and Processes for Emerging Applications 2018.part3.rar (16.1 MB, 下载次数: 126 ) Low Power Semiconductor Devices and Processes for Emerging Applications 2018.part4.rar (16.1 MB, 下载次数: 122 ) Low Power Semiconductor Devices and Processes for Emerging Applications 2018.part5.rar (298.5 KB, 下载次数: 64 ) Making processing information more energy-effcient would save money, reduce energy use and permit batteries that provide power to mobile devices to run longer or be smaller in size. New approaches to the lower energy requirement in computing, communication and sensing need to be investigated. This book addresses this need in multiple application areas and will serve as a guide in emerging circuit technologies. Revolutionary device concepts, sensors and associated circuits and architectures that will greatly extend the practical engineering limits of energy-effcient computation are being investigated. Disruptive new device architectures, semiconductor processes and emerging new materials aimed at achieving the highest level of computational energy effciency for general purpose computing systems need to be developed. This book will provide chapters dedicated to such efforts from process to device.
2022-09-01 08:49:03 55.09MB Low Power Semiconductor  Devices
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BMI160使用说明 原版The BMI160 is a small, low-power, low-noise 16 bit Inertial Measurement Unit designed for use in mobile applications such as augmented reality or indoor navigation which require highly accurate, real-time sensor data. In full operation mode, with both the accelerometer and gyroscope enabled, the current consumption is typically 925 μA, enabling always-on applications in battery driven devices. It is available in a compact 14-pin 2.5 × 3.0 × 0.8 mm3 LGA package.
2022-07-17 11:28:48 219KB BMI160 加速度 陀螺仪
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低功耗片上系统芯片设计手册国外经典书籍,适合自学提高。
2022-07-10 23:21:59 3.2MB 低功耗 low power SOC
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