高通qualcommon蓝牙芯片QCC3056详细规格书共有112页，开发人员必备手册 支持蓝牙标准5.2 ->Quad-core processor Architecture ->High-performance programmable Bluetooth mono audio Soc ->Low power modes to extend battery life. ->For Qualcomm TrueWirless stereo earbuds application.主要特点如下。
上传时间： 2022-01-24
上传用户：zhanglei193
The PW4556 series of devices are highly integrated Li-Ion and Li-Pol linear chargers targetedat small capacity battery for portable applications. It is a complete constant-current/ constantvoltage linear charger. No external sense resistor is needed, and no blocking diode is required dueto the internal MOSFET Architecture. It can deliver up to 300mA of charge current (using a goodthermal PCB layout) with a final float voltage accuracy of ±1%. The charge voltage is fixed at 4.2V or4.35V, and the charge current can be programmed externally with a single resistor. The chargerfunction has high accuracy current and voltage regulation loops and charge termination
标签： pw4556
上传时间： 2022-02-11
上传用户：1208020161
The PW4055 is a complete constant-current /constant-voltage linear charger for single cell lithiumion batteries.Its ThinSOT package and low external component count make the PW4055 ideallysuited for portable applications.Furthermore, the PW4055 is specifically designed to work within USBpower specifications.The PW4055 No external sense resistor is needed, and no blocking diode is required due to theinternal MOSFET Architecture.Thermal feedback regulates the charge current to limit the dietemperature during high power operation or high ambient temperature. The charge voltage is fixedat 4.2V, and the charge current can be programmed externally with a single resistor. The PW4055automatically terminates the charge cycle when the charge current drops to 1/10th the programmedvalue after the final float voltage is reached. When the input supply (wall adapter or USB supply) isremoved, the PW4055 automatically enters a low current state, dropping the battery drain currentto less than 2µA. The PW4055 can be put into shutdown mode, reducing the supply current to 25µA.The BAT pin has a 7KV ESD(HBM) capability. Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presenceof an input voltage
标签： pw4055
上传时间： 2022-02-11
上传用户：jason_vip1
PW2330 develops a high efficiency synchronous step down DC-DC converter capable of delivering3A output current. PW2330 operates over a wide input voltage range from 4.5V to 30V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss. PW2330 adopts the proprietary instant PWM Architecture to achieve fast transient responsesfor high step down applications and high efficiency at light loads. In addition, it operates atpseudo-constant frequency of 500kHz under continuous conduction mode to minimize the size ofinductor and capacitor
标签： pw2330
上传时间： 2022-02-11
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PW2205 develops a high efficiency synchronous step-down DC-DC converter capable of delivering5A output current. PW2205 operates over a wide input voltage range from 4.5V to 30V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss.PW2205 adopts the instant PWM Architecture to achieve fast transient responses for high step downapplications and high efficiency at light loads. In addition, it operates at pseudo-constant frequencyof 500kHz under continuous conduction mode to minimize the size of inductor and capacitor
标签： pw2205
上传时间： 2022-02-11
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The PW2163 is a high efficiency 500 kHz synchronous step-down DC-DC converter capable ofdelivering 3A current. The PW2163 operates over a wide input voltage range from 4.5V to 18V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss. Low output voltage ripple and small external inductor and capacitor sizes are achieved with 500kHz switching frequency. It adopts the instant PWM Architecture to achieve fast transient responsesfor high step down applications
标签： pw2163
上传时间： 2022-02-11
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The PW2053 is a high-efficiency monolithic synchronous buck regulator using a constantfrequency, current mode Architecture. The device is available in an adjustable version. Supply currentwith no load is 40uA and drops to <1uA in shutdown. The 2.5V to 5.5V input voltage range makesthe PW2053 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provideslow dropout operation, extending battery life in portable systems. PWM/PFM mode operationprovides very low output ripple voltage for noise sensitive applications. Switching frequency isinternally set at 1.2MHz, allowing the use of small surface mount inductors and capacitors. Lowoutput voltages are easily supported with the 0.6V feedback reference voltage
标签： pw2053
上传时间： 2022-02-14
上传用户：jason_vip1
CPCI_E标准规范 CompactPCI® Express SpecificationThe documents in this section may be useful for reference when reading the specification. The revision listed for each document is the latest revision at the time this specification was published. Newer revisions of these documents may exist, so refer to the newest revision. Many of these documents are referenced throughout this specification. Refer to the newest revision of the document unless a specific revision is referenced. • PCI Express Base Specification 3.0. PCI Special Interest Group (PCI-SIG). • PCI Express Card Electromechanical (CEM) Specification 3.0. PCI Special Interest Group (PCI-SIG). • PCI Express to PCI/PCI-X Bridge Specification, Rev. 1.0. PCI Special Interest Group (PCI-SIG). • PCI Express Jitter White Paper. PCI Special Interest Group (PCI-SIG). • PCIe Rj Dj BER White Paper. PCI Special Interest Group (PCI-SIG). • PHY Electrical Test Specification for PCI Express Architecture. PCI Special Interest Group (PCI SIG). • System Management Bus (SMBus) Specification, Version 2.0. Smart Battery System Implementer’
标签： CPCIE
上传时间： 2022-02-23
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RFID（Radio Frequency Identification）中间件的设计与系统的多个层相关，如RFID电子标签的数据采集、标签数据管理、RFID系统安全等。对于不同层，不同的设计和实现被具体应用所采纳。然而，以这种方法设计出来的中间件就会缺乏一致性和灵活性，设计者不能够以一个统一的框架设计RFID中间件。面向服务的RFID中间件架构SOA（Service-oriented Architecture）是一种用于RFID各个应用领域软件开发的框架，它是一种以服务为中心的包含运行环境、编程架构风格在内的一套新的分布式软件系统构造方法和环境。使用SOA开发RFID中间件，能很好地改善软件设计中的整体性、灵活性和统一性。SOA是RFID中间件设计的基础，本文针对RFID中间件设计中存在的一些问题，如EPC编码的自动解析、RFID读写器的接入、RFID标签数据的交换或共享、RFID系统安全等，提出了面向服务的RFID中间件平台架构。本文用SOA的设计原则建立RFID中间件的软件构架，然后通过系统集成服务的方式——查询服务、调用服务和提供服务清晰地定义出RFID读写器管理服务、标签信息服务、RFID安全服务等。使其适合于不同的RFID应用，并且根据EPCglobal 标准实现EPC编码的自动解析，这样不仅有助于在不同平台间RFID标签数据的交换和集成，而且对于不同的应用降低了构建RFID系统的难度。
标签： rfid
上传时间： 2022-06-25
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This manual describes the ARM Debug Interface Architecture Specification ADIv6.0 (ADIv6).
上传时间： 2022-07-03
上传用户：zhaiyawei
