高通qualcommon藍牙芯片QCC3056詳細(xì)規(guī)格書共有112頁，開發(fā)人員必備手冊 支持藍牙標(biāo)準(zhǔn)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.主要特點如下。
上傳時間： 2022-01-24
上傳用戶：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
標(biāo)簽： pw4556
上傳時間： 2022-02-11
上傳用戶：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
標(biāo)簽： pw4055
上傳時間： 2022-02-11
上傳用戶：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
標(biāo)簽： pw2330
上傳時間： 2022-02-11
上傳用戶：
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
標(biāo)簽： pw2205
上傳時間： 2022-02-11
上傳用戶：
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
標(biāo)簽： pw2163
上傳時間： 2022-02-11
上傳用戶：
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
標(biāo)簽： pw2053
上傳時間： 2022-02-14
上傳用戶：jason_vip1
CPCI_E標(biāo)準(zhǔn)規(guī)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’
標(biāo)簽： CPCIE
上傳時間： 2022-02-23
上傳用戶：
RFID（Radio Frequency Identification）中間件的設(shè)計與系統(tǒng)的多個層相關(guān)，如RFID電子標(biāo)簽的數(shù)據(jù)采集、標(biāo)簽數(shù)據(jù)管理、RFID系統(tǒng)安全等。對于不同層，不同的設(shè)計和實現(xiàn)被具體應(yīng)用所采納。然而，以這種方法設(shè)計出來的中間件就會缺乏一致性和靈活性，設(shè)計者不能夠以一個統(tǒng)一的框架設(shè)計RFID中間件。面向服務(wù)的RFID中間件架構(gòu)SOA（Service-oriented architecture）是一種用于RFID各個應(yīng)用領(lǐng)域軟件開發(fā)的框架，它是一種以服務(wù)為中心的包含運行環(huán)境、編程架構(gòu)風(fēng)格在內(nèi)的一套新的分布式軟件系統(tǒng)構(gòu)造方法和環(huán)境。使用SOA開發(fā)RFID中間件，能很好地改善軟件設(shè)計中的整體性、靈活性和統(tǒng)一性。SOA是RFID中間件設(shè)計的基礎(chǔ)，本文針對RFID中間件設(shè)計中存在的一些問題，如EPC編碼的自動解析、RFID讀寫器的接入、RFID標(biāo)簽數(shù)據(jù)的交換或共享、RFID系統(tǒng)安全等，提出了面向服務(wù)的RFID中間件平臺架構(gòu)。本文用SOA的設(shè)計原則建立RFID中間件的軟件構(gòu)架，然后通過系統(tǒng)集成服務(wù)的方式——查詢服務(wù)、調(diào)用服務(wù)和提供服務(wù)清晰地定義出RFID讀寫器管理服務(wù)、標(biāo)簽信息服務(wù)、RFID安全服務(wù)等。使其適合于不同的RFID應(yīng)用，并且根據(jù)EPCglobal 標(biāo)準(zhǔn)實現(xiàn)EPC編碼的自動解析，這樣不僅有助于在不同平臺間RFID標(biāo)簽數(shù)據(jù)的交換和集成，而且對于不同的應(yīng)用降低了構(gòu)建RFID系統(tǒng)的難度。
標(biāo)簽： rfid
上傳時間： 2022-06-25
上傳用戶：
This manual describes the ARM Debug Interface architecture Specification ADIv6.0 (ADIv6).
上傳時間： 2022-07-03
上傳用戶：zhaiyawei
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