Huawei MC509 CDMA LGA manual Vcoin Interface, Sudden momentary power loss, Real-time clock

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HUAWEI MC509 CDMA LGA Module

 

Hardware Guide

Description of the Application Interfaces

For detailed information about power supply design and printed circuit board (PCB) design, see the HUAWEI Module Power Supply Design Guide and the HUAWEI LGA Module PCB Interconnection Design Guide

3.3.3 VCOIN Interface

VCOIN pin of MC509 module is used as backup power from the 3 V coin cell for SMPL, RTC, and 32 kHz crystal oscillator backup; a capacitor (rather than a coin cell) can be used if only SMPL is supported. Used as an analog output for coin cell or capacitor charging.

Sudden momentary power loss

If the monitored VBAT drops out-of-range (<3.3V nominal), the SMPL feature may initiate a power-on sequence without software intervention, and then VBAT returns in- range within a programmable interval of between 0.5 and 2.0 seconds. SMPL achieves immediate and automatic recovery from momentary power loss. A valid voltage on VCOIN is required to run the SMPL timer. If a capacitor is used instead of a coin, it must be connected between VCOIN and the ground. The capacitor must be charged to operate properly as the SMPL power source. The capacitor value depends on the SMPL timer setting.

Table 3-3Keep-alive capacitor values vs.SMPL timer settings

SMPL timer setting

Capacitor value

Capacitor package

 

 

 

0.5 sec

1.5μF

0805

 

 

 

1.0 sec

3.3μF

0805

 

 

 

1.5 sec

4.7μF

0805

 

 

 

2.0 sec

6.8μF

1206

 

 

 

If the SMPL counter expires without VBAT returning to its valid range, the MC509 must undergo the normal power-on sequence whenever the VBAT is detected.

Real-time clock

If RTC is used, a manganese-lithium rechargeable battery is recommended, for example, the SII Micro Parts HB-414 and the Panasonic ML-series. Two sets of coin cell specifications are compared in Table 3-4 .When the MC509 is off, RTC and its oscillator source are still active, provided by a coin cell battery which is installed. This allows continued monitoring of RTC alarms programmed via software.

Issue 01 (2011-04-08)

Huawei Proprietary and Confidential

24

Copyright © Huawei Technologies Co., Ltd.

 

 

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Contents Issue Date Hardware GuideNo Warranty About This Document HistoryVersion Date Chapter Descriptions Summary Chapter DetailsContent Description of the Application InterfacesElectrical and Reliability Features Safety Information Introduction Product name RF Band BandwidthFeature Description Overall DescriptionAbout This Chapter Function OverviewSMS TBDCircuit Block Diagram  Waste Electrical and Electronic Equipment DirectiveWEEEApplication Block Diagram 2Application block diagram of the MC509 moduleDescription of the Application Interfaces LGA InterfacePin Name Description DC Characteristics Normal Min Typical MaxJtagtms VCCEXT2VCCEXT1 UimvccWdisable MIC2NMIC1P MIC1NWakeupout Gpio JtagtdoUartdsr Gpio Uartrts GpioPoweronoff UimresetUartring Gpio Uartrx GpioEaroutn EaroutpSpkroutp SpkroutnGpsant Auxant132 133134 135Power Interface OverviewVbat Interface Sudden momentary power loss Smpl timer setting Capacitor value Capacitor packageVcoin Interface Real-time clockOutput Power Supply Interface 4Coin cell characteristicsParameter Specifications HB-414 ML-series Uimvcc PINSignal Control Interface Pin Pin Name Description DC Characteristics Min Typical MaxInput Signal Control Pins Power-On Time Sequence 3shows the connections of the Poweronoff and Resinn pinsParameter Comments TimeNominal Units Values Parameter Comments TimeNominal values UnitsOutput Signal Control Pin TBD Wakeupin Signal Resinn6Connections of the Wakeupin and Wakeupout pins Uart InterfaceCircuit Recommended for the Uart Interface USB data signal D+ USB data signal DUSB Interface Pin No Pin Name Description10DC Electrical Characteristics of USB VOHmin VOLmax VIHmin VILmaxUIM Card Interface Circuit Recommended for the UIM Card InterfaceUimpwr NullAudio Interface ESD Protection for the UIM Card InterfaceAnalogue Audio DCE Digital Audio PcmsyncPcmdin PcmdouPrimary Mode General Purpose I/O InterfacePin No Description Name Min Type MaxPin No Pin Name Description DC Characteristics Min Type Max VCCEXT2 6V PowerJtag Interface RF Antenna InterfaceNC Pins Pin No Description DC Characteristics Name Min Typical MaxGpsant RF GPS RF Specifications Antenna Installation GuidelinesOperating Frequencies 错误！未找到引用源。 shows the RF bands supported by MC509 RF bandsConducted Rx Sensitivity and Tx Power Conducted RF MeasurementTest Environment Test StandardsConducted Transmit Power Antenna Design IndicatorsAntenna Design Requirements Antenna EfficiencyPolarization Radiation PatternGain and Directivity Interference Cdma Antenna RequirementsAntenna for MC509 must fulfill the following requirements Cdma Antenna RequirementsRadio Test Environment Passive TestsActive Tests Electrical and Reliability Features Symbol Specification Minimum Maximum Unit ValueExternal power voltage Input voltage of standby Power for the RTC Data pin voltageWorking and Storage Temperatures and Humidity Electrical Features of Application InterfacesSpecification Minimum Value Maximum Value Unit Parameter Description Minimum Value Maximum Value UnitPower Supply Features Input Power SupplyPower Peak Maximum Normal Maximum Parameter Minimum Typical Maximum Ripple Unit ValueReliability Features Power ConsumptionWorking mode Max Unit Test Condition StandardTest Condition Standard EMC and ESD Features − USBMechanical Specifications Dimensions and interfacesPCB Pad Design Label 2PCB pad designPacking System NameplateCertifications CertificationFCC CCC NCC Tick JgpssiEnvironmental Protection Certification and Test RoHSSGS RoHS Test Restricted Substance Density Threshold ppmWeee National Compulsory Certification PVC-freeProduct Certification Importance of Product CertificationProduct Certification Classifications Certification Modes DOC Certification Types CE CertificationFCC Certification Comply with the following rules when making DGT marks NCC DGT CertificationTick Certification Telec and Jate Certification JapanAn example of the DGT mark  Telecom Engineer Center TelecXxxxxx is the company number issued by the IC Huawei 6369A IC Certification Canada Jate IC XXXXXX-YYYYYYYYChinese Certifications  YyyyyyyyIssue 01 Huawei Proprietary and Confidential RoHS, REACH, JGPSSI, and Chinese Environmental Protection  CCC− PBB − Pbde Huawei MC509 Cdma LGA Module Hardware Guide Certifications Guide to Product Certification CE Certification and FCC CertificationGCF and Ptcrb GCF CertificationIC Certification NCC CertificationHuawei MC509 Cdma LGA Module Hardware Guide Certifications Ptcrb Certification Overall-System CertificationWcdma FDD Overall-System GCF Certification Overall-System Ptcrb Certification GCF and Ptcrb Certification Safety Information InterferenceMedical Device Area with Inflammables and ExplosivesSafety of Children Traffic SecurityAirline Security Environment ProtectionCare and Maintenance Laws and Regulations ObservanceEmergency Call Specific Absorption Rate SARRegulatory Information CE Approval European UnionFCC Statement Appendix a Circuit of Typical Interfaces Page Appendix B Acronyms and Abbreviations Acronym or Abbreviation ExpansionPDU RTCUIM TTL

MC509 CDMA LGA specifications

The Huawei MC509 CDMA LGA (Local Gateway Access) is a versatile and efficient communication device designed for CDMA (Code Division Multiple Access) networks. It serves as a gateway that facilitates high-speed data transmission and reliable voice services in mobile communications. This device is particularly well-suited for businesses and service providers looking to enhance their CDMA infrastructure.

One of the standout features of the Huawei MC509 is its ability to support multiple user connections simultaneously. This capability allows it to handle a large volume of calls and data transfers, making it ideal for environments with heavy communication demands. The device is built with robust processing power, ensuring it can manage traffic effectively without any degradation in service quality.

In terms of technology, the Huawei MC509 is designed to seamlessly integrate with existing CDMA networks. It employs advanced signal processing techniques to optimize call quality and data throughput. Additionally, the device supports a variety of bandwidth options, which ensures flexibility in deployment based on specific network requirements.

The MC509 also boasts a modular design, allowing for easy upgrades and scalability. As network demands evolve, service providers can expand the functionality of the device by adding new modules without the need for significant hardware changes. This future-proofing aspect makes it a smart investment for organizations aiming to grow their communication capabilities over time.

Security is another critical characteristic of the Huawei MC509. It features comprehensive security protocols to ensure that voice and data transmissions remain private and secure from unauthorized access. This focus on security makes the device suitable for enterprises that handle sensitive information.

Moreover, the Huawei MC509 has been engineered for energy efficiency. Its smart power management capabilities not only reduce operational costs but also contribute to a greener technology solution. This aspect is increasingly important in today’s environmentally conscious market.

Overall, the Huawei MC509 CDMA LGA is a powerful and adaptable communication solution. With its superior call handling capacity, integration capabilities, modular design, security features, and energy efficiency, it stands out as an essential tool for enhancing CDMA network infrastructure. Organizations that invest in this device will benefit from improved communication services, ultimately leading to increased productivity and customer satisfaction.
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