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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Image 24
Huawei MC509 CDMA LGA manual Vcoin Interface, Sudden momentary power loss, Real-time clock, Sec 5μF 0805 3μF 7μF 8μF 1206

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.