HUAWEI EM820W HSPA+ PC Embedded Module

 

Hardware Guide

Description of the Application Interfaces

The high-speed signal characteristics are in accordance with the Eye Pattern

Templates of the USB2.0 signal specification.

3.6 USIM Signals

The USIM is a smart card for UMTS/GSM cellular applications. The USIM provides the required subscription information to allow mobile equipment to attach to a GSM or UMTS network. The USIM also provides the subscriber's verification procedures as well as authentication methods for network authentication during the process of attaching to a network.

Table 3-5 USIM pins

Pin

Name

Description

 

 

 

8

UIM_PWR

Power source for the external

 

 

UIM/SIM.

 

 

 

10

UIM_DATA

External UIM/SIM data signal.

 

 

 

12

UIM_CLK

External UIM/SIM clock signal.

 

 

 

14

UIM_RESET

External UIM/SIM reset signal.

 

 

 

Direction to Module

Output

Input/output

Output

Output

It is recommended that the SIM card is inserted only after the power supply of the module is disconnected; otherwise the SIM card may get destroyed.

3.6.1 USIM Interface Schematic Reference

There is no SIM card interface circuit in the EM820W module, and users need to add the USIM interface circuit. Figure 3-2 shows the definition of interface signals and the typical USIM interface schematic.

Issue 01 (2010-12-31)

Huawei Proprietary and Confidential

10

Copyright © Huawei Technologies Co., Ltd.

 

 

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Huawei EM820W manual Usim Signals, Usim Interface Schematic Reference, Pin Name Description, Uim/Sim
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EM820W specifications

The Huawei EM820W is a cutting-edge mobile broadband device that exemplifies Huawei's commitment to innovation and excellence in the telecommunications sector. Designed for seamless connectivity, the EM820W caters primarily to users who demand high-speed data access while on the move.

One of the standout features of the Huawei EM820W is its support for high-speed 4G LTE connectivity. With download speeds that can reach up to 150 Mbps and upload speeds of up to 50 Mbps, users can enjoy smooth streaming, rapid downloads, and responsive online gaming experiences. This capability makes the device an ideal choice for both individual users and business professionals who rely on robust internet access.

The EM820W is equipped with a compact and lightweight design, making it highly portable. This device can be easily carried in a pocket or bag, allowing users to stay connected wherever they go. Its plug-and-play feature simplifies the setup process, ensuring that even those who are not tech-savvy can easily get online.

Another notable aspect of the Huawei EM820W is its compatibility with a wide range of operating systems, including Windows, macOS, and various distributions of Linux. This versatility means that users can connect the device to their preferred platforms without facing compatibility issues, enhancing the overall user experience.

The device also incorporates advanced security features to safeguard user data, including built-in encryption protocols. This is particularly important for business users who require secure connections for sensitive transactions and communications.

In addition to its connectivity capabilities, the EM820W showcases energy-efficient technologies that optimize battery performance. The device is designed to consume minimal power, allowing users to prolong usage times without frequently recharging.

The Huawei EM820W comes with a user-friendly interface, enabling users to easily manage their connections and monitor data usage. This feature is valuable for those who need to track their internet consumption to avoid exceeding data limits imposed by service providers.

With its blend of speed, portability, and user-oriented features, the Huawei EM820W stands out as a reliable solution for those seeking robust mobile broadband capabilities. Whether for personal use or professional needs, this device ensures that users remain connected in an increasingly digital world.
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