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Next-gen WiFi module enables IoT apps

Posted: 06 May 2011 ?? ?Print Version ?Bookmark and Share

Keywords:low-power embedded? Wi-Fi direct? wireless connectivity? peer-to-peer networking?

GainSpan Corp. has introduced the GS1500M, a high-performance 802.11 b/g/n WiFi module with WiFi Direct capability designed for embedded devices that require next-generation WiFi connectivity for security cameras, home appliances and industrial control systems.

The module has easy-to-add WiFi connectivity to standard 8-32 bit microcontrollers and is aimed at plug-and-play integration of WiFi into embedded platforms using SPI or UART interfaces.

Building on GainSpan's existing ultra-low power embedded Wi-Fi portfolio, the GS1500M enables new opportunities for Internet of Things (IoT) applications where 802.11b/g/n connectivity is a key requirement.

According to GainSpan, 802.11b has been optimized in its earlier GS1011M module for typical IoT applications and was designed to optimize cost of deployment, range and power consumption, while maintaining interoperability with existing access points.

According to the company, the GS1500M preserves the software architecture, feature set and pin-to-pin compatibility with the GS1011M module that is currently in production, which allows designers to leverage all previous hardware and software development work, preserve existing investments and ensures a smooth migration to 802.11b/g/n.


In addition, the GS1500M module also offers configurable antenna optionsbuilt-in or external antenna. It is single-sided and designed to be easily soldered down on the application baseboard.

On top of 802.11 b/g/n capability, the GS1500M supports the newly-released WiFi Direct standard from the WiFi Alliance, for improved peer-to-peer networking. As a result, WiFi devices can connect to one another even without an access point, enabling easy transfer of content anytime, anywhere.

Since the ease of provisioning a device onto the WiFi network is crucial in IoT applications, particularly for devices with no user control buttons or display screen, the GS1500M offers three other provisioning modesWiFi Protected Set-up (WPS), Web server-based Ad hoc provisioning and provisioning Access Point modesaside from other features, such as WiFi Personal and Enterprise security.

The company claims that the module utilizes a highly-integrated 802.11b/g/n WLAN radio with leading-edge receiver sensitivity and best-in-class transmit power of 18dBm, enabling excellent range. The module is fully certified for major worldwide regulatory regions and by the WiFi Alliance. It is suited for organizations with limited or no WiFi or RF expertise, as it not only eliminates RF design time but also reduces the burden of testing and global certification, allowing customers to focus on their core product and application.

The GS1500M module's highly-integrated architecture allows for effective and dynamic power management, as it features extensive low-power modeswith both a Sleep and Deep Sleep option. The module can be rapidly put to sleep to reduce power consumption without loss of data; the system can recover from the Deep Sleep state back to full operation in a few milliseconds.

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