Modules, Development Kits and Software on Low - Power Embedded Wi-Fi
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Product Overview

The GS1011M family of fully certified modules offers a quick, easy and cost effective way for device and appliances manufacturers to add Wi-Fi capabilities to their products. The module provides a serial UART or SPI interface, enabling connection to any embedded design utilizing a 8/16/32-bit microcontroller via simple commands. The GS1011M is an ideal solution for organizations with limited or no Wi-Fi or RF expertise, as it not only dramatically reduces RF design time but also removes the burden of testing and certification, allowing customers to focus on their core application, product or expertise. The module supports data rates up to 11 Mbps, is compliant with 802.11b and meets regulatory and Wi-Fi Alliance requirements.

Multiple software configurations are available for the stack running on the module. For applications utilizing a small 8 bit microcontroller host, the module supports a serial to Wi-Fi function and runs the full Wi-Fi and TCP/IP networking stacks, completely offloading the host. For applications utilizing more powerful microcontrollers, the networking stack and services can reside on the host while the module provides the IP to Wi-Fi functionality. In addition, it supports WEP/WPA/WPA2 security, Adhoc as well as Wi-Fi Protected Setup (WPS) for ease of provisioning.

GS1011M Embedded Design

GS1011M-based Embedded Design

Block Diagram

GS1011M Block Diagram


  • Brings Wi-Fi and web connectivity to any device with a microcontroller and serial HOST interface (UART or SPI)
  • Reduces development time, testing and certification burden, accelerating time to market
  • Fully contained solution minimizes host processor loading when needed
  • Easy device provisioning through adhoc or Wi-Fi Protected Set-up (WPS).
  • Ultra low power consumption through dynamic power management


  • Operates with standard 802.11 b/g/n access points at speed up to 11 Mbps (802.11 b rates)
    • Infrastructure or Adhoc mode
  • UART and SPI interface
    • Up to 5 Mbps data rate (SPI)
  • Full Wi-Fi stack including WPS and optional networking stack and services
  • 802.11i Security
    • WPA2-PSK, WPA, WEP
  • Certified modules

Module Highlights

  • Single power source of 3.3V
  • Regulatory (FCC) and Wi-Fi Certified
  • Rich I/O interfaces such as SPI, UART, GPIO, I2C, ADC, JTAG


Specification GS1011M
Radio Protocol IEEE 802.11b/g/n Compatible
RF Output Power (Typical) 9 dBm (Internal PA )
18 dBm (External PA)
RF Operating Frequency 2.4 - 2.497 GHz
Supported Data Rates 11, 5.5, 2, 1 Mbps (802.11b)
Antenna Options PCB Trace or U.FL connector for external antenna
Operating Temperature Industrial (-40°C to +85°C)
Security Protocols WEP, WPA/WPA2 - PSK, Enterprise, EAP-FAST, EAP-TLS, EAP-TTLS, PEAP
Networking Protocols UDP, TCP/IP (IPv4), DHCP, ARP, DNS, HTTP/HTTPS Client and Server
Certifications and Compliance Wi-Fi, FCC, IC, Japan, ETSI, RoHS
I/O Interface UART (2), SPI, I2C, ADC (2), WAKE (2), ALARM (2), GPIO(6), PWM, JTAG
Dimensions Internal PA = 32.5mm x 22.9mm (1.28 in X 0.9 in)
External PA = 36.8mm x 22.9mm (1.45 in x 0.9 in)
Power Source 3.3V
Power Consumption (Typical) Standby = <5uA
Receive = TBD
Transmit = TBD (Internal PA)
Transmit =TBD (External PA)
  • Soldered-down, low-power Wi-Fi module with different options of antenna and power amplifiers.
  • Operates with 802.11b/g/n access points at speeds up to 11Mbps (802.11b)
  • I/O interfaces: UART, SPI, GPIO, I2C, ADC, JTAG.
  • Modules do not include latest firmware. Customers need to reprogram firmware from the GainSpan Technical Support site
  • Pack of 5 modules.


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