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

The GS1011MxxS family of size-optimized, fully certified modules offers a quick, easy and cost effective way for device and appliance manufacturers to add Wi-Fi capabilities to their products, while offering a smaller footprint for space constrained application boards. The module dimensions are 28.7mm * 19.4mm, resulting in board area savings of approximately 34% when compared to the GS1011MEx modules. The GS1011MxxS modules provide multiple serial UART or SPI interfaces, enabling connection to embedded designs utilizing an 8/16/32-bit microcontroller, via simple commands. These are lower pin-count modules (36 pins) compared to full-featured GS1011Mxx modules (48 pins). The GS1011MxxS 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/g/n wireless networks 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 full Wi-Fi and TCP/IP networking stacks, completely offloading the host. In addition, it supports WEP/WPA/WPA2 Security, Ad-hoc and Limited AP modes as well as Wi-Fi Protected Setup (WPS) for ease of provisioning.

GS1011MIPS/MEPS/MEES Embedded Design

GS1011MIPS/MEPS/MEES Embedded Design

The module family consists of three different SKUs for antenna configuration and output power. The module SKUs are single sided, pin compatible, with castellation on the edges for I/O connection so module can be soldered down on customer application base-board.

SKUs Power Amplifier Antenna Option
PCB Trace Antenna
PCB Trace Antenna
External Antenna (u.FL)

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 Ad-hoc, Limited AP modes 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 (802.11b)
      • Infrastructure or Adhoc mode
    • Two serial UART ports
      • Clock rates of up to 921.6kbps
    • Two SPI ports
      • Supports SPI Master/Slave modes
      • Clock rates of up to 11 Mbps (master mode) and 1.4Mbps (slave mode)
    • Full Wi-Fi stack including WPS and optional networking stack and services
    • 802.11i Security - WEP, WPA, WPA2-PSK Personal and Enterprise

Module Highlights

    • Single power source of 3.3V
    • Planned Certification (FCC/IC, ETSI, Wi-Fi)
    • Rich I/O interfaces : SPI, UART, GPIO, I2C, ADC


Radio Protocol IEEE 802.11b/g/n Compatible
RF Output Power (Typical) 8 dBm (GS1011MIxS)
18 dBm (GS1011MExS)
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 (in planning) Wi-Fi, FCC, IC, ETSI, RoHS
I/O Interface UART (2), SPI (2), I2C, ADC (1), ALARM (2), GPIOs (20), PWM
Dimensions 28.7mm x 19.4mm x 3.35mm, 36-pin Surface Mount Package
Power Source 3.3V
Power Consumption (Typical) Standby Power (Typical) < 7uA (Standby - Lowest power state (RTC Active))
  • 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 : SPI, UART, GPIO, I2C, ADC.
  • 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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