Silicon Labs WFM200S Series 2 Wi-Fi® SiP Module

Silicon Labs WFM200S Series 2 Wi-Fi® SiP (System in Package) Module is an ultra-low power transceiver module for IoT and Wi-Fi applications. The WFM200S has a 2.4GHz 802.11b/g/n radio (MAC and PHY layer), optimized for low power and optimal RF performance in crowded RF environments, supporting Linux-based and RTOS-based hosts to deliver a complete Wi-Fi solution. The WFM200S Module provides an output power of 15.1dBm with a receiver sensitivity of -96.3dBm. The device integrates a balun, T/R switch, LNA, and PA. For maximum flexibility, the Module is available both with and without an integrated antenna. Co-existence with external 2.4GHz transceivers is supported via a PTA interface.

The WFM200S has been optimized for resource and power-constrained devices at the RF, protocol, and firmware levels. Power conscious devices can take advantage of these features in both active and idle/sleep modes.

For security-sensitive applications, the WFM200S provides a secure boot and a secure, encrypted host interface. Robust security is made possible with the native integrated True Random Number Generator and OTP memory for confidential encryption key storage.

The WFM200S fits well with Linux-based and RTOS-based host processors. The device supports both the 802.11 split MAC architecture and the 802.11 full MAC software architecture. WFM200S communicates with the external host controller over the SPI or SDIO interface.

The Silicon Labs WFM200S Series 2 Wi-Fi® SiP Module is offered in a 6.5mm x 6.5mm LGA58 package, with a -40°C to +105°C operating temperature range.

Features

  • Module Features
    • Pre-certified for FCC, IC, CE, and Japan operation
    • Integrated antenna (with pad for antenna diversity)
    • Integrated matching network
    • Integrated crystal
  • Transceiver Features
    • 802.11 b/g/n Wi-Fi transceiver including the radio, baseband, MAC, security, and host interface
    • Superior link budget with integrated LNA, PA, and Balun
    • OTP included removing the need for an external EEPROM
    • Ultra-low power-optimized IoT solution
    • End-to-end security with hardware protected secure boot and encrypted host interface
    • 802.11 split and full MAC architecture support
    • Complete Network Co-Processor (NCP) support for Linux and RTOS external hosts
  • RF Features
    • +15.1dBm Tx power
    • -96.3dBm Rx sensitivity
    • Dual 2.4GHz antenna pads for full antenna diversity support
    • 2.4GHz co-existence; 2-, 3- and 4-wire PTA support
    • Integrated Balun, T/R switch, LNA, and PA for 2.4GHz
  • Standards/IEEE 802.11 and WFA
    • b – bit rates: up to 11Mbps
    • g – bit rates: up to 54Mbps
    • n – bit rates: up to 72.2Mbps
    • d – regulatory domains
    • e – QoS as per the definition in WMM specification
    • i – as per the definition in WPA2 specification
    • w – protected management frames
    • WMM Power save
    • WPA/WPA2 Personal
    • Supported with Host Security Supplicant:
      • WPA3
      • WPA2 Enterprise
    • WPS – Wi-Fi Protected Setup
  • Host Interfaces
    • SDIO (1-bit and 4-bit SD mode up to 26MHz)
    • SPI (1-bit up to 52MHz)
  • Peripheral Interfaces
    • External 32 kHz crystal for low power clock control
    • GPIOs (including wake-up and Tx/Rx activity monitoring)
  • Key MAC and Baseband Features
    • 1×1 802.11n with full 802.11b/g compatibilities, 72.2Mbps
    • Greenfield Tx/Rx for 802.11n optimal performance
    • Short Guard Interval (SGI) for 802.11 optimal throughput
    • A-MPDU Rx and Tx for high MAC throughput
    • Block Acknowledgement support
    • Rx Defragmentation
    • Roaming supported
    • Client, SoftAP modes supported
    • Concurrent AP + STA support
  • Security Features
    • Secure boot with roll-back prevention
    • Encrypted host interface, dedicated hardware acceleration block
    • Integrated True Random Number Generator
    • Secure key storage using protected OTP technology
    • AES/WEP hardware acceleration
  • Power Consumption
    • Rx (-96.3dBm@DSSS-1Mbps): 42.3mA
    • Tx (15.1dBm @DSSS-1Mbps): 145mA
    • Associated DTIM3 average current: 298μA
    • Associated Sleep Current: 22μA
    • Shutdown mode: 0.5μA
  • Electrical Characteristics
    • 1.62V to 3.6V (VDDD, VDDIO)
    • 3.0V to 3.6V (VDDPA)
  • Certifications
    • CE (EU), FCC (USA), ISED (Canada), MIC (Japan), KC (South Korea)
  • Package
    • -40°C to +105°C operating temperature range
    • 6.5mm x 6.5mm LGA58 SiP Module
    • RoHS and Reach compliant  

Applications

  • Industrial, Home, and Building automation
  • Home appliances
  • Security solutions
  • Retail and commercial
  • Commercial transportation
  • Consumer medical
  • Sports and fitness

Documents

  • Datasheet
  • Power Consumption Measurement Setup & Results
  • Hardware Design Guide
  • Multiprotocol Fundamentals

Block Diagram

Block Diagram - Silicon Labs WFM200S Series 2 Wi-Fi® SiP Module

Typical Application Circuit (SDIO)

Application Circuit Diagram - Silicon Labs WFM200S Series 2 Wi-Fi® SiP Module

Typical Application Circuit (SPI)

Application Circuit Diagram - Silicon Labs WFM200S Series 2 Wi-Fi® SiP Module

Silicon Labs WFM200S Series 2 Wi-Fi® SiP Module