WF200 Data Sheet: Wi-Fi Network Co-Processor The Silicon Labs WF200 is an Ultra Low Power Wi-Fi transceiver or network co-pro- KEY POINTS cessor (NCP) targeted for applications where optimal RF performance, low-power con- sumption, and secure end-to-end solution, together with fast time to market, are key re- quirements. IEEE 802.11 b/g/n compliant TX power: +17 dBm (at pin) The WF200 integrates the Balun, T/R switch, LNA and PA for best possible RF perform- RX sensitivity: -96.7 dBm (at pin) ance. Co-existence with other external 2.4GHz radios is supported. Integrated antenna diversity support WF200 has been optimized for resource and power constrained devices at the RF, pro- Ultra low power consumption tocol, and firmware levels. Power conscious devices can take advantage of these fea- Secure and signed software tures in both active and sleep modes. Encrypted host interface communication Linux and RTOS host support For security sensitive applications, WF200 provides secure boot and a secure & encryp- ted host interface. Robust security is made possible with a native integrated True Ran- 4x4 QFN32 package dom Number Generator and OTP memory for confidential encryption key storage. The WF200 fits well with Linux-based and RTOS-based host processors. WF200 sup- ports both the 802.11 lower MAC and the 802.11 full MAC architectures. It communi- cates with the external host controller over the SPI or SDIO interface. silabs.com Building a more connected world. Rev. 1.1 Table of Contents 1. Features List ...............................4 2. Ordering Guide ..............................5 3. System Overview..............................6 3.1 Introduction...............................6 3.2 Wi-Fi Supported 2.4 GHz Bandwidth and Channels .................6 4. Electrical Specifications ...........................7 4.1 Absolute Maximum Ratings..........................7 4.2 Operating Conditions............................8 4.3 Power Consumption ............................9 4.4 RF Transmitter General Characteristics .....................10 4.4.1 RF Transmitter Characteristics .......................11 4.5 RF Receiver General Characteristics ......................12 4.5.1 RF Receiver Characteristics........................13 4.6 Reference Oscillator and Clock Characteristics...................15 4.6.1 Crystal Requirements for using Internal Oscillator.................16 4.6.2 External Oscillator Required Characteristics...................17 4.6.3 Low Power 32.768 kHz Clock Input Requirements ................17 4.7 Interface Terminal Characteristics .......................18 4.7.1 Supply Terminal Specifications.......................18 4.7.2 Digital I/O Terminal Specifications......................18 4.8 Host Interface ..............................18 4.8.1 SPI Specification............................20 4.8.2 SDIO Specification ...........................21 5. Typical Applications and Connections..................... 22 5.1 Typical Application Circuit for SDIO Host Interface..................22 5.2 Typical Application Circuit for SPI Host Interface ..................23 5.3 Power States and Low-Power Modes .....................24 5.4 RF Connections .............................24 5.4.1 Antenna Ports.............................24 5.4.2 Antenna Diversity ...........................24 5.4.3 FEM Support.............................24 5.5 Clocks.................................26 5.5.1 XTAL I and XTAL O connections for Crystal ..................26 5.5.2 XTAL I and XTAL O connections for TCXO ..................26 5.5.3 LP CLK Port .............................26 5.6 Multi-Protocol Coexistence..........................26 6. Pin Descriptions ............................. 27 7. Package Outline ............................. 29 silabs.com Building a more connected world. Rev. 1.1 2