The WFM200S Series from Silicon Labs are Ultra Low-Power Wi-Fi® Network Co-Processor (NCP) SiP modules. They are designed for IoT Wi-Fi applications where optimal RF performance, low-power consumption, and secure end-to-end solution, together with fast time to market, are key requirements. These modules include a 2.4 GHz 802.11b/g/n radio (MAC and PHY layer), supporting Linux-based and RTOS-based hosts to deliver a complete Wi-Fi solution. The SiP modules contain an embedded antenna, high frequency crystal, and shield. They integrate a balun, T/R switch, LNA, and PA and support co-existence with external 2.4 GHz transceivers via a PTA interface.
The WFM200S Series modules have 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. They consume 145 mA of current in Tx mode, 42 mA of current in Rx mode, 22 μA of current in sleep mode, and 0.5 μA of current in shutdown mode. High-speed SPI and SDIO host interfaces provide flexibility and throughput.
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. These Wi-Fi transceivers are available in SiP modules that measure 6.5 x 6.5 mm and are ideally suited for home automation products like security cameras, motion detectors, smart locks, video doorbells, thermostats, and smoke detectors. In the industrial and consumer space, ideal applications are point-of-sale terminals, portable printers, wireless tools, and wireless sensors.
