Wireless IoT modules enable Wi-Fi, Bluetooth and 802.15.4 networking

STMicroelectronics has gone into volume production with a wireless system-on-chip (SoC) module which provides a ready-to-use board-mount implementation of Wi-Fi^® and Bluetooth^® networking. 

The ST67W611M1 is based on a Qualcomm^® QCC743 multi-protocol 2.4GHz radio SoC, and is supplied pre-loaded with Wi-Fi 6 and Bluetooth 5.4 protocol firmware. It provides an easy way for users of any STM32 microcontroller or microprocessor to add wireless network capability to their product designs, and requires no RF design expertise on the part of the developer to create a working solution. 

ST is expected to provide software updates for the ST67W611M1 by the end of 2025 which will add support for the Matter protocol over Wi-Fi networks, as well as Thread networking. The module supports concurrent Wi-Fi and Bluetooth Low Energy communication. 

All RF front-end circuitry is built-in, including power and low-noise amplifiers, an RF switch, balun, plus 4Mbytes of Flash memory for code and data storage, and a 40MHz crystal. The ST67W611M1 can be specified with a PCB antenna, an RF connector for an external antenna, or a dedicated RF pin, which is valuable in multi-antenna implementations with an external RF switch.

The module, which is certified to PSA Level 1, features advanced hardware security features, including hardware cryptographic accelerators, as well as secure boot and secure debug. 

The module is supplied in a 32-lead LGA package, and can be used in simple, low-cost PCB designs with as few as two layers, many competing products require a four-layer PCB. A reference design, the STDES-67W61BU-U5, provides a recommended layout and associated bill-of-materials for applications based on the ST67W611M1 and an STM32 MCU.