In alliance with Qualcomm Technologies, STMicroelectronics unveiled the ST67W611M1 series IoT module, which combines ST’s adaptable STM32 microcontroller ecosystem with Qualcomm’s QCC743 multiprotocol connectivity system-on-chip (SoC). The modules add wireless connectivity to STM32-based systems and simplify support for new IoT standards like Matter and Thread. They are intended for a variety of IoT applications, such as wearables, smart homes, and industrial sensors.
The ST67W611M1 IoT module, the first to combine Wi-Fi 6 (802.11 b/g/n/ax) and Bluetooth Low Energy 5.4 with support for the Matter and Thread protocols, has been optimized for seamless communication with STM32 microcontrollers (both MCU and MPU). They function as external wireless coprocessors, with the ST67W611M1 handling radio functions and the STM32 MCU controlling the primary application. Up to 20 dBm output power, a 40 MHz crystal, 4 MB embedded flash with OTA updates, hardware cryptographic acceleration, and advanced security features consisting of secure boot and cryptographic accelerators that comply with PSA Certified Level 1 protection standards are some of the key features. ST provides three versions that adhere to the same 32 pin LGA footprint and are fully integrated with the STM32Cube ecosystem. An onboard PCB antenna is part of the B model. An RF connector for an external antenna is included with the U model.
STMicroelectronics ST67W611M1 series IoT module Specifications:
The module is based on the Qualcomm QCC743 microcontroller and integrates 4MB of embedded NOR flash with OTA update support. It features Wi-Fi 6 (IEEE 802.11 b/g/n/ax) with 20/40 MHz bandwidth, 1T1R operation, and a 2.4 GHz RF transceiver, along with Bluetooth Low Energy 5.4 supporting up to 2 Mbps. Wireless performance includes up to +21 dBm Wi-Fi and +10 dBm BLE transmit power, receiver sensitivity of up to –70/–67 dBm for Wi-Fi (MCS9, HE20/HE40) and –99/–96.5 dBm for BLE 1M/2M, and application throughput of up to 17 Mbps (TCP). It also supports Thread combo operation with Matter protocol compatibility.
ST67W611M1-block-diagram
On the hardware side, the module includes an embedded 40 MHz high-precision quartz for stable RF performance and offers both integrated and external antenna options. Standard interfaces include SPI and UART. Security features include integrated hardware cryptographic acceleration, secure boot, and secure debug support, making it suitable for secure IoT deployments. The design supports low-power operation, targeting battery-powered IoT devices.
The module operates from a 3.3 V input supply with 1.8 V/3.3 V I/O voltage support. It is rated for industrial temperature ranges, with operating temperatures from –40°C to +85°C and storage up to +125°C, and supports up to 90% non-condensing humidity. Certifications include PSA Certified Level One, with Wi-Fi and BLE certifications targeted, along with global regulatory approvals such as CE/RED, FCC, IC, BIS/WPC, and others. It is offered in a compact module form factor and is covered under a 10-year longevity program.
STM32-ST67W611M1-IoT-Module
Software support is provided through the X-CUBE-ST67W61 package, which includes Wi-Fi and Bluetooth drivers along with ready-to-use examples. Development and debugging are supported via STM32CubeIDE, while STM32CubeMX is used for code generation and configuration. Host communication is handled over SPI. The X-CUBE-ST67W61 STM32Cube extension package enables STM32 microcontrollers to interface with the ST67W611M1 network co-processor, where the STM32 acts as the application host and the ST67W611M1 runs the full network stack in Network Co-Processor (NCP) mode.
For rapid prototyping, ST offers an expansion board based on the ST67W611M1 that is compatible with STM32 Nucleo and Discovery platforms. The module is integrated into the X-NUCLEO-67W61M1, which uses a 32-pin LGA form factor and includes Arduino Uno V3 and Raspberry Pi 40-pin header connectors. The board also features a PCB antenna, a user button, and an LED, making it suitable for quick evaluation and development.
X-NUCLEO-67W61M1
Pricing for the ST67W611M1A6BTR variant starts at $8.22 for quantities of 1 to 9 units, dropping to $7.34 at 10 units, $6.81 at 25 units, and $6.21 at 100 units. The X-NUCLEO-67W61M1 expansion board is listed at $38.18 on the ST website. The STMicroelectronics website has more information.
Niladri Chowdhury