STMicroelectronics has released its ST67W611M1, a low-power Wi-Fi 6 and Bluetooth LE combo co-processor module. This all‑in-one design and capability contribute to reduced costs and enhanced performance, making it an attractive choice for IoT edge devices requiring a single‑chip solution.
The ST67W611M1 operates as an IoT connectivity transceiver, with an external STM32 host MCU running applications. The module integrates:
• A PCB antenna (version -B), an RF connector (version-U) for connection of an external antenna, or a version with a dedicated RF pin typically for support of multi-antenna implementations with external RF switch.
• 4 MB NOR flash.
• 40 MHz high-precision quartz for optimal RF performance.
• SMPS functionality with the associated reduced BoM.
• Data interface through SPI.
• 32768 Hz internal oscillator. For low-power use cases, two pins are provided to use a 32768 Hz quartz crystal. One pin can also be used to receive an accurate 32768 Hz from the host processor.
The module combines IEEE 802.11b/g/n/ax with Bluetooth LE 5.4 and IEEE 802.15.4 (Thread) also implemented. Wi-Fi and Bluetooth can run concurrently. Maximum transmit power for Wi-Fi is 2 dBm, while the Bluetooth has a maximum transmit power of 10 dBm. Rx sensitivity for Bluetooth is -96,5 dBm.
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