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In this video,onsemi'sSteven Dean highlights very-low-power Bluetooth solutions, including theRSL15that only uses 40 nA in sleep mode and the tinyRSL10 SIP(Fig. 1).
The demo takes advantage of theRSL15-EVB evaluation kitthat ties into a smartphone app. The RSL10 is used in an energy-harvesting board that can send switch status via Bluetooth without needing a battery.
The RSL15 is built around the latest Arm Cortex-M33 with TrustZone and secure-boot support(Fig. 2). The Bluetooth Low Energy 5.2 front-end is built-in and it works well with a low-cost PCB antenna.
The RSL10 SIP is based on a Cortex-M3 and targets very-low-power mHealth wearables, appliances, and switches as well as devices like smart locks.
