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onsemi RSL15 BLUETOOTH® 5.2 Wireless MCUs

onsemi RSL15 BLUETOOTH® 5.2 Wireless MCUs are ultra-low power, secure, high-performance flash-based Bluetooth Low Energy 5.2 microcontrollers. The RSL15 features an angle of arrival/angle of departure localization, along with extended sensor interfacing. In addition, the device offers a coded PHY for extra long-range capabilities and firmware over the air (FOTA) to support in-field products with features, bug fixes, and security updates.

The onsemi Wireless MCUs provide two versions, a 284kB Flash version, and a 512kB Flash version, both in a QFN40 package.

Features

  • Rx Sensitivity (BLE mode, 1Mbps): −96dBm
  • Rx Sensitivity (BLE mode, 2Mbps): −94dBm
  • Configurable Tx power: −17dBm to +6dBm
  • Data rate of 62.5kbps to 2000kpbs
  • Arm® Cortex® M33 processor clocked up to 48MHz
  • Cybersecurity platform with Arm CryptoCell™-312 for end-to-end product security with secure boot, root of trust, lifecycle management, secure key management, and application and data security
  • Arm TrustZone® to enable secure execution zones
  • Bluetooth Low Energy 5.2 certified
    • Up to 10 simultaneous connections
    • Long-range (Coded PHY)
    • 2Mbit PHY (High speed)
    • Angle of Arrival (AoA) and Angle of Departure (AoD)
    • Advertising extensions
    • Backwards compatibility and support for earlier Bluetooth Low Energy specifications including 5.1, 5.0, 4.2, 4.1 and 4.0
  • Ultra-low-power operation
    • Sleep mode (GPIO wakeup) @ 3V VBAT: 36nA
    • Sleep mode (Crystal oscillator, RTC Timer wakeup) @ 3V VBAT: 81nA
    • Smart sense mode allows some digital and analog peripherals to remain active to monitor and acquire data from external sensors at a very low system-level power consumption
    • Continuous ADC operation in Smart sense mode with wakeup on ADC threshold @ 3V VBAT: 186nA
    • Peak Rx current 1Mbps @ 3V VBAT: 3mA
    • Peak Tx current 0dBm output power @ 3V VBAT: 4.3mA
    • Non-connectable advertising at 5s intervals @ 3V VBAT: 1.1A (Average)
    • Connectable advertising at 5s Intervals @ 3V VBAT: 1.3A (Average)

Applications

  • Industrial automation and sensing
  • Connected medical sensors
  • Wearables
  • Asset tracking
  • Electronic tags and access control
  • Electronic labels
  • Data loggers
  • Smart appliances
  • Energy harvesting switches

Videos

High−Level Block Diagram

Block Diagram - onsemi RSL15 BLUETOOTH® 5.2 Wireless MCUs

Additional Resources

Associated Eval Board

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Published: 2021-06-24 | Updated: 2025-02-26