RSL15 - Bluetooth® 5.2 Wireless MCU

1 DATA Semiconductor Components Industries, LLC, 2019 November, 2021 Rev. 01 Publication Order Number: RSL15 /DBluetooth) Wireless MCURSL15 IntroductionRSL15 is an ultra low power secure Arm Cortex M33processor based Bluetooth Low Energy Wireless MCU designedfor connected smart devices in industrial and medical comprehensive, yet easy to use Software Development Kit(SDK) provides sample applications that demonstrate the hardwarecapabilities to enable security with the Cybersecurity Platform,acquire sensor data in Smart Sense mode, configure the built in powermanagement and utilize Bluetooth Low Energy Features Bluetooth Low Energy Certified with Key Features: Up to 10 simultaneous connections Long Range (Coded PHY) 2 Mbit PHY (High Speed) Angle of Arrival (AoA) and Angle of Departure (AoD) Advertising Extensions Backwards compatibility and support for earlier Bluetooth LowEnergy specifications including , , , and Ultra low Power Operation.

2 Sleep Mode (GPIO Wakeup) @ 3 V VBAT: 36 nA Sleep Mode (Crystal Oscillator, RTC Timer Wakeup) @ 3 VVBAT: 81 nA Smart Sense Mode allows some digital and analog peripherals toremain 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 @ 3 V VBAT: 186 nA Peak Rx Current 1 Mbps @ 3V VBAT: 3 mA Peak Tx Current 0 dBm Output Power @ 3 V VBAT: mA Non Connectable Advertising at 5 s Intervals @ 3 V VBAT: mA (Average) Connectable Advertising at 5 s Intervals @ 3 V VBAT: mA(Average) Rx Sensitivity (BLE Mode, 1 Mbps): 96 dBm Rx Sensitivity (BLE Mode, 2 Mbps): 94 dBm Configurable Tx Power: 17 dBm to +6 dBm Data Rate of kbps to 2000 kpbs Arm Cortex M33 processor clocked up to 48 MHz Cybersecurity Platform with Arm CryptoCell 312 for End to endProduct Security with Secure Boot, Root of Trust, LifecycleManagement, Secure Key Management, and Application and DataSecurity Arm TrustZone to enable secure execution zonesQFN40 5x5, 485 CRSee detailed ordering and shipping information on page 2 ofthis data INFORMATIONKey Features (continued) Two Flash Memory Sizes Available, 284 kB Flash (NCH RSL15 284 101Q40 ACG) or 512 kB Flash (NCH RSL15 512 101Q40 ACG) 80 kB RAM (64 kB user RAM, 16 kBRAM for Baseband) Flexible Power Management: V V VBAT.

3 Directly connect V Silver oxide or 3 VCoin Cells without any external active components Two SPI ports with QSPI capability401 RSL15 AWLYYWWGG1 RSL15 = Specific Device CodeA= Assembly LocationWL= Wafer LotYY= YearWW= Work WeekG= Pb Free Package(Note: Microdot may be in either location)MARKING INFORMATION DevicePackageShippingNCH RSL15 284 101Q40 ACGQFN401500 Tape/ReelNCH RSL15 512 101Q40 ACGQFN401500 Tape/ReelAPPLICATIONSC onnected Device Drug Injection Pens Blood Glucose Meters Wearable Bracelets Blood Analyzers Virus Detectors Smart Toothbrushes Heart Rate Monitors Bottle Caps Sleep Monitors Avalanche Detectors Electronic Pens Electronic Bikes Bicycle Computers Pet Trackers E Stethoscopes Shavers Vacuum Cleaners SpO2 Monitors Wearable Head BandsSmart Building Electronic Access Badges Air Filter Sensors Windows Surveillance Smoke Alarms Key Pads Energy Harvesting Switches HVAC Systems Vending Machines Lighting Mesh ControlSmart Industry Electronic Tags Power Tools Shopping Cart Trackers Coldchain Monitors Electronic Labels Beverage Dispensers Charge Control Systems Worker Safety Applications Battery Management Systems Machine Monitors Data Loggers Helmets Pellet Tracking Electronic Wheel Nuts Food Tracking SensorsSmart Home

4 Smart Circuit Breakers Smart Thermometers Smart Light Switches Smart Meters Coffee Makers Smart Refrigerators Air Purifiers Garage Door Controls Sprinkler Control SystemsSmart City People and Asset Tracking Door Access Control Fleet Management Systems Outdoor Robots Bioprocessing Equipment Educational LEVEL BLOCK DIAGRAMF igure 1. High Level Block DiagramArm Cortex M33 FPUMPU284 kBor512 kBFlash Memory64 kB RAM(8 banks of 8 kB)Arm CryptoCell 312 Debug via SWJ DPCrystal and RC OscillatorsPower ManagementSecure Boot ROM4 x Timer (24 bit)Buck ConverterLDOTempSensorLow SpeedADCC urrentSourceSuccessiveApprox ADCSPI/QSPI(2x)I2C(2x)GPIOUARTACOMPPWM(5 x)8 bitACS PWMP ulse CounterDSP ExtensionTrustZoneDMAGPIO MUXB luetooth Low Energy Front EndULP Data Cortex M33 ProcessorThe Cortex M33 32 bit Armv8 M processor is designedfor IoT and deeply embedded applications that require highperformance, power efficiency and security. The processorhas many features to execute high performance applicationssuch a Floating Point Unit (FPU), DSP extensions andMemory Protection Unit (MPU).

5 Secure debug is donethrough the SWJ DP which combines JTAG DP andSW DP for either JTAG probe or Serial Wire Debug (SWD) PlatformThe Cortex M33 processor with TrustZone Armv8 Msecurity extensions forms the basis of the security Arm CryptoCell 312 allows for end to end productsecurity with Secure Boot with Root of Trust, securelifecycle management, secure key management, andapplication and data encryption using symmetric orasymmetric cryptography. Arm TrustZone enables securesoftware access control. User available cryptographicservices such as SHA1, SHA256, keyed hash messageauthentication code (HMAC) and True Random NumberGenerator (TRNG) allow for development of customproprietary security solutions. The TRNG conforms toNIST SP800 90B, NIST SP800 22, FIPS 140 2, and BSIAIS note that this mobile telecommunications RadioAccess Network (RAN) equipment is designed for civil use,which also meet the provisions of paragraphs to of theCryptography Note (Note 3 in Category 5 Part 2), havingan RF output power limited to W (20 dBm) or less, andsupporting 16 or fewer concurrent SubsystemThe RF architecture is based on a GHz RF Front Endthat implements the physical layer of the BLE standardas well as other proprietary or custom protocols.

6 The modemis of the FSK type with a single ended RF Port, whichalleviates the need for an external OperationBluetooth certified baseband and protocol stack hasfeatures such as 2 Mbps RF link, Angle Of Arrival,Angle Of Departure, and Coded PHY ( Long Range ).The hardware enables implementation of custom supports Angle of Arrival (AoA) andAngle of Departure (AoD) as defined by the BluetoothLow Energy standard along with RSSI for enhancedlocalization Power ManagementBuilt in DC DC converter with buck and LDO modesrequiring few external passive components allows for abroad voltage supply range. Any voltage in the range V to V can be used directly without the need forexternal power conversion allowing for simple use ofcommon coin cell batteries such as 3 V coins cells and Vsilver oxide ModesSeveral power modes are available to reduce powerconsumption while still maintaining system mode is configurable with RAM retention and wakeupsources.

7 Smart Sense mode allows some digital and analogperipherals to remain active to monitor and acquire datafrom external sensors at a very low system level ClockingTwo crystal oscillators and two internal RC oscillators areavailable on RSL15 to offer many clocking primary oscillator is based on a 48 MHz crystal, whichis necessary for any connected RF operation. The secondaryoscillator is based on a 32 kHz crystal, which can be used forprecision timing even in low power modes. When precisiontiming is not required, the internal fast RC oscillator can beused in place of the 48 MHz crystal oscillator for generalnon RF processing. Likewise, the internal 32 kHz RCoscillator can be used in place of the 32 kHz crystal oscillatorfor certain use cases. Additionally, 48 MHz and 32 kHzexternal clocks can be driven into RSL15 from externalclock to Digital Converters (ADCs) RSL15 has two ADCs, a high speed 12 bit sar adc forfast conversion of analog inputs up to 2 Msps and Low SpeedADC for slower conversion up to 50 ksps.

8 There is also anintegrated temperature sensor that can be read by the LowSpeed I/OGeneral purpose I/O can be mapped to GPIO, SPI, QSPI,I2C, UART, PWM, PCM, pulse counter, clock input/outputand analog functions. RSL15 facilitates an analogcomparator, as well as a DAC for generating bias voltagesfor external components, and a current source ArchitectureThe memory architecture is centered around the ArmCortex M33. The flash memory contains application codeas well as the protocol stack. The RAM architecture isflexible allowing for powering only the amount of memoryneeded for the application. A total of 64 kB user RAM isavailable, implemented as 8 times 8 kB. An additional 16 kBis available for the digital baseband hardware. A DMAcontroller is available for easy data streaming between aperipheral/interface and Development KitContains Eclipse based ON Semiconductor IDE plussupport for other industry standard developmentenvironments, Bluetooth protocol stack, sampleapplications, libraries and many other software componentsand tools to enable rapid application Compliant DeviceRSL15 is RoHS OVERVIEWI ntroductionRSL15 is a highly integrated secure Arm Cortex M33based Bluetooth Low Energy Wireless MCUsystem on chip with flash and RAM, built in powermanagement and an extensive set of peripherals.

9 The widesupply voltage input, flexible I/O and clocking scheme offermaximum design Block DiagramFigure 2. RSL15 Detailed Block DiagramFloating Point Unit (FPU)Memory Protection Unit (MPU)Arm Cortex-M33 PALNAS ynthesizerRCCRPLLMoDemDigital BaseBand16 kB RAMF lash284kB/512kBGPIO MUXT emperatureSensorSWJ-DP interfaceRF SystemSecure Boot ROMLow-SpeedADCC urrentSourceSuccessiveApprox ADCW atchdog TimerDC-DC ConverterPower ManagementVDDCVDDRF LDOVDDFLASH LDOVDDPAVDDA CHARGEPUMPRFVCCVDCVDDRFCAP0 CAP1 VDDAVDDRETVDDFLASHVDDMVSSRFVSSPAVSSAVSSD VSUBPOR(Power-OnReset)NRESETB rown-outDetectionTo Power ManagementCryptoCell-312 SWDIOT rustZone/TRNGSWCLKC lock Management32kHz XTAL(XTAL32K )XTAL48M_INXTAL48M_OUTXTAL32K_INXTAL32K_ OUTRCCLKRC OscillatorRC32RC OscillatorTo ArmCortex-M334x Timer (24-bit)RAM (64kB)8kB8kB8kB8kB8kB8kB8kB8kBMemory ManagementROMF unctionsVDDOSPI/QSPI(2x)I2C(2x)GPIOGPIOU ARTC lock DetectACOMP12-bit PWM(5x)8-bitACS-PWMULP DataAcquisitionPulse CounterAccumulatorThresholdVBATDAC48 MHz XTAL(RFCLK)

10 PCMFIFODMA ControllerArm Cortex M33 ProcessorThe Cortex M33 32 bit Armv8 M processor is designedfor IoT and deeply embedded applications that require highperformance, power efficiency and security. The processorhas many features to execute high performance applicationssuch a Floating Point Unit (FPU), DSP extensions andMemory Protection Unit (MPU). Secure debug is donethrough the dedicated Serial Wire Debug Port (SW DP) ControllerThe Direct Memory Access (DMA) Controller allowsbackground transfers between peripherals and memorieswithout processor intervention. The processor can be in alow power state or used for other computational tasks whilethe transfer occurs. The DMA is connected to the processor,peripherals and RAM memories and has 4 PlatformThe Cortex M33 processor with TrustZone Armv8 Msecurity extensions forms the basis of the security platformthat is extended with Arm CryptoCell Boot with Root of TrustThe secure boot ROM authenticates firmware in flashwith a certificate based mechanism using a private publickey scheme.