Silicon Labs

EFR32BG27 Bluetooth Wireless SoC

EFR32BG27
The BG27 family of Bluetooth LE and Bluetooth mesh SoCs are available with DCDC Boost in WLCSP packaging for small form factor applications, from medical devices to wearables and beyond.
EFR32BG27 Bluetooth Wireless SoC
Contents
  1. Description
  2. EFR32BG27 Common Specs
  3. Application Field
  4. Data Sheet
  The EFR32BG27 family of wireless SoCs opens up new possibilities by offering an ultra-small WLCSP package (2.3 mm x 2.6 mm) capable of running on button cell batteries. Now device makers can address applications with extremely small form-factor requirements without sacrificing performance and security. The BG27 Bluetooth SoC features an integrated DCDC boost that allows operation down to 0.8 volts, enabling support for single-cell alkaline and 1.5-volt button cell batteries that are typically used in medical applications for battery-operated patches and continuous glucose monitoring (CGM) devices. Additionally, the wakeup pin on the BG27 allows products in a warehouse or transit to remain off for months, consuming less than 20 nA, ensuring the battery remains fully charged for use. The integrated coulomb counter enables accurate battery level monitoring to avoid unexpected battery depletion for critical applications. Target applications include connected medical devices, wearables, sensors, switches, smart locks, and both commercial and LED lighting. Low Power Wireless System-on-Chip
  • High Performance 32-bit 76.8 MHz ARM Cortex®-M33 with DSP instruction and floating-point unit for efficient signal processing
  • Up to 768 kB flash program memory
  • Up to 64 kB RAM data memory
  • 2.4 GHz radio operation

Radio Performance
  • -106.7 dBm sensitivity @ 125 kbps GFSK
  • -98.9 dBm sensitivity @ 1 Mbit/s GFSK
  • -96.2 dBm sensitivity @ 2 Mbit/s GFSK
  • TX power up to 8 dBm

Low System Energy Consumption
  • 3.6 mA RX current (1 Mbps GFSK)
  • 4.1 mA TX current @ 0 dBm output power
  • 9.2 mA TX current @ 6 dBm output power
  • 11.3 mA TX current @ 8 dBm output power
  • 29 μA/MHz in Active Mode (EM0) at 76.8 MHz
  • 1.6 μA EM2 DeepSleep current (64 kB RAM retention and RTC running from LFRCO)
  • 0.18 μA EM4 current

Wide Selection of MCU Peripherals
  • 16-bit Analog to Digital Converter (IADC)
  • Analog Comparator (ACMP)
  • Up to 26 General Purpose I/O pins with output state retention and asynchronous interrupts
  • 8 Channel DMA Controller
  • 12 Channel Peripheral Reflex System (PRS)
  • 3 × 16-bit Timer/Counter with 3 Compare/Capture/PWM channels
  • 2 × 32-bit Timer/Counter with 3 Compare/Capture/PWM channels
  • 32-bit Real Time Counter
  • 24-bit Low Energy Timer for waveform generation
  • 1 × Watchdog Timer
  • 2 × Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
  • 1 × Enhanced Universal Asynchronous Receiver/Transmitter (EUART)
  • 2 × I2C interface with SMBus support
  • Digital microphone interface (PDM)
  • Precision Low-Frequency RC Oscillator to replace 32 kHz sleep crystal
  • RFSENSE with selective OOK mode
  • Die temperature sensor with +/- 1.5 °C accuracy after single-point calibration
  • Coulomb counter integrated into DC-DC

Supported Modulation Format
  • (G)FSK with fully configurable shaping
  • OQPSK DSSS
  • (G)MSK

Protocol Support
  • Bluetooth Low Energy (Bluetooth 5.3)
  • Bluetooth mesh
  • Proprietary

Wide Operation Range
  • 1.8 V to 3.8 V single power supply for devices with Buck DC-DC
  • 0.8 V to 1.7 V single power supply for devices with Boost DC-DC
  • -40 °C to 125 °C

Packages
  • QFN40 5 mm × 5 mm × 0.85 mm
  • QFN32 4 mm × 4 mm × 0.85 mm
  • WLCSP39 2.291 mm x 2.624 mm x 0.5 mm
  1. Portable Medical
  2. Home End Devices
  3. Fleet/Asset Monitoring
  4. Industrial Automation
  5. Access Control
  6. Bluetooth Mesh
  7. Sports, Fitness, and Wellness devices
  8. Power Tools
Document Name Download
EFR32BG27 Wireless Gecko SoC Family Data Short EFR32BG27 Wireless Gecko SoC Family Data Short


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