EFR32BG21 Common Specs
Bluetooth Low Energy Radio
- Compatible with Bluetooth 5.4 and Bluetooth mesh specification
- Excellent receive sensitivity:
- 104.9 dBm @125 kbps GFSK
- -97.5 dBm @1 Mbps GFSK
- -94.4 dBm @2 Mbps GFSK
- 104.9 dBm @125 kbps GFSK
- Programmable output power: Up to +20 dBm
- Active mode RX: 8.8 mA
- Active mode TX: 9.3 mA @ 0 dBm
- Active mode TX: 33.8 mA @ 10 dBm
Rich Analog and Digital Peripherals
- 12-bit 1 Msps SAR Analog to Digital Converter (ADC)
- Analog Comparators (ACMP)
- 8 Channel DMA Controller
- Peripheral Reflex System (PRS)
- PTA (Packet Traffic Arbitration) for Wi-Fi Coexistence
- 16-bit Timer/Counters
- 3 Compare/Capture/PWM channels per Timer
- 32-bit Timer/Counter
- 3 Compare/Capture/PWM channels per Timer
- 24-bit Low Energy Timer for waveform generation
- Watchdog Timers
- Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard(ISO 7816)/IrDA/I2S)
- I2C interface with SMBus support
- Up to 20 General Purpose I/O pins
- Output state retention and asynchronous interrupts
Powerful MCU & Memory Options
- ARM® Cortex®-M33
- Floating-Point Unit
- Up to 80 MHz Clock Speed
- Low Active Mode Current: 50.9 µA/MHz
- Up to 1024 kB of Programmable Flash
- Up to 96 kB SRAM
Package Options
- QFN32 (4 mm x 4 mm)
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| Part Number | Pricing | MCU Core | Core Frequency (MHz) | Flash | RAM | Bluetooth 5.1 | Bluetooth 5 | Bluetooth Mesh | Secure Vault | Cryptography | Output Power Range (dBm) | Receive Sensitivity | GPIO | RX Current (mA) | UART | USART | I²C | SPI | I²S | ADC | Comparators | Timers (16-bit) | Temperature Range ºC | Package Type | Package Size (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1K @ US$2.95 | ARM Cortex-M33 | 80 | 1024 | 96 | Yes | AES-128 AES-256 ECC SHA-1 SHA-2 | -20 10.5 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 0 | 3 | 2 | 0 | 3 | 12-bit, SAR, 1 Msps | 2 | 2 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$2.12 | ARM Cortex-M33 | 80 | 512 | 64 | Yes | AES-128 AES-256 ECC SHA-1 SHA-2 | -20 10.5 | -97 (1 Mbit/s GFSK) | 17 | 8.7 | 0 | 3 | 2 | 0 | 3 | 12-bit, SAR, 1 Msps | 2 | 2 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$2.44 | ARM Cortex-M33 | 80 | 768 | 64 | Yes | AES-128 AES-256 ECC SHA-1 SHA-2 | -20 10.5 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 0 | 3 | 2 | 0 | 3 | 12-bit, SAR, 1 Msps | 2 | 2 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$3.49 | ARM Cortex-M33 | 80 | 1024 | 96 | Yes | AES-128 AES-256 ECC SHA-1 SHA-2 | -20 20 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 0 | 3 | 2 | 0 | 3 | 12-bit, SAR, 1 Msps | 2 | 2 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$2.67 | ARM Cortex-M33 | 80 | 512 | 64 | Yes | AES-128 AES-256 ECC SHA-1 SHA-2 | -20 20 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 0 | 3 | 2 | 0 | 3 | 12-bit, SAR, 1 Msps | 2 | 2 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$2.99 | ARM Cortex-M33 | 80 | 768 | 64 | Yes | AES-128 AES-256 ECC SHA-1 SHA-2 | -20 20 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 0 | 3 | 2 | 0 | 3 | 12-bit, SAR, 1 Msps | 2 | 2 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$2.63 | ARM Cortex-M33 | 80 | 1024 | 96 | — | AES-256 ECC SHA-1 SHA-2 | -20 10 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 3 | 3 | 2 | 3 | 3 | 12-bit, SAR, 1 Msps | 2 | 7 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$1.8 | ARM Cortex-M33 | 80 | 512 | 64 | — | AES-256 ECC SHA-1 SHA-2 | -20 10 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 3 | 3 | 2 | 3 | 3 | 12-bit, SAR, 1 Msps | 2 | 7 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$2.12 | ARM Cortex-M33 | 80 | 768 | 64 | — | AES-256 ECC SHA-1 SHA-2 | -20 10 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 3 | 3 | 2 | 3 | 3 | 12-bit, SAR, 1 Msps | 2 | 7 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$3.19 | ARM Cortex-M33 | 80 | 1024 | 96 | — | AES-256 ECC SHA-1 SHA-2 | -20 20 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 3 | 3 | 2 | 3 | 2 | 12-bit, SAR, 1 Msps | 2 | 7 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$2.36 | ARM Cortex-M33 | 80 | 512 | 64 | — | AES-256 ECC SHA-1 SHA-2 | -20 20 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 3 | 3 | 2 | 3 | 3 | 12-bit, SAR, 1 Msps | 2 | 7 | -40 125 | QFN32 | 4x4 | ||||
| 1K @ US$2.67 | ARM Cortex-M33 | 80 | 768 | 64 | — | AES-256 ECC SHA-1 SHA-2 | -20 20 | -97 (1 Mbit/s GFSK) | 20 | 8.7 | 3 | 3 | 2 | 3 | 3 | 12-bit, SAR, 1 Msps | 2 | 7 | -40 125 | QFN32 | 4x4 |
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EFR32xG21 Wireless Gecko Starter Kit
The EFR32xG21 Wireless Gecko Starter Kit (SLWSTK6006A) includes everything needed to enable developers to create a mesh network and evaluate the EFR32xG21A with Secure Element and the EFR32xG21B with Secure Vault Series 2 Wireless Gecko SoCs. This kit provides the common baseboard and comes with 6 xG21A modules (SLWRB418xA). If you want to evaluate the EFR32xG21B you must buy the xG21B modules (SLWRB4181C +10 dBm) separately.
EFR32xG21 Wireless Gecko Starter Kit
The EFR32xG21 Wireless Gecko Starter Kit (SLWSTK6006A) includes everything needed to enable developers to create a mesh network and evaluate the EFR32xG21A with Secure Element and the EFR32xG21B with Secure Vault Series 2 Wireless Gecko SoCs. This kit provides the common baseboard and comes with 6 xG21A modules (SLWRB418xA). If you want to evaluate the EFR32xG21B you must buy the xG21B modules (SLWRB4181C +10 dBm) separately.