EFR32BG21
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EFR32 Blue Gecko
Silicon Labs' long-range BLE 5.2 SoC with excellent RX sensitivity.
Full Specifications
Processor
| Core | ARM Cortex-M33 |
| Clock Speed | 80 MHz |
| Cores | 1 |
| Features |
|
Memory
| Flash | 1024 KB |
| RAM | 96 KB |
| External Flash | Non |
Radio
| TX Power (max) | 20 dBm |
| RX Sensitivity | -105 dBm |
| PHY Support |
1M
2M
Coded
|
| Advanced Features |
Direction Finding
Mesh
|
Multi-Protocol
| Bluetooth Classic | Non |
| Zigbee | Non |
| Thread | Non |
| Matter | Non |
| Wi-Fi | Non |
| NFC | Non |
Power
| Sleep Current | 1,5 µA |
| DC-DC Converter | Non |
Security
| Hardware Crypto | Non |
| Secure Boot | Non |
| Root of Trust | Non |
| ARM CryptoCell | Non |
Package
Commercial
| Typical Price | $2,50 |
Frequently Asked Questions
Consider your requirements for power consumption, processing power, memory, radio range, multi-protocol support, and price. Use our chip selector tool to filter and compare chips based on your specific needs.
The BLE version indicates feature support. BLE 5.0 added 2x speed and 4x range. BLE 5.1 added direction finding. BLE 5.2 added LE Audio. BLE 5.3-5.4 refined these features. BLE 6.0 added channel sounding for centimeter-level ranging.