Tech Talk
Design Long Range Devices for Amazon Sidewalk with FG28
Amazon Sidewalk is a shared network that extends the low-bandwidth working range of devices. Learn how to design long-range devices with Amazon Sidewalk on our new dual-band SoC, the FG28.
EFR32FG28 Common Specs
Low Power Wireless System-on-Chip
- High Performance 32-bit 78 MHz ARM Cortex®-M33 with DSP instruction and floating-point unit for efficient signal processing
- Up to 1024 kB flash program memory
- Up to 256 kB RAM data memory
- Sub-GHz radio operation with TX power up to +20 dBm
- 2.4 GHz BLE radio operation with TX power up to +10 dBm
- Matrix Vector Processor for AI/ML acceleration
Low Energy Consumption
- 4.4 mA RX current at 920 MHz (400 kbps 4-FSK)
- 4.0 mA RX current at 915 MHz (4.8 kbps O-QPSK)
- 5.4 mA RX current at 915 MHz (2 Mbps GFSK)
- 3.9 mA RX current at 868 MHz (2.4 kbps GFSK)
- 3.9 mA RX current at 868 MHz (38.4 kbps FSK)
- 4.2 mA RX current at 433 MHz (100 kbps 2GFSK)
- 5.2 mA RX current at 2.4 GHz, 1 Mbps BLE
- 25.7 mA TX current @ 14 dBm output power at 915 MHz (14 dBm part number)
- 81.8 mA TX current @ 20 dBm output power at 915 MHz with (20 dBm part number)
- 12.3 mA TX current @ 0 dBm output power, 2.4 GHz
- 23.2 mA TX current @ 10 dBm output power, 2.4 GHz
- 33 μA/MHz in Active Mode (EM0) at 39.0 MHz
- 2.8 μA EM2 DeepSleep current (256 kB RAM retention and RTC running from LFXO)
- 1.3 μA EM2 DeepSleep current (16 kB RAM retention and RTC running from LFRCO)
- Preamble Sense Mode (PSM) low duty-cycle listen
High Receiver Performance
- -98.1 dBm sensitivity @ 400 kbps 920 MHz 4-GFSK
- -124.8 dBm sensitivity @ 4.8 kbps 915 MHz O-QPSK
- -96.0 dBm sensitivity @ 2 Mbps 915 MHz GFSK
- -124.1 dBm sensitivity @ 2.4 kbps 868 MHz GFSK
- -110.4 dBm sensitivity @ 38.4 kbps 868 MHz FSK
- -110.6 dBm sensitivity @ 100 kbps 433 MHz 2GFSK
Wide Selection of MCU peripherals
- Analog to Digital Converter (ADC)
- 12-bit @ 1 Msps
- 16-bit @ 76.9 ksps
- 2 × Analog Comparator (ACMP)
- 2-Channel Digital to Analog Converter (VDAC)
- Low-Energy Sensor Interface (LESENSE)
- Up to 49 General Purpose I/O pins with output state retention and asynchronous interrupts
- 8 Channel DMA Controller
- 12 Channel Peripheral Reflex System (PRS)
- 4 × 16-bit Timer/Counter with 3 Compare/Capture/PWM channels
- 1 × 32-bit Timer/Counter with 3 Compare/Capture/PWM channels
- 32-bit Real Time Counter
- 24-bit Low Energy Timer for waveform generation
- 16-bit Pulse Counter with asynchronous operation (PCNT) Newer Addition
- 2 × Watchdog Timer
- 3 × Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART)
- 1 x Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
- 2 x I2C interface with SMBus support
- Integrated Low-Energy LCD Controller supporting up to 192 segments
- Keypad scanner supporting up to 6 x 8 matrix (KEYSCAN)
- Die temperature sensor with ± 2 °C accuracy across temperature range
Supported Modulation Format
- 2/4 (G)FSK with fully configurable shaping
- OQPSK with DSSS
- (G)MSK
- OOK
Protocol Support
- Proprietary
- CONNECT
- Amazon Sidewalk
- WM-BUS
- Wi-SUN
- Bluetooth Low Energy
Wide Operating Range
- 1.71 to 3.8 V single power supply
- -40 °C to +125 °C
Packages
- QFN68 8 mm x 8 mm x 0.85 mm
- QFN48 6 mm x 6 mm x 0.85 mm
Secure Vault
- Hardware Cryptographic Acceleration for AES128/192/256, ChaCha20-Poly1305, SHA-1, SHA-2/256/384/512, ECDSA, +ECDH (P-192, P-256, P-384, P-521), Ed25519 and Curve25519, J-PAKE, PBKDF2
- True Random Number Generator (TRNG)
- ARM® TrustZone®
- Secure Boot with Root of Trust and Secure Loader (RTSL)
- Secure Debug Unlock
- DPA Countermeasures
- Secure Key Management with PUF
- Anti-Tamper
- Secure Attestation
Find the Right EFR32FG28 Device
Select Columns
| Part Number | Pricing | Integrated MCU | MCU Core | Flash (kB) | RAM (kB) | Communications | Sub-GHz TX Power | RX Current (mA) | Peak RX Sensitivity | Proprietary 2.4 GHz | Proprietary Sub-GHz | Security | GPIO | DAC | Temp Sensor | Timers (16-bit) | Temperature Range ºC | Package Type | Package Size (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1K @ US$3.73 | ARM Cortex-M33 | 1024 | 128 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 31 | VDAC | 4 | -40 85 | QFN48 | 6x6 | |||||
| 1K @ US$3.96 | ARM Cortex-M33 | 1024 | 128 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 49 | VDAC | 4 | -40 85 | QFN68 | 8x8 | |||||
| 1K @ US$4.31 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 31 | VDAC | 4 | -40 85 | QFN48 | 6x6 | |||||
| 1K @ US$4.54 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 49 | VDAC | 4 | -40 85 | QFN68 | 8x8 | |||||
| 1K @ US$4.78 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 31 | VDAC | 4 | -40 85 | QFN48 | 6x6 | |||||
| 1K @ US$5.01 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 49 | VDAC | 4 | -40 85 | QFN68 | 8x8 | |||||
| 1K @ US$4.5 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 20 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 31 | VDAC | 4 | -40 85 | QFN48 | 6x6 | |||||
| 1K @ US$4.73 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 20 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 49 | VDAC | 4 | -40 85 | QFN68 | 8x8 | |||||
| 1K @ US$4.98 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 20 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 31 | VDAC | 4 | -40 85 | QFN48 | 6x6 | |||||
| 1K @ US$5.21 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI -15 x USART | 20 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 49 | VDAC | 4 | -40 85 | QFN68 | 8x8 | |||||
| 1K @ US$4.66 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 31 | VDAC | 4 | -40 125 | QFN48 | 6x6 | |||||
| 1K @ US$4.89 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 31 | VDAC | 4 | -40 125 | QFN48 | 6x6 | |||||
| 1K @ US$5.14 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 49 | VDAC | 4 | -40 125 | QFN68 | 8x8 | |||||
| 1K @ US$5.37 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 14 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 49 | VDAC | 4 | -40 125 | QFN68 | 8x8 | |||||
| 1K @ US$4.86 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 20 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 31 | VDAC | 4 | -40 125 | QFN48 | 6x6 | |||||
| 1K @ US$5.08 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 20 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 49 | VDAC | 4 | -40 125 | QFN68 | 8x8 | |||||
| 1K @ US$5.34 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 20 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 31 | VDAC | 4 | -40 125 | QFN48 | 6x6 | |||||
| 1K @ US$5.57 | ARM Cortex-M33 | 1024 | 256 | 2 x I²C 5 x SPI 5 x USART | 20 | 4.0 | -124.8 (4.8 kbps OQPSK @ 915 MHz) | AES-128 AES-256 ECC SHA-1 SHA-2 | 49 | VDAC | 4 | -40 125 | QFN68 | 8x8 |
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EFR32xG28 Pro Kit +20 dBm
The EFR32xG28 +20 dBm Pro Kit is designed to support the development of Wireless IoT devices based on Sub-GHz and 2.4 GHz protocols like Wi-SUN, Amazon Sidewalk, Wireless M-BUS, Silicon Labs CONNECT, Proprietary protocols, and Bluetooth Low Energy.
EFR32xG28 Pro Kit +20 dBm
The EFR32xG28 +20 dBm Pro Kit is designed to support the development of Wireless IoT devices based on Sub-GHz and 2.4 GHz protocols like Wi-SUN, Amazon Sidewalk, Wireless M-BUS, Silicon Labs CONNECT, Proprietary protocols, and Bluetooth Low Energy.
EFR32xG28 2.4 GHz BLE and +14 dBm Radio Board
The EFR32xG28 2.4 GHz BLE and +14 dBm Radio Board is designed work with the STK main board to support the development of Wireless IoT devices based on Sub-GHz and 2.4 GHz BLE wireless protocols for Proprietary, Connect, Z-Wave, Wi-SUN and Bluetooth Low Energy.
EFR32xG28 2.4 GHz BLE and +14 dBm Radio Board
The EFR32xG28 2.4 GHz BLE and +14 dBm Radio Board is designed work with the STK main board to support the development of Wireless IoT devices based on Sub-GHz and 2.4 GHz BLE wireless protocols for Proprietary, Connect, Z-Wave, Wi-SUN and Bluetooth Low Energy.
EFR32xG28 2.4 GHz BLE and +20 dBm Radio Board
The EFR32xG28 2.4 GHz BLE and +20 dBm Radio Board is designed work with the STK main board to support the development of Wireless IoT devices based on Sub-GHz and 2.4 GHz BLE wireless protocols for Proprietary, Connect, Z-wave, Wi-SUN and Bluetooth Low Energy.
EFR32xG28 2.4 GHz BLE and +20 dBm Radio Board
The EFR32xG28 2.4 GHz BLE and +20 dBm Radio Board is designed work with the STK main board to support the development of Wireless IoT devices based on Sub-GHz and 2.4 GHz BLE wireless protocols for Proprietary, Connect, Z-wave, Wi-SUN and Bluetooth Low Energy.
EFR32xG28 Pro Kit +14 dBm
The EFR32xG28 Pro Kit is designed to support the development of Wireless IoT devices based on Sub-GHz and 2.4 GHz protocols like Wi-SUN, Amazon Sidewalk, Wireless M-BUS, Silicon Labs CONNECT, Proprietary protocols, and Bluetooth Low Energy.
EFR32xG28 Pro Kit +14 dBm
The EFR32xG28 Pro Kit is designed to support the development of Wireless IoT devices based on Sub-GHz and 2.4 GHz protocols like Wi-SUN, Amazon Sidewalk, Wireless M-BUS, Silicon Labs CONNECT, Proprietary protocols, and Bluetooth Low Energy.
EFR32xG28 Explorer Kit
The EFR32xG28 Explorer Kit is a small form factor development and evaluation platform based on the EFR32xG28 System-on-Chip. The EFR32xG28 Explorer Kit is focused on rapid prototyping and concept creation of IoT applications for Sub-GHz and Bluetooth LE like Wi-SUN, Amazon Sidewalk, Wireless M-Bus, and proprietary networks.
EFR32xG28 Explorer Kit
The EFR32xG28 Explorer Kit is a small form factor development and evaluation platform based on the EFR32xG28 System-on-Chip. The EFR32xG28 Explorer Kit is focused on rapid prototyping and concept creation of IoT applications for Sub-GHz and Bluetooth LE like Wi-SUN, Amazon Sidewalk, Wireless M-Bus, and proprietary networks.
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