Silicon Labs' EFR32™ Flex Gecko wireless SoCs combine an energy-friendly MCU with a highly integrated radio supporting sub-GHz and 2.4 GHz proprietary wireless protocols. The single-die solution provides industry-leading energy efficiency, ultra-fast wake-up times, a scalable power amplifier, and an integrated balun.

These SoCs are ideal for proprietary modulation schemes including OOK, shaped FSK, shaped OQPSK, DSSS modulation techniques, and FEC. The devices are supported with SDKs including an intuitive radio abstraction interface layer (RAIL) and a connect stack to accelerate proprietary protocol development. The Flex Gecko is footprint-compatible with the Mighty Gecko and Blue Gecko, providing a migration path to multi-protocol applications that require the addition of BLE, Zigbee®, or Thread.

These dual-band wireless starter kits include a complete hardware evaluation platform including Flex Gecko dual-band radio boards, an onboard J-link debugger, an advanced energy monitor for real-time current and voltage monitoring, and access to the packet trace interface (PIT).

EFR32 Flex Gecko SoCs Features

• 2.4 GHz radio
  • Integrated 2.4 GHz balun and power amplifier
  • Excellent receive sensitivity
    • -103.3 dBm at 125 kbps, GFSK
    • -103.3 dBm at 250 kbps, DSSS-OQPSK
  • Programmable output power: +19.5 dBm
• Sub-GHz radio
  • Ideal for proprietary protocols, wireless M-BUS, low power wider area network applications
  • Supported modulations: 2/4 (G)FSK, OQPSK/(G)MSK, OOK/ASK, BPSK/DBPSK
  • Optional DSSS modulation technique and FEC channel coding
• Rich analog and digital peripherals
• Energy efficient low power modes
• Powerful MCU and memory options
  • Arm® Cortex®-M4 plus floating point unit
  • Up to 40 MHz clock speed
• Package options: QFN48 (7 mm x 7 mm), QFN32 (5 mm x 5 mm), QFN68 (8 mm x 8 mm), and BGA125 (7 mm x 7 mm)

EFR32 Flex Gecko Development Kit Features

• Included device: EFR32FG14P233F256GM48
• Modular design supports different radio boards
• Expansion header allows easy expansion
• Integrated debug and packet trace
• Packet trace supports both Ethernet and USB connections
• Coin cell holder and AA battery holder
• Supports advanced energy monitor (AEM) for battery measurement and energy profiler

Applications

• Long range machine-to-machine communication links (M2M)
• Smart meters
• Electronic shelf labels
• Home automation: security systems, lighting controls, occupancy sensors, personal medical emergency devices
• Agricultural applications
• Asset tracking (pets, fleets, and others)