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EFR32FG1 Flex Gecko Proprietary
Protocol SoC Family Data Sheet
The Flex Gecko proprietary protocol family of SoCs is part of the
Wireless Gecko portfolio. Flex Gecko SoCs are ideal for enabling
energy-friendly proprietary protocol networking for IoT devices.
The single-die solution provides industry-leading energy efficiency, ultra-fast wakeup
times, a scalable power amplifier, an integrated balun and no-compromise MCU fea-
tures.
Flex Gecko applications include:
KEY FEATURES
• 32-bit ARM® Cortex®-M4 core with 40
MHz maximum operating frequency
• Scalable Memory and Radio configuration
options available in several footprint
compatible QFN packages
• 12-channel Peripheral Reflex System
enabling autonomous interaction of MCU
peripherals
• Autonomous Hardware Crypto Accelerator
and Random Number Generator
• Integrated balun for 2.4 GHz and
integrated PA with up to 19.5 dBm transmit
power for 2.4 GHz and 20 dBm transmit
power for Sub-GHz radios
• Integrated DC-DC with RF noise mitigation
• Home and Building Automation and Security
• Metering
•
Electronic Shelf Labels
• Industrial Automation
• Commercial and Retail Lighting and Sensing
Timers and Triggers
Real Time
Counter and
Calendar
Cryotimer
Timer/Counter
Low Energy
Timer
Pulse Counter
Watchdog Timer
Protocol Timer
32-bit bus
Peripheral Reflex System
Serial
Interfaces
I/O Ports Analog I/F
Lowest power mode with peripheral operational:
USART
Low Energy
UART
TM
I
2
C
External
Interrupts
General
Purpose I/O
Pin Reset
Pin Wakeup
ADC
IDAC
Analog
Comparator
Radio Transceiver
DEMOD
AGC
IFADC
CRC
BUFC
RFSENSE
FRC
RAC
EM3—StopEM2—Deep SleepEM1—Sleep EM4—Hibernate EM4—ShutoffEM0—Active
Core / Memory
ARM Cortex
TM
M4 processor
with DSP extensions and FPU
Energy Management
Brown-Out
Detector
DC-DC
Converter
Voltage
Regulator
Voltage Monitor
Power-On Reset
Other
CRYPTO
CRC
Clock Management
High Frequency
Crystal
Oscillator
Low Frequency
Crystal
Oscillator
Low Frequency
RC Oscillator
High Frequency
RC Oscillator
Ultra Low
Frequency RC
Oscillator
Auxiliary High
Frequency RC
Oscillator
Flash Program
Memory
RAM Memory Debug Interface DMA Controller
Memory
Protection Unit
BALUN
2.4 GHz RF
Frontend:
LNA, PA,
I/Q Mixer
Sub-GHz RF
Frontend:
LNA, PA,
I/Q Mixer
PGA
MOD
To RF
Frontend
Circuits
Frequency
Synthesizer
silabs.com | Smart. Connected. Energy-friendly. Preliminary Rev. 0.97
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
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