EFR32xG23 Wireless SoC
Reference Manual
The EFR32xG23 Wireless SoCs include the EFR32FG23 and EFR32ZG23 Wireless
SoC device families. The EFR32xG23 SoC is an ideal solution for sub-GHz “Internet of
Things” for smart home, security, lighting, building automation, and metering. The high-
performance sub-GHz radio provides long range and is not susceptible to 2.4 GHz inter-
ference from technologies like Wi-Fi.
The single die, multi-core solution, provides industry leading security, low power con-
sumption with fast wakeup times, and an integrated power amplifier, to enable the next
level of secure connectivity for IoT devices.
KEY FEATURES
• 32-bit ARM® Cortex M33 core with 78
MHz maximum operating frequency
• Up to 512 kB of flash and 64 kB of RAM
• Energy-efficient radio core with low active
and sleep currents
• Integrated PA with up to 20 dBm transmit
power
• Robust peripheral set and up to 31 GPIO
Timers and Triggers
32-bit bus
Peripheral Reflex System
Serial
Interfaces
I/O Ports
Analog I/F
Lowest power mode with peripheral operational:
USART
EUSART
External
Interrupts
General
Purpose I/O
Pin Reset
Pin Wakeup
IADC
EM4—Shutoff
Energy Management
Brown-Out
Detector
Voltage
Regulator
Power-On
Reset
SecurityClock Management
HF Crystal
Oscillator
LF Crystal
Oscillator
LF
RC Oscillator
HF
RC Oscillator
Ultra LF RC
Oscillator
Core / Memory
ARM Cortex
TM
M33 processor
with DSP extensions,
FPU and TrustZone
ETM Debug Interface RAM Memory
LDMA
Controller
Flash Program Memory
System Real Time
Counter
Timer/Counter
Low Energy Timer
Watchdog Timer
Protocol Timer
EM3—StopEM2—Deep SleepEM1—SleepEM0—Active
Fast Startup
RC Oscillator
Back-Up Real
Time Counter
I
2
C
EUSART
DC-DC
Converter
VDAC
Radio Subsystem
RX/TX Frontend with
Integrated +14 or 20 dBm PA
Frequency Synthesizer
ARM Cortex
TM
M0+ Radio
Controller
CRC
BUFC RAM
FRC
DEMOD
AGC
IFADC
MOD
Secure Debug
Authentication
Crypto Acceleration
Secure Engine
True Random
Number Generator
DPA
Countermeasures
Temperature
Sensor
ACMP
LCD
LESENSE Pulse Counter
Keypad Scanner
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