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EFM32 Pearl Gecko Family
EFM32PG1 Reference Manual
The EFM32 Pearl Gecko MCUs are the world’s most energy-
friendly microcontrollers.
EFM32PG1 features a powerful 32-bit ARM
®
Cortex-M4 and a wide selection of periph-
erals, including a unique cryptographic hardware engine supporting AES, ECC, and
SHA. These features, combined with ultra-low current active mode and short wake-up
time from energy-saving modes, make EFM32PG1 microcontrollers well suited for any
battery-powered application, as well as other systems requiring high performance and
low-energy consumption.
Example applications:
ENERGY FRIENDLY FEATURES
• ARM Cortex-M4 at 40 MHz
• Ultra low energy operation:
• 2.1 μA EM3 Stop current (CRYOTIMER
running with state/RAM retention)
• 2.5 μA EM2 DeepSleep current (RTCC
running with state and RAM retention)
• 63 μA/MHz in Energy Mode 0 (EM0)
• Hardware cryptographic engine supports
AES, ECC, and SHA
• Integrated dc-dc converter
• CRYOTIMER operates down to EM4
• 5 V tolerant I/O
• IoT devices and sensors
• Health and fitness
• Smart accessories
• Home automation and security
• Industrial and factory automation
Peripheral Reflex System
32-bit bus
Core / Memory
ARM Cortex
TM
M4 processor
with DSP extensions and FPU
Timers and Triggers
CRYOTIMER
Real Time Counter
and Calendar
Timer/Counter Low Energy Timer
Pulse Counter
Watchdog Timer
Lowest power mode with peripheral operational:
EM3 - Stop
EM2 – Deep Sleep
EM1 - Sleep
EM4 - Hibernate
EM4 - Shutoff
EM0 - Active
Analog Interfaces
ADC
IDAC
Analog Comparator
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
Serial Interfaces
USART
Low Energy UART
TM
I
2
C
I/O Ports
External Interrupts
General Purpose I/O
Pin Reset
Pin Wakeup
Memory
Protection Unit
silabs.com | Smart. Connected. Energy-friendly. Preliminary Rev. 0.6
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
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