Pearl Gecko microcontrollers feature a 32-bit ARM Cortex-M4 processor core. They offer a wide array of peripherals and a cryptographic hardware engine supporting AES, ECC, and SHA. With low current active mode and short wake-up times, Pearl Gecko microcontrollers are perfect for battery powered applications and other low-energy systems. Two versions are offered with different MCU specifications and different peripherals.

• EFM32PG1B200F256GM48 MCU with 256KB Flash memory, 32KB RAM (SLSTK3401A)
• EFM32PG12B500F1024GL125 MCU with 1MB Flash memory, 256KB RAM (SLSTK3402A)
• Integrated SEGGER J-Link debugger
• Advanced Energy Monitor
• USB Mini-B socket for debug and Virtual COM port
• Debug header for external debug emulator connection
• 1.28in 128 x 128pixel Memory LCD display
• 2 x Capacitive touch buttons (SLSTK3401A only)
• Capacitive touch slider (SLSTK3402A only)
• 2 x User LEDs
• 2 x User pushbuttons
• Reset pushbutton
• On-board Si7021 Relative Humidity/Temperature sensor
• On-board Inductive LC sensor for LESENSE demonstration (SLSTK3402A only)
• Coin-cell holder for CR2032 battery
• Breakout pads for access to MCU GPIO pins
• 20-pin expansion header for add-on boards
• Powered from coin-cell or USB

• 922-4814 SLSTK3401A EFM32PG1 Starter Kit
• 134-7237 SLSTK3402A EFM32PG12 Starter Kit

EFM32PG1B200F256GM48 (RS 922-4797) Pearl Gecko MCU mainboard
CR2032 coin cell battery
USB Cable
EFM32 Getting Started Card

EFM32 Gecko Microcontrollers

Silicon Labs microcontrollers target energy sensitive applications, including smart metering, gas/energy/water metering, remote sensing, building automation, security systems, portable health/fitness equipment and smart accessories.

Powerful ARM Cortex-M 32-bit processor cores
Short wake-up time from energy saving modes
Ideal for use with energy harvesting systems