Use Sensors in Sleep Mode
Meet the low power budgets of even the most demanding 32-bit MCU-based embedded systems with the low energy sensor interface (LESENSE) in EFM32 MCUs from Silicon Labs. Control up to 16 external analog sensors without involving the Cortex CPU. LESENSE works in the 900 nA deep sleep mode and enables autonomous monitoring of resistive, inductive and capacitive sensors to implement use cases including monitoring of a capacitive touch panel, or keeping track of a rotating object.
Flexible Digital and Analog Pin Placement
Use Silicon Labs’ patented technology and a drag-and-drop configuration tool to simplify PCB layout by easily choosing and updating analog and digital peripherals and pin locations.
Integrate Energy-Efficient Peripherals
Increase the battery life of your design with EFM32 MCUs by using peripherals designed for low energy operation. The integrated peripherals include a low energy UART that provides full communication at 32 kHz while consuming only 100 nA, and an LCD controller that can drive 4x40 segments at only 0.55 µA.
Deliver Capacitive Touch Experiences
Both EFM8 and EFM32 microcontrollers include state-of-the-art capacitive touch sensors on-chip. Select devices such as the EFM8SB1 support 20+ years of CR2032 coin cell based operation in wake-on-touch mode. With current consumption starting under 1 uA to implement wake-on-touch functionality Silicon Labs’ MCUs provide energy-friendly solutions to incorporate capacitive touch into designs.
Directly Connect Peripherals
The peripheral reflex system in the EFM32 microcontrollers makes it possible to directly connect one peripheral to another peripheral without involving the CPU. With this system a peripheral can produce signals which other peripherals can consume and instantly react to while the CPU remains asleep.