EFM32 Zero Gecko MCUs boast energy efficiency and 32-bit performance - Embedded.com

EFM32 Zero Gecko MCUs boast energy efficiency and 32-bit performance

According to Silicon Labs, the EFM32 Zero Gecko MCU family comprises the industry's most energy-friendly 32-bit microcontrollers (MCUs) based on the ARM Cortex-M0+ processor. The family includes 16 cost-effective MCU products designed from the ground up to enable the lowest possible energy consumption for connected devices enabling the Internet of Things (IoT) and for a wide range of battery-powered applications such as mobile health and fitness products, smart watches, activity trackers, smart meters, security systems and wireless sensor nodes, as well as battery-less systems powered by harvested energy.

The EFM32 Zero Gecko MCUs feature five energy modes that enable applications to remain in an energy-optimal state. In deep-sleep mode, Zero Gecko MCUs have a 0.9 A standby current consumption with a 32.768 kHz RTC, RAM/CPU state retention, brown-out detector and power-on-reset circuitry active. Active-mode power consumption scales down to 110 uA/MHz at 24 MHz with real-world code (prime number search algorithm) executed from flash. Current consumption is less than 20 nA in shut-off mode. The EFM32 MCUs further reduce power consumption with a 2-microsecond wakeup time from standby mode.


Click on image to enlarge.

According to the company, EFM32 Zero Gecko devices are the only Cortex-M0+ MCUs on the market that integrate a programmable current digital-to-analog converter (IDAC). This on-chip precision-analog IDAC generates a biasing current from 0.05-64 uA with only 10 nA overhead. The IDAC provides an accurate bias and/or control capability for companion ICs and other external circuits including amplifiers, sensors, Wheatstone bridges and resistor ladders, thereby eliminating the need for external power amplifier components for many cost-sensitive applications.

The Zero Gecko devices are also the only Cortex-M0+ MCUs containing a 128-bit Advanced Encryption Standard (AES) hardware block. With this built-in hardware AES encryption acceleration support, the Zero Gecko MCUs provide an ideal companion for RF transmitters and transceivers used in connected device applications for the Internet of Things.

More information

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.