EFM32ZG108F32-QFN24T

Microcontrollers Overview

The EFM32ZG108F32-QFN24T is a 32-bit microcontroller from the Silicon Labs Zero Gecko family, built on an ARM Cortex-M0+ core. It features 32 kB of Flash memory and 4 kB of RAM, operating at a maximum clock frequency of 24 MHz with a supply voltage range of 1.98 V to 3.8 V. The device is housed in a QFN-24 package (5x5 mm) and supports an industrial temperature range of -40°C to +85°C. Key peripherals include a 12-bit ADC, hardware AES encryption, DMA controller, and multiple serial interfaces.

Microcontrollers Feature Summary

• Ultra-low power operation with energy modes including Stop mode consuming as little as 0.5 µA and Shutoff mode at 20 nA.
• Integrated hardware cryptography accelerator supporting AES encryption and decryption with 128-bit keys.
• Flexible energy management system allowing autonomous peripheral operation during low-energy sleep states.
• High-performance 32-bit ARM Cortex-M0+ processor achieving up to 0.9 Dhrystone MIPS/MHz.

Microcontrollers Applications

• Energy, gas, water, and smart metering systems
• Health and fitness wearable applications
• Smart accessories and IoT devices
• Alarm and security systems
• Industrial and home automation controllers

Microcontrollers Procurement Notes

Verify the 'T' suffix indicates tape and reel packaging configuration for automated assembly. Confirm the specific feature set code '108' matches the required peripheral availability, such as the presence or absence of ADC and IDAC modules. Ensure the QFN24 package dimensions align with the PCB footprint design guidelines provided in the datasheet.

Microcontrollers Selection Notes

Select this component for battery-powered designs requiring minimal active current consumption while maintaining 32-bit processing capabilities. The inclusion of hardware AES accelerates secure communication protocols without significant CPU overhead. Consider the available GPIO count and peripheral mix against application interface requirements before finalizing the part number.

Microcontrollers Part Context

This microcontroller belongs to the EFM32 Zero Gecko family, designed specifically for ultra-low power applications. It shares the same core architecture and energy management features as other ZG variants but differs in memory size and peripheral configuration. The QFN24 package offers a compact form factor suitable for space-constrained portable electronics.

Microcontrollers Replacement Considerations

EFM32ZG108F32-B-QFN24 is the standard tray-packaged equivalent. Other ZG series members like EFM32ZG110F32-B-QFN24 offer additional analog peripherals such as ADC and IDAC if those functions are required.

Microcontrollers FAQ

What is the current consumption in Stop mode?

The device consumes as little as 0.5 µA in Stop mode (EM3) with brown-out detection and RAM retention enabled.

Does this MCU support hardware encryption?

Yes, it includes a hardware Advanced Encryption Standard (AES) accelerator that performs 128-bit key encryption and decryption efficiently.