EFM32HG310F32N-C-QFN32

Microcontrollers Overview

The EFM32HG310F32N-C-QFN32 is a 32-bit ARM Cortex-M0+ microcontroller from the Happy Gecko family, operating at a maximum clock frequency of 25 MHz. It features 32 kB of Flash program memory and 8 kB of RAM. The device supports a supply voltage range of 1.98 V to 3.8 V and operates within an industrial temperature range of -40°C to +105°C. Key peripherals include a 12-bit ADC, Low Energy USB, I2C, SPI, UART, and hardware AES encryption. It is housed in a QFN-32 package.

Microcontrollers Feature Summary

• Ultra-low power operation with autonomous peripherals via Peripheral Reflex System
• Integrated Low Energy USB Device with crystal-free operation capability
• Hardware AES security accelerator for data protection
• Pre-programmed USB/UART bootloader for simplified programming

Microcontrollers Applications

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

Microcontrollers Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors or certified partners. Confirm the specific suffix 'N' indicates the extended temperature grade (-40 to +105 °C) and 'C' denotes the package revision. Check current lifecycle status as some variants may be End-of-Life. Ensure compatibility with existing PCB footprints for the QFN-32 package before procurement.

Microcontrollers Selection Notes

Select this variant when an industrial temperature range up to +105°C is required, distinguishing it from the '-G' grade limited to +85°C. The 32 kB Flash configuration suits applications with moderate code size requirements. Verify that the QFN-32 package dimensions align with board space constraints. Consider the integrated Low Energy USB if direct connectivity without external transceivers is necessary.

Microcontrollers Part Context

This component belongs to the EFM32HG (Happy Gecko) series, designed for energy-friendly embedded applications. It utilizes the ARM Cortex-M0+ core to balance performance with low power consumption. The family emphasizes ultra-low current modes and peripheral autonomy to extend battery life in portable and remote sensing devices.

Microcontrollers Replacement Considerations

EFM32HG310F32G-C-QFN32: Identical electrical specifications but limited to commercial temperature range (-40 to +85 °C).

Microcontrollers FAQ

What does the 'N' suffix indicate in the part number?

The 'N' suffix specifies the industrial temperature grade, supporting operation from -40°C to +105°C.

Does this MCU support crystal-less USB operation?

Yes, the integrated Low Energy USB peripheral includes a dedicated oscillator and clock recovery mechanism for crystal-free operation.