EFM32ZG108F32-QFN24 - 24MHz Cortex-M0+ MCU | Silicon Labs
MPN: EFM32ZG108F32-QFN24 ✗ End of LifeEFM32ZG108F32-QFN24 Overview
A microcontroller is an embedded processing system that integrates a CPU core, nonvolatile program memory, working RAM, peripherals, and I/O on one semiconductor device. The EFM32ZG108F32-QFN24 is a 32-bit ARM Cortex-M0+ MCU, with Cortex-M0+ belonging to the ARM microcontroller processor hierarchy. Within the EFM32 product family, Zero Gecko devices are intended for compact, low-power embedded control, sensor, metering, and connected-product designs where code density, peripheral integration, and energy efficiency are important.
The main verified specifications include a 24 MHz maximum CPU speed, 32 KB Flash organized as 32K × 8, 4 KB RAM, 17 digital I/O pins, and two 16-bit timers. The manufacturer describes the platform as including low-energy techniques, fast wake-up times, and energy-saving modes. These characteristics make the device suitable for embedded systems that spend substantial time between active processing intervals while retaining a conventional 32-bit Cortex-M0+ software ecosystem.
The Zero Gecko architecture integrates configurable peripheral I/O locations and provides dedicated timing and energy-management resources for event-driven designs. This allows firmware to use interrupts and low-power states instead of continuously polling inputs. The 24 MHz Cortex-M0+ core supplies adequate control bandwidth for sensor acquisition, communication protocol handling, state-machine logic, and local supervisory functions without requiring a higher-performance MCU class.
Typical uses include battery-operated sensors, smart-metering equipment, energy, gas, and water monitoring, industrial sensing, portable medical accessories, and compact connected products. In each case, the device can coordinate low-power sampling, local control, and communications while limiting the energy consumed between events. The 24-QFN 5 mm × 5 mm package also supports space-constrained board layouts when careful exposed-pad thermal design is used.
The main design consideration is low-power behavior. Firmware, peripheral routing, wake-up sources, and the sleep state should be selected together rather than treating low current as an isolated datasheet value. Board-level leakage, sensor standby current, and wake-up latency can materially change the system duty cycle, so the complete power budget should be evaluated under realistic operating conditions.
This product data consolidates verified manufacturer and distributor specifications, documents unavailable electrical and pin-level details without guessing, and separates known drop-in alternatives from package-only lookalikes. That distinction helps engineers compare genuine device options while avoiding false substitution claims based only on a shared 24-QFN footprint.
Drop-in alternatives for EFM32ZG108F32-QFN24 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
EFM32ZG108F32-B-QFN24
✅ Drop-In📋 Reference alternative (not in catalog)
EFM32ZG108F32-B-QFN24R
✅ Drop-In📋 Reference alternative (not in catalog)
EFM32ZG108F32-QFN24 Maximum Ratings & Electrical Characteristics
| Product Type | 32-bit ARM Cortex-M0+ microcontroller (MCU) |
| Product Family | EFM32 Zero Gecko |
| CPU Core | ARM Cortex-M0+ |
| Maximum CPU Frequency | 24 MHz |
| Flash Memory | 32 KB (32K × 8) |
| RAM | 4 KB |
| Digital I/O Pins | 17 |
| Timers | 2 × 16-bit |
| Package | 24-QFN (5 mm × 5 mm) |
| Mounting Type | Surface mount |
| AES Capability | AES MCU |
| Low-Power Features | Low-energy techniques, fast wake-up times, and energy-saving modes |
| Configurable Peripheral I/O | Supported |
EFM32ZG108F32-QFN24 24-qfn (5 mm × 5 mm) Pin Configuration Guide
Pin configuration for EFM32ZG108F32-QFN24 (24-qfn (5 mm × 5 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for EFM32ZG108F32-QFN24.
Refer to the datasheet for full pin configuration.
Typical Applications
EFM32ZG108F32-QFN24 is suitable for 6 applications: Battery-Powered Environmental Sensors, Smart Water and Gas Metering, Industrial Sensor Nodes, Portable Medical and Wellness Devices, Low-Power Connected Products, Compact Control and HMI Modules.
Battery-Powered Environmental Sensors
The EFM32ZG108F32-QFN24 fits environmental sensing products that sample temperature, humidity, gas, or water-quality parameters and then sleep between measurements. Its 24 MHz ARM Cortex-M0+ core can process readings, apply filtering, and update local state while the manufacturer-described low-energy techniques and energy-saving modes support a duty-cycled operating model. The 4 KB RAM and 32 KB Flash provide room for compact firmware and bounded data buffers. The practical benefit is lower always-on energy use when the MCU wakes only for scheduled conversions or communication events. Final battery-life calculations should include sensor standby current, board leakage, and the required sampling interval because the verified excerpts do not provide a complete current-consumption table.
Recommended
Smart Water and Gas Metering
The EFM32ZG108F32-QFN24 is applicable to smart water and gas meters that accumulate measurements, detect operating events, and communicate through a low-duty-cycle interface. The 32-bit Cortex-M0+ processor at up to 24 MHz provides sufficient control bandwidth for measurement sequencing, data integrity checks, and protocol handling, while 4 KB of RAM supports short-term buffering. Fast wake-up behavior can shorten the interval between a sensor event and useful processing. Its 24-QFN 5 mm × 5 mm package also helps satisfy compact meter-board requirements. The verified excerpts identify energy, gas, water, and smart metering as relevant application areas but do not specify a particular radio or metering transceiver, so interface selection remains a separate design decision.
Recommended
Industrial Sensor Nodes
The EFM32ZG108F32-QFN24 suits compact industrial sensor nodes that monitor equipment state and transmit limited data over a wired or wireless link. Its 17 digital I/O pins support discrete inputs, interrupt-capable sensing, and actuator-control signaling, while two 16-bit timers provide timing resources for periodic sampling and protocol handling. The 24 MHz Cortex-M0+ core is appropriate for event-driven supervisory logic without the overhead of a larger MCU. Configurable peripheral I/O locations can simplify board routing when functions are assigned according to the final pin plan. Because the supplied excerpts do not confirm industrial temperature ratings, analog specifications, or EMC performance, those requirements should be checked against the manufacturer datasheet before deployment in a harsh environment.
Recommended
Portable Medical and Wellness Devices
The EFM32ZG108F32-QFN24 can serve as the control MCU in portable medical or wellness accessories that combine sensing, local user interaction, and encrypted data handling. The verified Mouser listing identifies the device as an AES MCU, while its 24 MHz Cortex-M0+ core is sufficient for control loops, status tracking, and protocol processing. Low-energy operation and fast wake-up are valuable when the product spends most of its time idle between user interactions or measurements. The 24-QFN 5 mm × 5 mm package supports compact assemblies. However, the supplied information does not establish medical-device qualification, specific safety requirements, analog accuracy, or battery-current limits, so this application should proceed only after regulatory and electrical validation.
Recommended
Low-Power Connected Products
The EFM32ZG108F32-QFN24 is well matched to connected products that need reliable local control but should not run the processor continuously. Its 32 KB Flash accommodates a compact protocol stack and application firmware, while 4 KB RAM supports transient packet buffers and state handling. The low-power platform can let firmware remain in an energy-saving state between network activities and respond through the manufacturer-described fast wake-up behavior. The 17 digital I/O pins and two 16-bit timers are useful for indicators, sensors, and periodic tasks. A communications companion must be selected separately because no specific radio transceiver is verified in the supplied results. The final design should compare standby current, wake-up latency, and radio idle consumption as one complete power budget.
Recommended
Compact Control and HMI Modules
The EFM32ZG108F32-QFN24 can be used in compact control modules that coordinate switches, indicators, keypads, and status interfaces. Its 17 digital I/O pins provide a practical interface budget for user controls and discrete signals, and its two 16-bit timers support timing-intensive tasks such as debouncing, periodic updates, or output generation. At up to 24 MHz, the Cortex-M0+ core handles embedded control logic, diagnostics, and non-graphical interface updates. The compact 5 mm × 5 mm QFN package allows a small controller footprint, although the exposed thermal pad must be connected and laid out according to the manufacturer’s package guidance. Display and communication ICs are not verified in the supplied data, so they are not presented as mandatory companions.
Recommended
Recommended Products Summary
Engineering reference data for EFM32ZG108F32-QFN24 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EFM32ZG108F32-B-QFN24 | EFM32ZG108F32-B-QFN24R |
|---|---|---|---|
| Package | 24-QFN (5 mm × 5 mm) | 24-QFN (5 mm × 5 mm) - same | 24-QFN (5 mm × 5 mm) - same |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| CPU Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum CPU Frequency | 24 MHz | 24 MHz | 24 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB |
| RAM | 4 KB | 4 KB | 4 KB |
| Digital I/O Pins | 17 | 17 | 17 |
| Timers | 2 × 16-bit | 2 × 16-bit | 2 × 16-bit |
Key Differentiators
- Directly verifiable same-family Cortex-M0+ replacement (vs EFM32ZG108F32-B-QFN24)
- Same performance and memory configuration in the R-ordered-device listing (vs EFM32ZG108F32-B-QFN24R)
- Avoids misleading cross-family package matching (vs EFM32TG108F32-QFN24)
Design Notes
Build the power budget around the complete operating cycle rather than using processor frequency alone. The manufacturer identifies low-energy techniques, fast wake-up, and energy-saving modes, but the supplied excerpts do not include measured run, sleep, or stop currents. Measure average current with the intended sensor, pull networks, regulator, and communications hardware attached, then verify wake-up latency against the application’s sampling and communication deadlines.
Treat the 24-QFN exposed pad as a mandatory thermal and electrical design element. Follow the manufacturer’s land pattern and assembly recommendations, provide a continuous ground connection where specified, minimize thermal discontinuities under the package, and avoid placing high-current or heat-generating circuitry directly beneath the device. Confirm solder-paste volume and stencil aperture from the package drawing rather than copying a generic QFN-24 footprint.
Assign the 17 digital I/O pins against the complete peripheral plan before fixing the PCB layout. The EFM32 Zero Gecko platform supports configurable peripheral I/O locations, which can improve routing, but alternate-function choices still impose placement and timing constraints. Keep sensitive analog or communication paths away from noisy switching nodes and provide the decoupling arrangement specified in the manufacturer datasheet.
Do not treat every same-package EFM32 device as a drop-in replacement. EFM32TG108F32-QFN24 uses Cortex-M3 at up to 32 MHz, and EFM32HG108F32G-C-QFN24 belongs to a different device family; matching the QFN outline does not guarantee matching pin functions, memories, voltage, or peripherals. Before substitution, compare the manufacturer pin tables, electrical limits, package drawing, and device revision notes.
Compliance Information
The supplied verified excerpts do not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for this exact MPN; these fields remain unknown rather than inferred.
