EFM32TG108F4-D-QFN24 - 32MHz Cortex-M3 4KB MCU | Silicon Labs
Référence : EFM32TG108F4-D-QFN24 ✓ ActifEFM32TG108F4-D-QFN24 Présentation
An EFM32 microcontroller is a 32-bit embedded processing IC that combines an ARM Cortex-M processor core with flash memory, RAM, general-purpose I/O, timers, communications peripherals, and low-energy management features. Within the product hierarchy, this device is an MCU, embedded controller, semiconductor, and energy-conscious alternative to more general-purpose microcontroller platforms when compact size and low standby consumption are important design priorities.
The verified device data identifies an ARM Cortex-M3 core operating up to 32 MHz, 4 KB of programmable Flash organized as 4K by 8, 2 KB of SRAM, and 17 digital I/O pins. It also includes two 16-bit timers. Its small 5 mm by 5 mm QFN-24 land pattern supports dense PCB construction, while the 24-QFN package provides a practical surface-mount option for wearable, sensor, embedded-control, and connected peripheral designs.
The Tiny Gecko architecture emphasizes energy-saving operating modes, fast wake-up times, and retention-oriented low-energy techniques. These characteristics are particularly valuable in battery-operated equipment where the controller may spend most of its time asleep and briefly process sensor readings, control outputs, or exchange data. The Cortex-M3 processor provides a substantially more capable instruction set than an 8-bit controller while retaining a compact, cost-conscious embedded footprint.
Typical uses include low-power sensor nodes, compact industrial sensing modules, battery-powered accessories, wearable-device subcontrollers, building-control endpoints, and small instrumentation products. In these applications, the 4 KB Flash and 2 KB RAM favor firmware focused on control logic, sampling, local signal conditioning, and communications support rather than large graphical interfaces or extensive local data storage.
Designers should verify the complete exposed-pad connection, pin multiplexing, decoupling requirements, programming interface, and operating limits against the manufacturer datasheet before layout release. The verified snippets provide the principal electrical and package information, but they do not expose the complete QFN-24 pin table or all timing and peripheral details, so unsupported values are not inferred in this data set.
This page combines verified manufacturer and distributor specifications with package and lifecycle context, a strictly filtered replacement analysis, and engineering-oriented application guidance. It distinguishes confirmed parameters from missing details, making it more useful for preliminary design decisions and procurement than a distributor listing alone.
Alternatives de remplacement direct pour EFM32TG108F4-D-QFN24 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec EFM32TG108F4-D-QFN24 (même facteur de forme et même empreinte) — différant par Flash Memory, Package, Series.
EFM32TG108F4-QFN24
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Voir la fiche technique →EFM32TG108F4-D-QFN24 Valeurs maximales et caractéristiques électriques
| Product Type | 32-bit ARM Cortex-M3 microcontroller |
| Series | EFM32 Tiny Gecko |
| Maximum CPU Frequency | 32 MHz |
| CPU Core | ARM Cortex-M3 |
| Flash Memory | 4 KB (4K x 8) |
| RAM Memory | 2 KB |
| Digital I/O Pins | 17 |
| Timers | 2 x 16-bit timers |
| Supply Voltage Range | 1.98 V to 3.8 V |
| Plage de température de fonctionnement | -40 °C to +85 °C |
| Boîtier | 24-QFN (5 mm x 5 mm) |
| Type de montage | Surface mount |
| Shipping Format | Tape and reel |
| Low-Power Features | Energy-saving modes and fast wake-up times |
| RoHS Compliance | Compliant |
| Bromine and Antimony Content | Free of Br and Sb |
| Leadframe Finish | Nickel-Palladium-Gold preplated leadframe |
| Programmer Support | Elnec EFM32TG108F4 QFN24 device support |
Guide de configuration des broches du EFM32TG108F4-D-QFN24 24-qfn (5 mm x 5 mm)
Configuration des broches du EFM32TG108F4-D-QFN24 (boîtier 24-qfn (5 mm x 5 mm)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour EFM32TG108F4-D-QFN24.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
EFM32TG108F4-D-QFN24 convient pour 6 applications: Battery-Powered Sensor Nodes, Industrial Condition Monitoring, Wearable and Personal-Tracking Devices, Smart Building-Control Endpoints, Compact Instrumentation Controls, Connected Embedded Accessories.
Battery-Powered Sensor Nodes
The EFM32TG108F4-D-QFN24 fits compact battery-powered sensor nodes because it combines a 32 MHz ARM Cortex-M3 core with the Tiny Gecko platform's energy-saving modes and fast wake-up behavior. Its 4 KB Flash and 2 KB RAM can support acquisition logic, threshold processing, and short communications routines without imposing a large board footprint. The 24-QFN 5 mm by 5 mm package also conserves PCB area. For deployment, the designer should keep the processor inactive during long measurement intervals, use the low-power features for duty-cycled operation, and verify sleep current and wake-up timing from the manufacturer electrical data before calculating battery life.
Recommandé
Industrial Condition Monitoring
The EFM32TG108F4-D-QFN24 is suitable for industrial condition-monitoring modules that periodically inspect temperature, vibration, or switch-state inputs and report anomalies over a wired or wireless interface. Its two 16-bit timers can support periodic sampling and timing tasks, while 17 digital I/O pins provide useful control and status connections on a space-constrained board. The Cortex-M3 processor supplies more headroom than an 8-bit controller for signal filtering and protocol handling. A robust design should isolate sensitive inputs from switching circuitry, define safe behavior during sensor faults, and confirm the device's full operating-temperature specification before industrial deployment.
Recommandé
Wearable and Personal-Tracking Devices
The EFM32TG108F4-D-QFN24 can serve as a secondary controller in wearables, personal trackers, and compact accessories where board area and standby energy are important. Its 5 mm by 5 mm QFN-24 package leaves room for sensors, a radio module, and a battery, while the low-energy Tiny Gecko architecture supports brief active intervals between long idle periods. The available 2 KB RAM and 4 KB Flash are suitable for modest buffering and compact firmware, not large histories or complex user interfaces. Designers should minimize GPIO leakage, use the device's low-power states carefully, and verify the exposed-pad and assembly process before high-volume wearable production.
Recommandé
Smart Building-Control Endpoints
The EFM32TG108F4-D-QFN24 is appropriate for compact building-control endpoints that monitor digital inputs and operate relays, indicators, or communications interfaces. Seventeen digital I/O pins provide practical connectivity for switches, sensors, and status signals, while two 16-bit timers support repetitive control or timing functions. Its low 3.8 V maximum supply supports integration with modern low-voltage building electronics, although suitable driver and protection circuits remain necessary for inductive or externally powered loads. For reliable deployment, engineers should define fail-safe states, isolate long wiring from sensitive logic, and validate the controller across the intended -40 °C to +85 °C operating range.
Recommandé
Compact Instrumentation Controls
The EFM32TG108F4-D-QFN24 can control small measurement and instrumentation products where a 32-bit processor, local timers, and modest I/O capacity are needed without a larger microcontroller package. The 4 KB Flash and 2 KB RAM are appropriate for boot control, calibration constants, measurement sequencing, and a limited command interface. Its 24-QFN form factor supports dense front panels and portable instruments. A successful design should separate analog input conditioning from the MCU supply and ground paths, use suitable decoupling referenced to the manufacturer guidance, and avoid assuming that 4 KB of Flash can accommodate a large protocol stack plus application firmware without checking the final linker map.
Recommandé
Connected Embedded Accessories
The EFM32TG108F4-D-QFN24 works well as the host controller for a compact connected accessory that pairs a serial radio or sensor with local control logic. The Cortex-M3 core can handle packet preparation, state management, and device I/O at speeds up to 32 MHz, while the small QFN-24 package preserves space for the communication hardware. Two 16-bit timers are useful for protocol timing or periodic polling. Integration should account for the radio module's supply-current peaks and the need for uninterrupted local operation when the link is unavailable. Firmware should use bounded buffers because only 2 KB of RAM is available, and the radio interface should be validated for signal integrity away from sensitive analog circuitry.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EFM32TG108F4-D-QFN24 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | EFM32TG108F4-QFN24 |
|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs |
| Package | 24-QFN (5 mm x 5 mm) | 24-QFN (5 mm x 5 mm) - same |
| CPU Core | ARM Cortex-M3 | ARM Cortex-M3 |
| Maximum CPU Frequency | 32 MHz | 32 MHz |
| Flash Memory | 4 KB (4K x 8) | 4 KB |
| RAM Memory | 2 KB | 2 KB |
| Digital I/O Pins | 17 | 17 |
| Timers | 2 x 16-bit timers | 2 x 16-bit timers |
Principaux différenciateurs
- Higher CPU performance than the closest verified Zero Gecko family member (vs EFM32ZG108F4-QFN24)
- Identical core and memory configuration to the verified non-D ordering form (vs EFM32TG108F4-QFN24)
- Lower flash allocation than the higher-memory Tiny Gecko option (vs EFM32TG108F32-QFN24)
Notes de conception
Place the MCU and its required decoupling components close to the device pins, and follow the complete QFN-24 land pattern from the manufacturer package drawing. The 5 mm by 5 mm package leaves limited escape room, so fanout routing and the exposed-pad connection must be planned before placement. Verify whether the central thermal pad is electrically tied to a supply or ground net in the selected pin configuration; do not infer that connection solely from the generic package outline.
Design the 1.98 V to 3.8 V supply so it remains within the MCU's permitted operating range during sleep, wake-up, and attached peripheral activity. Place local bulk and high-frequency decoupling at the supply pins using the values and tolerances stated in the manufacturer datasheet. In battery systems, account for peak current from any radio or sensor connected to the same rail and prevent backfeeding through unpowered I/O pins during shutdown.
Do not treat every EFM32 family member with a QFN24 outline as a pin-compatible substitute. EFM32ZG108F4-QFN24 changes the processor core from Cortex-M3 to Cortex-M0+ and its maximum frequency to 24 MHz, while EFM32TG108F32-QFN24 raises Flash from 4 KB to 32 KB and RAM from 2 KB to 4 KB. Review GPIO multiplexing, peripheral availability, startup behavior, programming requirements, and package connections before reusing an existing board.
Keep clocks, high-speed communications, and switching power stages away from sensitive analog inputs and the MCU's supply return path. Continuous ground routing under the QFN footprint and short return paths for bypass capacitors help control supply noise. If the board includes radio or sensor modules, apply the module vendor's keepout and antenna-clearance guidance rather than treating the compact MCU package as an isolated signal source.
Informations de conformité
The verified EFM32TG108 datasheet snippet states that all EFM32 packages are RoHS compliant and free of bromine and antimony. It also identifies a nickel-palladium-gold preplated leadframe. REACH, AEC-Q100, general lead-free status, halogen-free status, and conflict-minerals status were not provided.
