EFM32TG840F16-QFN64 - 32MHz Cortex-M3 MCU | Silicon Labs
部品番号: EFM32TG840F16-QFN64 ✓ 生産中EFM32TG840F16-QFN64 概要
A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, volatile data memory, and peripherals on one integrated circuit. The ARM Cortex-M3 provides the instruction set and processing foundation, while Flash stores the firmware and RAM supports stack operations, data handling, and peripheral activity. The Tiny Gecko family adds energy-saving modes and fast wake-up behavior for systems that spend substantial time idle.
The EFM32TG840F16-QFN64 operates at speeds up to 32 MHz and provides 16 kB of Flash, 4 kB of RAM, and 56 digital I/O pins. Two 16-bit timers support periodic timing, event counting, and basic motor or control functions. Its low-power architecture makes it suitable for battery-operated equipment, connected sensors, compact industrial controls, and other applications where average energy consumption matters as much as processing capability.
The 64-QFN package supports dense PCB layouts while exposing 56 digital I/O pins for external interfaces. Its peripheral set and energy-management features allow a design to remain in a low-power state during idle periods and resume operation quickly when work is required. This combination is useful in portable measurement, industrial monitoring, and low-power embedded control systems.
Typical uses include sensor nodes, small environmental monitors, industrial condition-monitoring devices, battery-powered accessories, and embedded control modules. Designers should allocate memory carefully for firmware, stack depth, and buffered data, and should preserve the recommended decoupling and exposed-pad layout shown in the manufacturer hardware design guidance.
The most important design consideration is balancing performance against duty cycle. Running the Cortex-M3 core at 32 MHz supports responsive computation, but a low-energy application can often spend most of its time in a lower-power mode. Firmware can then use timers, interrupts, and wake-up sources to perform work only when needed.
This product overview consolidates the core specifications, package details, practical design guidance, sourcing questions, and verified family alternatives for engineers evaluating the EFM32TG840F16-QFN64. It also distinguishes true same-footprint alternatives from devices that would require a PCB redesign.
ドロップイン代替品: EFM32TG840F16-QFN64 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
EFM32TG840F16-D-QFN64
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EFM32TG840F16-D-QFN64R
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EFM32TG840F16-QFN64 最大定格＆電気的特性
| Product Type | ARM Cortex-M3 32-bit microcontroller (MCU) |
| Product Series | EFM32 Tiny Gecko |
| Processor Core | ARM Cortex-M3 |
| Maximum CPU Frequency | 32 MHz |
| Flash Memory | 16 kB (16K x 8) |
| RAM | 4 kB (4K x 8) |
| Digital I/O Pins | 56 pins |
| Timer Counters | 2 x 16-bit timers |
| Supply Voltage Range | 1.98 V to 3.8 V |
| パッケージ | 64-QFN (9x9 mm) |
| Package Type | QFN surface-mount package |
| Architecture | 32-bit ARM |
| Program Memory Type | Flash |
| Low-Power Features | Energy-saving modes and fast wake-up |
| 実装タイプ | Surface Mount |
| 最大クロック周波数 | 32 MHz |
| データバス幅 | 32-bit |
EFM32TG840F16-QFN64 qfn surface-mount package ピン配置ガイド
EFM32TG840F16-QFN64 (qfn surface-mount package パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: EFM32TG840F16-QFN64.
詳細は データシート をご参照ください。
主な用途
EFM32TG840F16-QFN64 の用途: 6 件s: Battery-Powered Sensor Node, Industrial Condition Monitoring, Environmental Monitoring Instrument, Battery-Powered Accessory, Compact Embedded Control Module, Connected Measurement Device.
Battery-Powered Sensor Node
The EFM32TG840F16-QFN64 fits compact sensor nodes because its 32 MHz ARM Cortex-M3 can process measurements without occupying a large processor package, while the Tiny Gecko platform provides energy-saving modes and fast wake-up operation. Its 56 digital I/O pins leave interface capacity for sensors, indicators, and digital controls despite the 64-QFN package. With 16 kB of Flash and 4 kB of RAM, firmware can hold acquisition logic, communication routines, and a modest data buffer. The principal design trade-off is limited RAM, so use short buffers, efficient peripheral transfers, and interrupt-driven processing rather than large local data sets.
おすすめ
Industrial Condition Monitoring
For industrial condition monitoring, the EFM32TG840F16-QFN64 provides a useful combination of 56 digital I/O pins, two 16-bit timers, and a 32 MHz processing core in a 9x9 mm footprint. Timers can establish periodic sampling or service intervals, while interrupt-driven firmware can respond to sensor thresholds without continuous polling. The low-power platform supports equipment that spends long intervals between measurements. Engineers should confirm the electrical limits of each connected sensor and use isolation or protection where industrial wiring can expose the MCU to transients or ground-potential differences.
おすすめ
Environmental Monitoring Instrument
The EFM32TG840F16-QFN64 is appropriate for compact environmental monitors that combine temperature, humidity, gas, or light sensing with local filtering and status reporting. Its 32 MHz Cortex-M3 core can supervise calibration routines, compensate sensor readings, and format results, while 56 digital I/O pins support several sensors and controls. The 16 kB Flash capacity suits a focused firmware image rather than a large application framework, and 4 kB RAM requires disciplined buffer management. Low-energy modes can extend operating time in field-deployed instruments when the duty cycle is dominated by periodic sampling.
おすすめ
Battery-Powered Accessory
The EFM32TG840F16-QFN64 can serve as the control MCU in a battery-powered accessory requiring local buttons, status LEDs, motor timing, or serial communication. Its two 16-bit timers are useful for precise periodic actions, and the 32 MHz core leaves processing headroom for control logic. Energy-saving modes and fast wake-up are particularly valuable when the product is inactive between user interactions. Use the timers and interrupts to drive the product rather than keeping the core active, and size the Flash and RAM budget around the selected accessory functions.
おすすめ
Compact Embedded Control Module
The EFM32TG840F16-QFN64 is useful in compact embedded control modules that need a 32-bit processor without the area required by a larger microcontroller. Its 56 digital I/O pins provide a broad connection surface for sensors, actuators, displays, and communications, while the 64-QFN 9x9 mm package supports dense layouts. The 4 kB RAM limit makes deterministic memory planning important, particularly when multiple interrupt routines or communication buffers operate concurrently. Choose this part when firmware remains small and the design benefits from the Tiny Gecko energy-management architecture.
おすすめ
Connected Measurement Device
In a connected measurement device, the EFM32TG840F16-QFN64 can acquire sensor data, perform local calculations, and supervise a serial communications link. A 32 MHz Cortex-M3 core handles protocol and filtering tasks, while 56 digital I/O pins allow connection to analog front ends through external converters, switches, or amplifiers. The MCU's low-power operation is useful in portable instruments, although communications activity can dominate the energy budget. Limit buffering to the available 4 kB RAM and use DMA-capable peripherals where applicable to reduce CPU overhead during transfers.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: EFM32TG840F16-QFN64 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | EFM32TG840F16-D-QFN64 | EFM32TG840F16-D-QFN64R |
|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs |
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| Processor Core | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 16 kB | 16 kB | 16 kB |
| RAM | 4 kB | 4 kB | 4 kB |
| Digital I/O Pins | 56 pins | 56 pins | 56 pins |
| Timer Counters | 2 x 16-bit timers | 2 x 16-bit timers | 2 x 16-bit timers |
| Supply Voltage Range | 1.98 V to 3.8 V | 1.98 V to 3.8 V | 1.98 V to 3.8 V |
| Low-Power Features | Energy-saving modes and fast wake-up | Energy-saving modes and fast wake-up | Energy-saving modes and fast wake-up |
主な差別化要因
- Identical core and memory configuration （vs EFM32TG840F16-D-QFN64)
- Same 9x9 mm footprint for PCB reuse （vs EFM32TG840F16-D-QFN64)
- Low-power wake-up architecture retained （vs EFM32TG840F16-D-QFN64R)
設計ノート
Place the required input and bulk-decoupling capacitors close to the supply and ground pins, and follow the placement and capacitance values in the manufacturer hardware design guidance. Keep high-current return paths away from sensitive analog input routing. Because the device operates from 1.98 V to 3.8 V, verify that the regulator tolerance, transient response, and startup sequence remain within the limits specified for the exact device grade.
Treat the exposed pad as both an electrical connection and a thermal path. Use the manufacturer land pattern and solder mask recommendations to preserve solder access for inspection and rework, connect the pad as specified, and provide a continuous ground plane beneath the package where permitted. Validate junction temperature in the final enclosure because airflow and surrounding components determine how much heat can leave the 64-QFN package.
Use the manufacturer's 64-QFN land pattern rather than a generic QFN footprint. Account for the exposed pad, its connection, solder-mask limits, and the position of pins 1 and neighboring pads when defining the PCB footprint. Keep crystal, timing-sensitive, and communication traces short, and route clocks away from fast-switching or high-current paths to reduce susceptibility to noise-induced timing errors.
Plan the 16 kB Flash and 4 kB RAM budgets before finalizing application code. Include stack depth, interrupt nesting, communication buffers, and library overhead in the RAM estimate. Avoid blocking waits in low-power designs; use the two 16-bit timers, interrupts, and the Tiny Gecko wake-up features so the processor can remain in a lower-energy state during idle periods.
コンプライアンス情報
Compliance declarations were not present in the manufacturer page or product snippets listed for this device. The family supports RoHS and REACH language only when confirmed by the manufacturer documentation or product declaration.
