EFM32TG822F8-D-QFP48 - 32MHz Cortex-M3 MCU | Silicon Labs
MPN： EFM32TG822F8-D-QFP48 ✓ 啟用中EFM32TG822F8-D-QFP48 概覽
An ARM Cortex-M3 microcontroller is a 32-bit reduced-instruction-computing processor commonly used in embedded control systems. The Cortex-M3 belongs to the ARM processor family and combines deterministic interrupt handling, compact code density, and an integrated ecosystem for firmware development. The EFM32TG series adds Silicon Labs' Tiny Gecko architecture, energy-management peripherals, and configurable I/O to create a low-power microcontroller platform for battery-operated and energy-conscious products.
The EFM32TG822F8-D-QFP48 operates at up to 32 MHz and provides 8 KB of flash program memory and 2 KB of SRAM. Its 37 configurable I/O locations support digital communication, sensing, control, and general-purpose peripheral functions. The device can operate from 2.5 V or 3.3 V supply rails and is specified for an ambient operating range of -40°C to +85°C. Its 48-TQFP surface-mount package provides a practical option for compact industrial, consumer, and embedded-control assemblies.
Low-power operation is a defining characteristic of the EFM32TG family. The manufacturer datasheet reports consumption as low as 0.6 µA in Stop mode and approximately 150 µA/MHz in Run mode. Autonomous peripherals allow selected activities to continue without constant CPU intervention, helping reduce overall energy use in systems that alternate between active measurement and extended low-power intervals.
Typical applications include connected sensor nodes, compact industrial controllers, low-power data loggers, battery-operated monitoring equipment, and embedded accessories that require a mix of analog-capable peripherals, communication interfaces, and general-purpose I/O. The 8 KB flash capacity is most appropriate for focused firmware rather than complex graphical workloads or large application code sets.
When designing around this microcontroller, use the pin-description table in the manufacturer datasheet when assigning board functions, and reserve the exposed programming and debug interface for reliable programming and field diagnostics. Place bypass capacitors close to the supply pins and keep sensitive analog or communication traces away from fast-switching nodes to reduce coupling.
This product page combines the EFM32TG822F8-D-QFP48 specifications, package information, application guidance, drop-in family alternatives, and engineering-oriented design notes. It is intended to help hardware engineers assess processor performance, memory capacity, power behavior, package compatibility, and PCB implementation before selecting the device for a new embedded design.
直接替換替代品，適用於 EFM32TG822F8-D-QFP48 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： EFM32TG822F8-D-QFP48 （相同外形與佔位） — 差異在於 Flash Organization, Operating Temperature Range, Package, Product Type, Series.
EFM32TG822F8-QFP48
✅ 直接替換聯絡詢價
查看資料表 →EFM32TG822F16-QFP48
✅ 直接替換聯絡詢價
查看資料表 →EFM32TG822F32-QFP48
✅ 直接替換聯絡詢價
查看資料表 →EFM32TG822F16-QFP48T
✅ 直接替換📋 參考替代品（不在目錄中）
EFM32TG822F32-QFP48T
✅ 直接替換📋 參考替代品（不在目錄中）
EFM32TG822F8-D-QFP48 最大額定值與電氣特性
| Product Type | 32-bit ARM Cortex-M3 microcontroller |
| Series | EFM32 Tiny Gecko |
| Core Processor | ARM Cortex-M3 |
| Core Size | 32-bit |
| 最大時脈頻率 | 32 MHz |
| Flash Memory Size | 8 KB |
| Flash Organization | 8K x 8 bits |
| RAM Size | 2 KB |
| RAM Organization | 2K x 8 bits |
| Number of I/O | 37 configurable I/O locations |
| 供應電壓 | 2.5 V or 3.3 V |
| 工作溫度範圍 | -40°C to +85°C |
| Stop Mode Current | 0.6 µA minimum |
| Run Mode Current | 150 µA/MHz |
| 封裝 | 48-pin TQFP, 7 mm x 7 mm |
| 安裝類型 | Surface mount |
| Program Memory Type | Flash |
EFM32TG822F8-D-QFP48 48-pin tqfp, 7 mm x 7 mm 腳位配置指南
EFM32TG822F8-D-QFP48（48-pin tqfp, 7 mm x 7 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： EFM32TG822F8-D-QFP48.
請參閱 資料表 以查看完整腳位配置。
典型應用
EFM32TG822F8-D-QFP48 適用於 6 應用s: Battery-Powered Sensor Nodes, Compact Industrial Controllers, Low-Power Data Loggers, Connected Monitoring Accessories, Embedded Measurement Instruments, Battery-Powered Accessory Controls.
Battery-Powered Sensor Nodes
The EFM32TG822F8-D-QFP48 is suitable for compact sensing devices that spend most of their operating cycle in a low-power state. Its ARM Cortex-M3 core runs at up to 32 MHz, while the EFM32TG family's Stop-mode consumption can reach 0.6 µA. This combination supports periodic environmental readings, local threshold evaluation, and brief communications without requiring a higher-power host processor. The 8 KB flash budget favors focused firmware with a small bootloader, while 2 KB of RAM supports lightweight sampling and protocol state. Designers should activate only the peripherals needed for each measurement, use the MCU's low-power modes between events, and account for sensor and radio consumption when estimating battery life.
推薦
Compact Industrial Controllers
The EFM32TG822F8-D-QFP48 can serve as the control core for compact industrial modules that coordinate sensors, discrete outputs, and a low-speed communications link. Its 37 configurable I/O locations provide flexibility for status indicators, interlocks, digital inputs, and actuator-control signals. Operation from 2.5 V or 3.3 V allows integration with common industrial logic levels, while the -40°C to +85°C ambient rating supports equipment outside harsh extended-temperature environments. Run-mode current of approximately 150 µA/MHz makes scheduled processing practical for low-duty-cycle controllers. Firmware should include watchdog recovery, valid-state checks, and communication timeouts so a compact controller continues operating predictably when field wiring or peripheral faults occur.
推薦
Low-Power Data Loggers
The EFM32TG822F8-D-QFP48 is appropriate for low-power data loggers that record a limited set of measurements and wake periodically to transmit results. Its 32 MHz Cortex-M3 core can handle sensor conditioning, timestamp management, and protocol formatting without relying on a higher-power application processor. The 8 KB flash stores firmware and a small configuration area, while 2 KB of RAM supports temporary sample batches and packet construction. Because internal storage is limited, the logger should buffer only the information needed during the active interval or use external nonvolatile storage for long records. Power calculations should combine the MCU's 150 µA/MHz Run-mode figure with the Stop-mode 0.6 µA value and the active current of the sensor, memory, and communications hardware.
推薦
Connected Monitoring Accessories
The EFM32TG822F8-D-QFP48 fits connected monitoring accessories that need local control, status reporting, and configurable I/O in a small 48-TQFP footprint. The available flash and RAM are suitable for a dedicated accessory controller rather than a gateway or rich user-interface system. A practical design can use the Cortex-M3 core for protocol handling and event logic while relying on external circuitry for radio transmission, higher-current outputs, or isolated interfaces. The low-power characteristics help preserve battery life in intermittently connected products, while 37 I/O locations simplify button, indicator, and sensor-hookup requirements. The final firmware should use deterministic wake behavior, graceful connection recovery, and a clear separation between low-power idle tasks and radio-intensive operations.
推薦
Embedded Measurement Instruments
The EFM32TG822F8-D-QFP48 can act as the supervisory controller in a compact measurement instrument where the main analog conversion is performed by dedicated circuitry. Its configurable I/O can operate status indicators, range-select signals, trigger interfaces, and communications ports, while the 32 MHz core handles calibration tables, sequencing, and data formatting. Because the device includes only 8 KB of flash and 2 KB of RAM, the firmware should avoid large buffers and complex graphical interfaces. External flash, a dedicated display controller, or a higher-memory MCU can be added when local storage requirements grow. Use the manufacturer pin descriptions to allocate analog-adjacent control signals and keep high-current switching stages physically separated to prevent noise from disturbing sensitive measurements.
推薦
Battery-Powered Accessory Controls
The EFM32TG822F8-D-QFP48 is appropriate for battery-powered products requiring dependable local control, input handling, and simple output sequencing. Its low Stop-mode current and configurable peripherals help separate idle and active periods, allowing the MCU to remain responsive without continuously running the processor. The 48-TQFP package supports dense products but requires careful escape routing between closely spaced leads, so assembly planning should account for thermal-pad or exposed-connection requirements where applicable. Firmware should define safe output states before enabling actuators, use the manufacturer's reset and brownout guidance, and provide recovery behavior after watchdog resets. This combination makes the device useful in compact accessories where the required computation is modest but reliable state management is essential.
推薦
推薦產品摘要
工程參考資料，適用於 EFM32TG822F8-D-QFP48 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | EFM32TG822F8-QFP48 | EFM32TG822F16-QFP48 | EFM32TG822F32-QFP48 | EFM32TG822F16-QFP48T | EFM32TG822F32-QFP48T |
|---|---|---|---|---|---|---|
| Package | 48-TQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Core | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit |
| Maximum Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 8 KB | 8 KB | 16 KB | 32 KB | 16 KB | 32 KB |
主要差異化特點
- Lower flash capacity supports a focused embedded-control design (對比EFM32TG822F32-QFP48)
- Retains the same 32 MHz Cortex-M3 processing platform as the larger-memory family (對比EFM32TG822F16-QFP48)
- Offers the smallest listed program-memory footprint in the comparison group (對比EFM32TG822F8-QFP48T)
設計說明
Estimated: using the manufacturer's 150 µA/MHz Run-mode figure, the CPU contributes about 4.8 mA at a 32 MHz clock before peripheral and I/O loading. Actual device current will be higher when the ADC, communications, or other peripherals are active. For battery-powered designs, calculate the complete active interval rather than using the CPU frequency alone, and use the 0.6 µA Stop-mode figure as the sleep-state baseline only when all external loads are also placed in their low-power states.
Place the required supply bypass capacitors close to the MCU supply pins and provide a short, direct return path to the ground plane. Because the 48-TQFP leads are closely spaced, prioritize escape routing for power, reset, programming, and high-frequency clock signals before routing general-purpose I/O. Use a solid ground reference under the device and avoid placing switching-regulator or high-current output traces directly beneath sensitive analog and communication nets.
Do not treat the 8 KB flash and 2 KB RAM limits as interchangeable with the higher-memory EFM32TG822 variants. Review linker-map results, stack depth, protocol buffers, and update-image requirements before committing to the target. Also verify reset, programming, and debug assignments from the manufacturer pin-description table; a mechanically compatible 48-TQFP footprint does not remove the need to confirm pin-level requirements for the exact suffix.
Keep clock, programming, and communication routing away from noisy analog inputs and switching-power nodes. Maintain a continuous ground reference beneath signal traces and use short return paths rather than routing over split plane boundaries. Where an external sensor or communications device shares the board, separate its high-current return path from the MCU and analog ground currents. Confirm all pin multiplexing and peripheral assignments in the Silicon Labs configuration documentation before finalizing the schematic.
合規資訊
No exact-order-code compliance declarations were identified. The -40°C to +85°C operating-temperature specification is not evidence of AEC-Q100 qualification. Confirm RoHS, REACH, lead-free, halogen-free, conflict-minerals, and automotive status using the manufacturer documentation for the exact MPN.
