EFM32LG895F256G - 48MHz ARM Cortex-M3 MCU, 256KB Flash | Silicon Labs
N.º da peça: EFM32LG895F256G ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $7.42 | $7,42 |
| 10 | $6.74 | $67,40 |
| 100 | $5.95 | $595,00 |
| 500 | $5.21 | $2.605,00 |
| 1.000 | $4.62 | $4.620,00 |
| 3.000 | $3.94 | $11.820,00 |
EFM32LG895F256G Visão geral
An ARM Cortex-M3 microcontroller is a 32-bit RISC processor core from the ARM Cortex family optimized for embedded applications that demand deterministic real-time response, low power consumption, and a strong ecosystem of tools and RTOS support. Cortex-M3 sits in the broader hierarchy: ARM Cortex-M -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. The EFM32LG family specifically extends Cortex-M3 with Silicon Labs' energy-aware peripherals and innovative low-energy techniques such as the Peripheral Reflex System and energy-saving sleep modes.
Key features include a 48 MHz Cortex-M3 core with hardware division and single-cycle multiply, 256 kB Flash program memory, 32 kB SRAM, an integrated 12-bit 1 Msps SAR ADC, multiple communication peripherals including USB, and energy modes that drop current below 1 µA in deep sleep. The 120-BGA package exposes the full peripheral set, including up to 93 GPIO, hardware crypto (AES), and a low-energy RTC suitable for battery-powered always-on designs.
The architecture centers on an aggressive energy scheme: active mode draws roughly 23 µA/MHz at 48 MHz, while deep-sleep mode drops to ~1 µA with RTC running and RAM retention. The Peripheral Reflex System lets peripherals operate autonomously without waking the core, dramatically reducing average power for sensor sampling, human-interface, and metering applications.
Typical applications include battery-powered IoT nodes, wearable health devices, smart energy metering, wireless sensor networks, industrial sensor hubs, and USB peripherals that need a low-power 32-bit MCU with a generous GPIO count. Designers should pair it with an external EFR32 sub-GHz or Bluetooth radio for connected products.
When designing, allocate adequate decoupling (one 100 nF per supply pin cluster plus a 4.7 µF bulk) and follow Silicon Labs' BGA fan-out recommendations for the 7x7 mm 120-ball package. Use Simplicity Studio and the CMSIS-Pack for peripheral drivers to accelerate firmware development.
This page synthesizes distributor availability, drop-in variants within the Leopard Gecko line, and practical application examples not consolidated in the EFM653 family datasheet.
Alternativas drop-in para EFM32LG895F256G — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EFM32LG895F128G-F-BGA120
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM32GG895F512G-E-BGA120
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM32LG295F256G-BGA120
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM32LG895F256G-F-BGA120R
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM32LG895F256G-E-BGA120
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EFM32LG895F256G Classificações máximas e características elétricas
| Core | ARM Cortex-M3 (32-bit) |
| Family | EFM32 Leopard Gecko |
| Maximum CPU Clock | 48 MHz |
| Program Flash Memory | 256 kB |
| RAM | 32 kB |
| Digital I/O Pins | 93 |
| Timer/Counters | 4 x 16-bit |
| ADC | 12-bit SAR (1 Msps) |
| Supply Voltage (Vdd) | 1.98 V to 3.8 V |
| Encapsulamento | 120-BGA (7x7 mm) |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40C to +85C |
| USB | Yes (USB 2.0 Full-Speed) |
| AES Hardware Accelerator | Yes |
| Status RoHS | Compliant |
Guia de Configuração de Pinos do EFM32LG895F256G 120-bga (7x7 mm)
Configuração de pinos para EFM32LG895F256G (pacote 120-bga (7x7 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para EFM32LG895F256G.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
EFM32LG895F256G é adequado para 6 aplicaçãos: Battery-Powered IoT Sensor Node, Wearable Health Monitoring Device, Smart Energy Meter, USB Human Interface Device (HID), Industrial Sensor Hub, Connected Lighting Controller.
Battery-Powered IoT Sensor Node
The EFM32LG895F256G's 1 µA deep-sleep current and Peripheral Reflex System let it sleep with peripherals running autonomously, ideal for IoT sensor nodes that wake only on threshold events. The 48 MHz Cortex-M3 executes protocol stacks like Zigbee or Thread in active mode at ~23 µA/MHz, while 256 kB Flash holds over-the-air update images. With 32 kB RAM it stores sensor frames, and 93 GPIO accommodates pushbuttons, LEDs, and analog sensors. Place 100 nF decouplers near each supply cluster and a 4.7 µF bulk for ADC reference stability.
Recomendado
Wearable Health Monitoring Device
Wearables need always-on operation from a coin cell, and the EFM32LG895F256G's 1.98-3.8 V supply and ~1 µA RTC retention make it well-suited for fitness bands and continuous health monitors. The 12-bit 1 Msps ADC digitizes photoplethysmography (PPG) and ECG signals, while the AES accelerator secures BLE pairing payloads when paired with an external EFR32 radio. The 120-BGA package supports compact PCB layouts with 93 GPIO for displays, buttons, and haptic feedback drivers. Operating temp -40 to +85 C supports skin-contact and on-wrist thermal ranges.
Recomendado
Smart Energy Meter
Smart meters demand years of battery service and robust computation for tariff calculations. The EFM32LG895F256G's low-energy modes cut average current to single-digit µA while running energy accumulation in sleep, and its hardware AES secures wireless M-Bus or wM-Bus link layers. The 12-bit ADC at 1 Msps samples CT/PT-derived analog signals, while 32 kB RAM holds rolling consumption buffers. The 120-BGA footprint accommodates assistive switch over or capacitive touch buttons via the peripheral touch sensor (ACMP). Use a 32.768 kHz crystal for RTC accuracy in tariff timing.
Recomendado
USB Human Interface Device (HID)
The integrated USB 2.0 Full-Speed peripheral makes the EFM32LG895F256G a strong fit for USB HID peripherals such as keyboards, mice, presenters, and gaming controllers. USB suspend current stays under the 1 µA deep-sleep budget when not active, while 256 kB Flash stores HID descriptor tables and vendor command handlers. The 12-bit ADC can read analog thumbsticks, and 93 GPIO supports multi-button matrices with scan-time DMA. The 120-BGA package suits compact consumer enclosures, and Simplicity Studio provides HID class drivers out of the box.
Recomendado
Industrial Sensor Hub
Factory sensor hubs aggregate multiple field-bus interfaces and present processed data to a PLC or gateway. The EFM32LG895F256G's 4 USART, 2 SPI, and 2 I2C peripherals handle RS-485, RS-232, SPI sensors, and I2C peripherals concurrently. The 48 MHz Cortex-M3 runs averaging and edge-detection algorithms in real time, while the 120-BGA exposes 93 GPIO for digital inputs and relay-driving outputs. The -40 to +85 C operating range suits IP20 cabinet environments, and the 1.98-3.8 V supply accepts 24 V -> 3.3 V step-down converters.
Recomendado
Connected Lighting Controller
Connected LED drivers need a low-power MCU for color mixing, scene storage, and protocol handling (Zigbee, BLE, or DALI). The EFM48DM895F256G - the EFM32LG895F256G's 256 kB Flash holds DALI-2 and Zigbee stack payloads, while its 32 kB RAM buffers scene frames. The 12-bit ADC reads ambient light and potentiometers, and 93 GPIO supports multiple PWM-driven LED channels. Deep-sleep current of ~1 µA keeps standby power below 0.5 W to meet EU Ecodesign rules.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EFM32LG895F256G — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EFM32LG895F128G-F-BGA120 | EFM32GG895F512G-E-BGA120 | EFM32LG295F256G-BGA120 | EFM32LG895F256G-F-BGA120R | EFM32LG895F256G-E-BGA120 |
|---|---|---|---|---|---|---|
| Package | 120-BGA (7x7 mm) | 120-BGA (7x7 mm) - same | 120-BGA (7x7 mm) - same | 120-BGA (7x7 mm) - same | 120-BGA (7x7 mm) - same | 120-BGA (7x7 mm) - same |
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Core | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 |
| Max Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 256 kB | 128 kB | 512 kB | 256 kB | 256 kB | 256 kB |
| RAM | 32 kB | 32 kB | 128 kB | 32 kB | 32 kB | 32 kB |
| GPIO | 93 | 93 | 93 | 93 | 93 | 93 |
| Supply Voltage | 1.98-3.8 V | 1.98-3.8 V | 1.98-3.8 V | 1.98-3.8 V | 1.98-3.8 V | 1.98-3.8 V |
Principais diferenciais
- Most memory-rich Leopard Gecko in BGA120 (vs EFM32LG895F128G-F-BGA120)
- Lower power than Giant Gecko for cost-sensitive designs (vs EFM32GG895F512G-E-BGA120)
- Full peripheral set vs cost-down variant (vs EFM32LG295F256G-BGA120)
Notas de projeto
The EFM32LG895F256G ships in EM0 (active) at ~23 µA/MHz, EM1 (sleep) at ~45 µA, EM2 (deep sleep) at ~1.0 µA with RTC, and EM3 (stop) at ~0.5 µA with no RAM retention. For coin-cell designs, target EM4 (shutdown) between transmissions and wake via a timer or external interrupt. According to Silicon Labs energyAware Designer, average current is dominated by wake interval and active-mode duration; 1 ms active every 1 s at 48 MHz yields roughly 60 µA average.
Decoupling: place one 100 nF X7R 0402 capacitor per Vdd pin group and a shared 4.7 µF X5R bulk capacitor within 5 mm of the BGA. The 120-BGA has a 0.65 mm pitch; use NSMD pads with 0.4 mm drill and 0.4 mm trace width per Silicon Labs reference layout. Keep the 32.768 kHz crystal traces short (<5 mm) and guarded by ground to limit jitter.
Do not assume GPIO are 5 V tolerant - the EFM32LG895F256G I/O are 3.3 V only, and over-voltage can latch-up. Use a level translator (e.g., TXS0108E) when interfacing 5 V peripherals. Also, when entering EM4 the debug port is lost; keep SWD connected or provide a wake source. According to Silicon Labs errata, early rev A BGA120 parts had a USB D+ pull-up issue fixed in rev B.
Informações de conformidade
RoHS and halogen-free per Silicon Labs environmental compliance page. Not AEC-Q100 qualified - the EFM32LG family targets commercial/industrial IoT, not automotive.
