EFM32LG895F256G - 48MHz ARM Cortex-M3 MCU, 256KB Flash | Silicon Labs
Référence : EFM32LG895F256G ✓ Actif| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour EFM32LG895F256G — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EFM32LG895F128G-F-BGA120
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EFM32GG895F512G-E-BGA120
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EFM32LG295F256G-BGA120
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EFM32LG895F256G-F-BGA120R
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EFM32LG895F256G-E-BGA120
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EFM32LG895F256G Valeurs maximales et caractéristiques électriques
| 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 |
| Boîtier | 120-BGA (7x7 mm) |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +85C |
| USB | Yes (USB 2.0 Full-Speed) |
| AES Hardware Accelerator | Yes |
| Statut RoHS | Compliant |
Guide de configuration des broches du EFM32LG895F256G 120-bga (7x7 mm)
Configuration des broches du EFM32LG895F256G (boîtier 120-bga (7x7 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 EFM32LG895F256G.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
EFM32LG895F256G convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EFM32LG895F256G — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- 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)
Notes de conception
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.
Informations de conformité
RoHS and halogen-free per Silicon Labs environmental compliance page. Not AEC-Q100 qualified - the EFM32LG family targets commercial/industrial IoT, not automotive.
