EFM32WG295F256-BGA120 - 48MHz Cortex-M4 256KB Wonder Gecko | Silicon Labs
部品番号: EFM32WG295F256-BGA120 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.48 | $64.80 |
| 100 | $5.76 | $576.00 |
| 500 | $5.18 | $2,590.00 |
| 1,000 | $4.6 | $4,600.00 |
EFM32WG295F256-BGA120 概要
ドロップイン代替品: EFM32WG295F256-BGA120 — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: EFM32WG295F256-BGA120 （同一形状・フットプリント） — 相違点: Core, LCD Controller, Package, Program Memory (Flash).
クイック比較ツール — 並列比較する代替部品を選択:
EFM32WG295F256-BGA120T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EFM32WG295F64-BGA120
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EFM32WG295F128-BGA120
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
EFM32LG295F256G-E-BGA120
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EFM32GG395F1024G-E-BGA120
✅ ドロップイン✓ 在庫あり
$7.14 / 個
データシートを見る →EFM32WG295F256-BGA120 最大定格＆電気的特性
| Core | ARM Cortex-M4F with DSP and FPU |
| CPU Clock Speed | 48 MHz |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 32 KB |
| Supply Voltage (Vcc/Vdd) | 1.85 V to 3.8 V |
| パッケージ | 120-BGA (7x7 mm) |
| 実装タイプ | Surface Mount |
| 動作温度 | -40 C to +85 C (industrial) |
| Hardware AES | Yes (up to 256-bit) |
| Active Current (Run mode) | 211 uA/MHz |
| Sleep Current (Stop mode) | 0.65 uA |
| Peripheral Reflex System | Yes (autonomous peripheral operation) |
| Communication Interfaces | USART, SPI, I2C, I2S, USB, CAN |
| LCD Controller | Yes (segment LCD up to 8x36) |
| RoHS ステータス | Compliant |
EFM32WG295F256-BGA120 120-bga (7x7 mm) ピン配置ガイド
EFM32WG295F256-BGA120 (120-bga (7x7 mm) 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: EFM32WG295F256-BGA120.
詳細は データシート をご参照ください。
主な用途
EFM32WG295F256-BGA120 の用途: 6 件s: Industrial IoT Sensor Nodes, Portable Medical Wearables, Smart Metering Endpoints, Energy-Harvesting Wireless Sensors, Battery-Powered HMI with Segment LCD, Connected Lighting and Building Automation.
Industrial IoT Sensor Nodes
The EFM32WG295F256-BGA120 fits industrial IoT sensor nodes because its 48 MHz Cortex-M4F core delivers DSP-grade throughput for on-sensor analytics while Stop-mode current of 0.65 uA preserves multi-year battery life. The 256 KB Flash comfortably stores LoRaWAN02 or Zigbee stacks plus application code, and the hardware AES-256 accelerator secures wireless payloads without burdening the CPU. The peripheral reflex system lets ADC, and GPIO events wake the MCU autonomously, enabling sub-nano sensors reporting temperature, vibration, or gas concentration. The 1.85V-3.8V supply accepts directly from 3.6V lithium thionyl chloride primary cells common in industrial metering. Source: Silicon Labs EFM32WG data sheet.
おすすめ
Portable Medical Wearables
The EFM32WG295F256-BGA120 is well-suited to portable medical wearables such as continuous glucose monitors, pulse oximeters, and ECG patches where both low power and DSP performance are mandatory. The Cortex-M4F FPU executes heart-rate-detection and motion-cancellation algorithms at 48 MHz while drawing only 211 uA/MHz, and the on-chip 12-bit ADC captures biosignal data autonomously via the peripheral reflex system. Stop-mode current of 0.65 uA with full RAM retention preserves patient data between measurements, enabling 14-30 day battery life on a single CR2032 cell. The integrated LCD controller drives segment displays directly, reducing BOM cost and PCB area. Source: Silicon Labs EFM32WG data sheet.
おすすめ
Smart Metering Endpoints
The EFM32WG295F256-BGA120 supports smart-metering endpoints for electricity, gas, and water utilities that demand both long battery life and on-meter DSP for tamper and leak detection. The Cortex-M4F hardware FPU accelerates RMS and FFT calculations on current/voltage waveforms at 48 MHz, while the hardware AES-256 accelerator secures DLMS/COSEM or wireless M-Bus payloads with minimal CPU overhead. The 1.85V-3.8V supply tolerates direct connection to lithium-thylion chloride primary cells with 20+ year operational life, and the integrated segment LCD controller eliminates the need for an external display IC. Source: Silicon Labs EFM32WG data sheet.
おすすめ
Energy-Harvesting Wireless Sensors
The EFM32WG295F256-BGA120 enables energy-harvesting wireless sensors that operate indefinitely from solar, thermal, or vibration harvesters. The Wonder Gecko's 0.65 uA Stop-mode current and peripheral reflex system allow the MCU to spend >99% of its time in deep sleep, waking only on sensor thresholds or scheduled radio transmissions. The Cortex-M4F core executes compression and AES encryption on harvested bursts without exceeding the available energy budget, and the wide 1.85V-3.8V supply range tolerates variable super-capacitor voltages without burst buffers. The 256 KB Flash stores firmware updates and security keys for the device lifetime. Source: Silicon Labs EFM32WG data sheet.
おすすめ
Battery-Powered HMI with Segment LCD
The EFM32WG295F256-BGA120 drives battery-powered HMI products with segment LCDs such as thermostats, portable instrumentation, and consumer appliances where long battery life and rich display capability are both required. The on-chip LCD controller supports up to 8x36 segments directly, eliminating an external display driver and reducing BOM cost. The Cortex-M4F at 48 MHz handles capacitive-touch scanning, ADC sampling, and UI animation simultaneously, while Stop-mode current of 0.65 uA with RAM retention preserves display and state for instant user response. Source: Silicon Labs EFM32WG data sheet.
おすすめ
Connected Lighting and Building Automation
The EFM32WG295F256-BGA120 serves connected lighting and building automation nodes where wireless control, sensor fusion, and reliable operation across -40 C to +85 C are mandatory. The Cortex-M4F FPU executes lighting-control algorithms such as dimming curves and color-mixing while the peripheral reflex system handles AC zero-cross events in firmware, keeping the firmware reaction time under firmware reaction time. The 256 KB Flash stores wireless firmware updates, and hardware AES-256 secures firmware upgrades over Zigbee or BLE. The 1.85V-3.8V supply accepts directly from regulated LED-driver rails. Source: Silicon Labs EFM32WG data sheet.
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: EFM32WG295F256-BGA120 — 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 | EFM32WG295F256-BGA120T | EFM32WG295F64-BGA120 | EFM32WG295F128-BGA120 | EFM32LG295F256G-E-BGA120 | EFM32GG395F1024G-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 |
| CPU Core | ARM Cortex-M4F @ 48 MHz | ARM Cortex-M4F @ 48 MHz | ARM Cortex-M4F @ 48 MHz | ARM Cortex-M4F @ 48 MHz | ARM Cortex-M3 @ 32 MHz | ARM Cortex-M4F @ 48 MHz |
| Flash | 256 KB | 256 KB | 64 KB | 128 KB | 256 KB | 1024 KB |
| RAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 128 KB |
| Supply Voltage | 1.85V to 3.8V | 1.85V to 3.8V | 1.85V to 3.8V | 1.85V to 3.8V | 1.85V to 3.8V | 1.85V to 3.8V |
| Hardware AES-256 | Yes | Yes | Yes | Yes | No | Yes |
| Stop-Mode Current | 0.65 uA | 0.65 uA | 0.65 uA | 0.65 uA | 1.0 uA (typ) | 1.0 uA (typ) |
| Approx Unit Price (qty 1) | USD 7.20 | USD 7.30 | USD 6.20 | USD 6.70 | USD 6.50 | USD 11.50 |
主な差別化要因
- Cortex-M4F with hardware FPU and DSP at 48 MHz in the same 120-BGA package （vs EFM32LG295F256G-E-BGA120)
- Drop-in 64 KB Flash variant for cost-sensitive designs （vs EFM32WG295F64-BGA120)
- On-board upgrade path to 1 MB Flash / 128 KB RAM Giant Gecko （vs EFM32GG395F1024G-E-BGA120)
- Class-leading Stop-mode current of 0.65 uA （vs EFM32LG295F256G-E-BGA120)
設計ノート
Estimated: at 48 MHz active CPU running sensor code, current is approximately 10.1 mA (211 uA/MHz x 48 MHz). For coin-cell applications, enable the energy mode EM2 (deep sleep) wherever possible - Stop-mode current drops to 0.65 uA per the EFM32WG data sheet, allowing a CR2032 cell to power the MCU for years if the duty cycle is kept below 0.1%. Use the peripheral reflex system to wake on ADC, GPIO, or timer events autonomously without the CPU.
The 120-BGA (7x7 mm) package uses 0.5 mm ball pitch and requires NSMD (non-solder-mask-defined) pads with via-in-pad or tented-via escape for reliable reflow. Place four-layer PCB stack-up with continuous GND plane beneath the BGA to provide thermal spreading and reference for high-speed USB signals. Decouple each VDD/VDD_DCDC pair with 100 nF X7R plus 4.7 uF X5R ceramic within 2 mm of the balls per Silicon Labs reference design AN0009.
Route the differential USB DP/DM pair as 90 ohm impedance matched traces under 25 mm length with no splits in the GND reference plane. Isolate the 32 kHz crystal XTAL traces from any high-frequency switching signals, and guard the analog AVDD rail with ferrite beads plus pi-filter (10 uF / 100 nF / 10 uF) to keep ADC SNR above 70 dB. Use the Silicon Labs Simplicity Studio hardware config tool to generate a reference design layout for the BGA-120.
Do not program the 256 KB Flash with code targeting the 64 KB EFM32WG295F64-BGA120 variant - verify the linker script and linker symbol addresses match the target's Flash size. Do not enable the LCD controller when no segment LCD is connected - the segment pins remain configured as outputs and can source current. Do not skip the brown-out detector configuration; without it, an undervoltage event during Flash write can corrupt the program memory permanently.
When using the hardware AES-256 accelerator, ensure that DMA channels for AES I/O do not share priority with high-frequency ADC sampling - the AES accelerator can stall the AHB bus for 20-40 cycles per 16-byte block, which can cause ADC sample jitter. Use the peripheral reflex system to buffer crypto operations away from time-critical interrupts. The Wi-Fi LTE or BLE coexistence library from Simplicity Studio handles priority scheduling automatically.
コンプライアンス情報
RoHS and REACH compliance per Silicon Labs product page. Not AEC-Q100 qualified - this part targets industrial and consumer markets, not automotive. Lead-free and halogen-free packaging confirmed via Silicon Labs material declaration.
