EFM32LG895F256G-F-BGA120 - 32-bit ARM Cortex-M3 MCU 256KB Flash | Silicon Labs
料号： EFM32LG895F256G-F-BGA120 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $9.1 | $91.00 |
| 100 | $8.2 | $820.00 |
| 500 | $7.55 | $3,775.00 |
| 1,000 | $6.8 | $6,800.00 |
EFM32LG895F256G-F-BGA120 概述
A microcontroller (MCU) is a single-chip computer containing a processor core, program and data memory, and integrated peripherals such as timers, ADCs, communication interfaces, and GPIO. The ARM Cortex-M3 core belongs to the ARM Cortex-M hierarchy of processors designed for embedded deterministic real-time control, sitting above Cortex-M0/M0+ in performance and below Cortex-M4/M7 in DSP capability. The Leopard Gecko product family is part of the broader Silicon Labs EFM32 (Energy Friendly Microcontroller) 32-bit MCU line, itself a subset of the microcontroller category within the wider semiconductor hierarchy.
Key specifications include 93 digital I/O pins, 4 x 16-bit timer/counters, 12-channel DMA controller, multiple serial interfaces (USART, UART, SPI, I2C, USB), a 12-bit 1 Msps ADC, 2 x 12-bit DAC, and ultra-low standby current as low as 1.1 uA with RTC retention. The architecture supports five energy modes (EM0-EM4) allowing the active core to drop to deep sleep while peripherals such as the ADC, LEUART, or RTC remain operational. Hardware AES-128/256 cryptography and a true random number generator (TRNG) are integrated for secure IoT endpoints.
The Cortex-M3 core delivers 1.25 DMIPS/MHz with single-cycle multiply and hardware divide, paired with a Memory Protection Unit (MPU) and wake-up interrupt controller supporting deterministic sub-microsecond interrupt latency. A peripheral reflex system (PRS) routes peripheral events directly between peripherals without CPU intervention, enabling sensor fusion and energy harvesting circuits that draw essentially zero active CPU current. This autonomous event fabric is a key reason Leopard Gecko parts are selected for wireless sensor nodes and energy-harvesting applications.
Typical applications include IoT wireless sensor nodes, wearable health monitoring devices, smart metering, home automation gateways, industrial control panels, asset tracking, alarm/security panels, and battery-powered instrumentation. The 120-pin BGA package provides 93 GPIO and a wide peripheral mix in a 7x7 mm footprint suitable for compact, cost-optimized boards. The device is also used as the host MCU behind Silicon Labs EFR32 Wireless Gecko radios in combined MCU + radio designs.
When designing with this part, choose the proper operating voltage rail (1.98-3.8 V), place a 1 uF decoupling cap at each VDD pin, and use a low-ERTC crystal to minimize standby current. Software development is supported by Simplicity Studio with energyAware Profiler, providing real-time current consumption visualization across the five energy modes.
This page synthesizes 2026 distributor pricing, BGA-120 cross-references, and energy-mode design notes that go beyond the manufacturer datasheet summary, providing actionable sourcing and engineering guidance for embedded designers.
直接替换替代料： EFM32LG895F256G-F-BGA120 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： EFM32LG895F256G-F-BGA120 （相同外形与封装尺寸） ——差异在于 ADC, Core Architecture, DAC, Operating Temperature, Package.
快速对比工具——选择替代料号进行并排对比：
EFM32LG995F256G-F-BGA120
✅ 直接替换📋 参考替代料（不在目录中）
EFM32LG895F256G-E-BGA120
📋 参考替代料（不在目录中）
EFM32LG895F256G-F-BGA120R
✅ 直接替换📋 参考替代料（不在目录中）
EFM32LG295F256G-E-BGA120
✅ 直接替换📋 参考替代料（不在目录中）
EFM32LG395F256G-E-BGA120
✅ 直接替换📋 参考替代料（不在目录中）
EFM32GG395F1024G-E-BGA120
✅ 直接替换✓ 有现货
$7.14 / 个
查看数据手册 →EFM32LG895F256G-F-BGA120 最大额定值与电气特性
| Core | ARM Cortex-M3 |
| Core Architecture | 32-bit RISC |
| Family | EFM32 Leopard Gecko (EFM32LG) |
| Maximum CPU Frequency | 48 MHz |
| Flash Memory | 256 KB (256K x 8) |
| RAM | 32 KB |
| Operating Voltage | 1.98 V to 3.8 V |
| Digital I/O Pins | 93 |
| 封装 | 120-BGA (7x7 mm) |
| 安装类型 | Surface Mount |
| ADC | 12-bit, 1 Msps |
| DAC | 2 x 12-bit |
| Timers | 4 x 16-bit (plus 16-bit/32-bit RTCC) |
| Communication Interfaces | USART, UART, SPI, I2C, USB |
| DMA Channels | 12 |
| 工作温度 | -40C to +85C (industrial grade) |
| RoHS 状态 | Compliant |
EFM32LG895F256G-F-BGA120 120-bga (7x7 mm) 引脚配置指南
EFM32LG895F256G-F-BGA120（120-bga (7x7 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： EFM32LG895F256G-F-BGA120.
请参阅 数据手册 以查看完整引脚配置。
典型应用
EFM32LG895F256G-F-BGA120 适用于 7 应用s: IoT Wireless Sensor Node, Wearable Health Monitor, Smart Meter / Utility Endpoint, Industrial Control Panel / HMI, Home Automation Gateway, Asset Tracking Device, Battery-Powered Instrumentation.
IoT Wireless Sensor Node
The EFM32LG895F256G-F-BGA120 fits IoT wireless sensor nodes because its Cortex-M3 core delivers enough compute for sensor fusion while EM2 deep-sleep with RTC retention draws as little as 1.1 uA, enabling multi-year coin-cell operation. The peripheral reflex system (PRS) lets ADCs, timers, and the LEUART cooperate without waking the CPU, so temperature, humidity, or motion readings can be acquired and transmitted on schedule with minimal active current. With 256 KB Flash and 32 KB RAM, the part easily runs BLE/Zigbee/Sub-GHz host stacks plus application logic in a 7x7 mm BGA that drops onto space-constrained sensor PCB layouts.
推荐
Wearable Health Monitor
The EFM32LG895F256G-F-BGA120 suits wearable health monitors because its five energy modes and fast 2 us wake-up time allow continuous heart-rate or SpO2 sampling while keeping total system current under 50 uA average. The 12-bit 1 Msps ADC captures PPG or ECG signals with sufficient dynamic range, and the 32 KB RAM buffers sample windows before BLE transmission. The 120-BGA package keeps board area under 50 mm squared, critical for wrist- or patch-form-factor wearables where the Leopard Gecko's integrated AES-128 also secures patient data over the air.
推荐
Smart Meter / Utility Endpoint
The EFM32LG895F256G-F-BGA120 is ideal for smart metering endpoints because its low-energy peripherals (RTC, LEUART, ADC) stay active in EM2 deep-sleep while the CPU is fully off, enabling 10-15 year battery life on lithium primary cells. Hardware AES-128/256 acceleration secures consumption data over wireless M-Bus or LoRaWAN links. The 93 GPIO and dual 12-bit DAC handle metrology front-end IC interfacing, LCD segment driving, and tamper-switch monitoring from the same BGA-120 footprint, simplifying utility meter PCB designs that must fit inside IP54 enclosures.
推荐
Industrial Control Panel / HMI
The EFM32LG895F256G-F-BGA120 handles industrial control panels because its 48 MHz Cortex-M3 drives segmented LCDs, debounces keypad inputs, and runs deterministic control loops with sub-microsecond interrupt latency from the 12-channel DMA and Cortex-M3 NVIC. The 120-BGA package exposes 93 GPIO to drive relays, optocouplers, and status LEDs without external I/O expanders. Wide 1.98-3.8 V supply tolerates 24 V industrial rails stepped down to 3.3 V, while the RTC and watchdog ensure deterministic recovery from brown-out events common on factory floors.
推荐
Home Automation Gateway
The EFM32LG895F256G-F-BGA120 anchors home automation gateways because it runs Zigbee/Z-Wave/Wi-Fi host stacks, application logic, and security handshakes simultaneously within its 256 KB Flash and 32 KB RAM. Hardware AES-128/256 plus a TRNG secure commissioning keys without burdening the CPU. The USB 2.0 full-speed interface (in the 995 sibling) or USART peripherals connect to radio co-processors, while the 120-BGA package fits into compact gateway housings alongside power supplies and RF antennas.
推荐
Asset Tracking Device
The EFM32LG895F256G-F-BGA120 supports battery-powered asset trackers because its EM3 stop mode with RAM retention draws only ~0.6 uA, and the LEUART peripheral wakes the CPU only when a GPS or LoRa modem has data ready. The Cortex-M3 at 48 MHz handles AES-encrypted payload formatting and motion-trigger logic from an external accelerometer via the PRS fabric, without waking the CPU at all. The 120-BGA package fits inside thin tracker housings, and the wide 1.98-3.8 V supply works with both single-cell Li-ion and primary lithium-thionyl chloride chemistries used in long-life trackers.
推荐
Battery-Powered Instrumentation
The EFM32LG895F256G-F-BGA120 is ideal for handheld test instruments because its 12-bit 1 Msps ADC and dual 12-bit DAC provide precise analog signal conditioning for sensor excitation and measurement, while the Cortex-M3 runs calibration routines and USB CDC communication. EM1 sleep at approximately 30 uA with the ADC ready allows instant trigger response without full CPU wakeup. The 120-BGA 7x7 mm footprint enables slim instrument enclosures and the wide 1.98-3.8 V supply supports USB-powered and battery-powered operation from the same hardware.
推荐
推荐产品汇总
工程参考数据： EFM32LG895F256G-F-BGA120 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | EFM32LG995F256G-F-BGA120 | EFM32LG895F256G-E-BGA120 | EFM32LG295F256G-E-BGA120 | EFM32LG395F256G-E-BGA120 | EFM32GG395F1024G-E-BGA120 |
|---|---|---|---|---|---|---|
| Package | 120-BGA (7x7 mm) | 120-BGA (7x7 mm) | 120-BGA (7x7 mm) | 120-BGA (7x7 mm) | 120-BGA (7x7 mm) | 120-BGA (7x7 mm) |
| 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 Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 1 MB |
| RAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 128 KB |
| USB | No | Yes (USB 2.0 FS) | No | No | No | Yes |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) |
| GPIO Count | 93 | 93 | 93 | 93 | 93 | 93 |
| Family | Leopard Gecko (EFM32LG) | Leopard Gecko USB | Leopard Gecko | Leopard Gecko | Leopard Gecko | Giant Gecko (EFM32GG) |
关键差异点
- Lower standby current than higher-tier EFM32GG parts （对比 EFM32GG395F1024G-E-BGA120)
- Lower cost and pin-compatible upgrade path to USB-enabled variant （对比 EFM32LG995F256G-F-BGA120)
- Extended temperature option in same footprint （对比 EFM32LG895F256G-E-BGA120)
设计说明
Estimated: The EFM32LG895F256G-F-BGA120's five energy modes (EM0-EM4) deliver step-wise power savings. EM0 (active) draws approximately 9.2 mA at 48 MHz with all peripherals on, EM1 (sleep with CPU off) drops to ~3.5 mA, EM2 (deep sleep with RTC) to ~1.1 uA, EM3 (stop with RAM retention) to ~0.6 uA, and EM4 (hibernate) to ~0.02 uA. For battery-powered designs, target EM2 as the primary sleep state so RTC, ADC, and LEUART remain wake sources while the CPU and most peripherals are gated off. Wake-up latency from EM2 is approximately 2 us, fast enough for real-time sensor event handling.
Place a 1 uF X5R/X7R ceramic decoupling capacitor within 2 mm of each VDD/VDDIO pin and a 10 uF bulk capacitor near the package. Route the BGA breakout using 0.4 mm trace-and-space with micro-vias on inner layers to escape the 7x7 mm pitch-0.5 mm BGA. Keep crystal traces for HFXTAL/LFXTAL short (under 5 mm), shield them with a ground guard ring, and place load capacitors within 1 mm of the crystal pins to maintain oscillator stability across temperature.
Do not exceed the absolute maximum VDD of 3.8 V; reverse-polarity protection or a TVS diode is recommended for battery-powered designs where the cell could be installed backward. The BGA package is moisture-sensitive (MSL level typically 3 per JEDEC J-STD-020) - bake the parts at 125C for 24 hours before assembly if the sealed package has been open longer than the floor-life allowance. Ensure RESETn is held low during power ramp until VDD reaches 1.98 V minimum to prevent latch-up, and route SWDIO/SWDCLK to a dedicated debug header for field firmware updates.
Estimated: At 48 MHz CPU clock and 12-bit 1 Msps ADC operation, route analog and digital grounds on separate BGA ball rows and stitch them only at the exposed paddle (if present) or at a single point under the IC to prevent digital return currents from injecting noise into analog traces. Place the 12-bit ADC reference decoupling capacitor (1 uF + 0.1 uF) within 3 mm of the VREF pin. USB DP/DM traces (when using the 995 sibling) must be 90-ohm differential with length matching within 150 mil.
合规信息
RoHS and REACH compliant per Silicon Labs product page. Lead-free / halogen-free packaging. Not AEC-Q100 qualified - choose EFM32LG895F256G-E-BGA120 (extended temperature grade) for automotive applications.
