EFM32LG230F256G-E-QFN64R - 48MHz ARM Cortex-M3 256KB Flash MCU | Silicon Labs
料号： EFM32LG230F256G-E-QFN64R ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $9.1 | $91.00 |
| 100 | $8.05 | $805.00 |
| 500 | $7.2 | $3,600.00 |
| 1,000 | $6.45 | $6,450.00 |
EFM32LG230F256G-E-QFN64R 概述
An ARM Cortex-M3 microcontroller is a 32-bit RISC processor core from the Cortex-M family of microcontrollers designed by ARM Holdings for embedded applications. The Cortex-M3 implements the Thumb-2 instruction set and includes a Memory Protection Unit, Nested Vectored Interrupt Controller, and optional Wake-up Interrupt Controller. Within the broader taxonomy, the Cortex-M3 belongs to ARM's Cortex-M microcontroller family, which in turn falls under the wider category of 32-bit embedded microcontrollers, mixed-signal semiconductors, and finally integrated circuits. The Leopard Gecko (LG) family extends this core with autonomous low-energy peripherals that can operate while the CPU is asleep.
Key features include a 1.25 DMIPS/MHz core delivering up to 60 MHz operation, 256 KB on-chip Flash with 32 KB RAM, 56 digital I/O pins, and rich analog peripherals including a 12-bit 1 Msps ADC, 12-bit DAC, analog comparator, and low-energy sensor-interface. Active mode current is approximately 211 uA/MHz and deep-sleep (Stop mode) current is as low as 0.65 uA, making it ideal for battery-powered products. Communication interfaces include USB 2.0 full-speed, multiple USART/UART, I2C, SPI, and I2S peripherals. A 2-pin Serial Wire Debug interface and Embedded Trace Module (ETM) are included.
The architecture combines autonomous peripherals such as the Low Energy Sensor Interface (LESENSE), Peripheral Reflex System (PRS), and hardware crypto (AES) so that events can be processed without waking the CPU. This event-driven design is the core innovation behind the EFM32 family and yields 5-10x longer battery life versus conventional microcontrollers in typical IoT duty cycles.
Typical applications include energy-harvesting wireless sensor nodes, battery-powered IoT edge devices, smart metering, wearable health monitors, and industrial alarm panels. The wide 1.98V-3.8V supply range allows direct connection to single-cell lithium, 3V coin cells, or regulated 3.3V rails.
When designing with this device, follow Silicon Labs' recommended decoupling and reference layout for the 9x9 mm QFN64 package; the exposed thermal pad must be soldered to the ground plane for electrical and thermal performance. Use Simplicity Studio and the EFM32 CMSIS-pack to leverage the energyAware Designer profiler for optimizing sleep/wake duty cycles.
This page synthesizes distributor pricing, drop-in Leopard Gecko / Giant Gecko / Pearl Gecko alternates, and practical design notes that are not aggregated in the manufacturer datasheet.
直接替换替代料： EFM32LG230F256G-E-QFN64R ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
EFM32LG230F128G-E-QFN64R
✅ 直接替换📋 参考替代料（不在目录中）
EFM32LG230F64G-E-QFN64R
✅ 直接替换📋 参考替代料（不在目录中）
EFM32LG230F256G-F-QFN64R
✅ 直接替换📋 参考替代料（不在目录中）
EFM32GG230F512G-E-QFN64R
✅ 直接替换📋 参考替代料（不在目录中）
EFM32WG230F256G-E-QFN64R
✅ 直接替换📋 参考替代料（不在目录中）
EFM32LG230F256G-E-QFN64R 最大额定值与电气特性
| Core Architecture | ARM Cortex-M3 (32-bit) |
| Family | EFM32 Leopard Gecko (LG230 series) |
| 最大时钟频率 | 48 MHz |
| Core Performance | 1.25 DMIPS/MHz |
| Program Flash Memory | 256 KB (256K x 8) |
| RAM | 32 KB |
| Supply Voltage (Vdd) | 1.98 V to 3.8 V |
| Digital I/O Pins | 56 |
| 封装 | 64-pin QFN (9x9 mm) with exposed pad |
| ADC | 12-bit, 1 Msps |
| DAC | 12-bit |
| Communication Interfaces | USB 2.0 FS, USART, I2C, SPI, I2S |
| Active Mode Current | 211 uA/MHz |
| Stop Mode (Sleep) Current | 0.65 uA (typical) |
| Debug Interface | Serial Wire Debug (SWD) + Embedded Trace Module (ETM) |
| Hardware Cryptography | AES 128/256-bit accelerator |
| 工作温度范围 | -40 C to +85 C (G grade) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
EFM32LG230F256G-E-QFN64R 64-pin qfn (9x9 mm) with exposed pad 引脚配置指南
EFM32LG230F256G-E-QFN64R（64-pin qfn (9x9 mm) with exposed pad 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： EFM32LG230F256G-E-QFN64R.
请参阅 数据手册 以查看完整引脚配置。
典型应用
EFM32LG230F256G-E-QFN64R 适用于 7 应用s: Battery-Powered Wireless Sensor Nodes, Smart Metering and Utility Endpoints, Wearable Health and Fitness Monitors, Industrial Alarm and Security Panels, USB-Connected Low-Power Peripherals, Energy-Harvesting IoT Edge Nodes, HMI / Display Controller Sub-MCU.
Battery-Powered Wireless Sensor Nodes
The EFM32LG230F256G-E-QFN64R's 0.65 uA Stop current and autonomous LESENSE/PRS peripherals let a sensor node wake on GPIO or sensor events, sample, encrypt, and transmit without waking the CPU - directly extending battery life by 5-10x versus conventional MCUs. The 256 KB Flash accommodates full ZigBee or LoRaWAN stacks while the Cortex-M3 at 48 MHz leaves headroom for over-the-air updates. The 1.98-3.8 V Vdd range supports direct connection to a single-cell Li-ion or 3 V coin cell, eliminating an external LDO in many designs.
推荐
Smart Metering and Utility Endpoints
In smart electricity, gas, or water meter endpoints, the EFM32LG230F256G-E-QFN64R delivers reliable metrology support via its 12-bit 1 Msps ADC and tamper-detect GPIO. AES-128/256 hardware acceleration secures AMR (Automatic Meter Reading) traffic without CPU load, while 32 KB RAM buffers metering frames and firmware-update images. Stop current of 0.65 uA lets the meter sleep between periodic reads, achieving 10+ year battery life on a single D-cell.
推荐
Wearable Health and Fitness Monitors
Wearable heart-rate, SpO2, and step-counter bands rely on the EFM32LG230F256G-E-QFN64R's low-energy sensor interface (LESENSE) to scan optical and motion sensors autonomously while the CPU stays asleep, dramatically extending run time on a tiny LiPo or coin cell. The 12-bit DAC drives haptic feedback, and the Cortex-M3 at 48 MHz runs on-device algorithms for activity classification. The 9x9 mm QFN64 with exposed pad allows compact PCB layouts under 10x10 mm.
推荐
Industrial Alarm and Security Panels
The EFM32LG230F256G-E-QFN64R powers PIR motion, glass-break, and door/window sensor panels where 56 GPIO handle multiple zones and the Cortex-M3 runs the alarm-state machine. AES hardware crypto secures wireless supervision packets, while the 1.98-3.8 V range accepts common 3 V lithium backup batteries. The 0.65 uA Stop current lets the panel sit idle for years on battery, waking on PIR trigger or supervision timer.
推荐
USB-Connected Low-Power Peripherals
With on-chip USB 2.0 full-speed and 56 GPIO, the EFM32LG230F256G-E-QFN64R is a strong fit for USB Human Interface Devices such as low-power keyboards, mice, or HID-class sensors that draw bus power while idle. Cortex-M3 at 48 MHz handles HID class drivers, while 32 KB RAM supports small HID/report buffers. Stop current is gated by USB suspend, satisfying USB 2.0 low-power suspend budgets.
推荐
Energy-Harvesting IoT Edge Nodes
Energy-harvesting designs (solar, thermal, vibration) target average currents in the single-digit uA range - exactly what the EFM32LG230F256G-E-QFN64R delivers in Stop mode (0.65 uA) plus brief active bursts at 211 uA/MHz. The Cortex-M3 + 256 KB Flash is enough to run BLE/ZigBee or proprietary sub-GHz stacks with on-device processing (edge AI), while AES hardware secures transmitted data. The wide Vdd range tolerates a harvested supply feeding a small supercap or Li-ion reservoir.
推荐
HMI / Display Controller Sub-MCU
Used as a sub-MCU next to a touch-panel controller, the EFM32LG230F256G-E-QFN64R scans capacitive or resistive touch I/O, debounces keys, drives LED indicators via timers/PWM, and communicates to the main CPU over SPI or I2C. The Cortex-M3 offloads housekeeping so the main CPU can focus on graphics, while Stop mode ensures the sub-MCU contributes minimal quiescent current. 256 KB Flash supports a small RTOS plus driver libraries.
推荐
推荐产品汇总
工程参考数据： EFM32LG230F256G-E-QFN64R ——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 | EFM32LG230F128G-E-QFN64R | EFM32LG230F64G-E-QFN64R | EFM32LG230F256G-F-QFN64R | EFM32GG230F512G-E-QFN64R | EFM32WG230F256G-E-QFN64R |
|---|---|---|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Package | 64-QFN (9x9) | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same |
| Core | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M4 with FPU |
| Max Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 256 KB | 128 KB | 64 KB | 256 KB | 512 KB | 256 KB |
| RAM | 32 KB | 32 KB | 32 KB | 32 KB | 128 KB | 32 KB |
| Supply Voltage | 1.98 V to 3.8 V | 1.98 V to 3.8 V | 1.98 V to 3.8 V | 1.98 V to 3.8 V | 1.98 V to 3.8 V | 1.98 V to 3.8 V |
| Stop Current (typ) | 0.65 uA | 0.65 uA | 0.65 uA | 0.65 uA | 1.1 uA | 1.1 uA |
| Datasheet Status | E revision | E revision | E revision | F revision (PCN 170926159) | Giant Gecko datasheet | Wonder Gecko datasheet |
关键差异点
- Lowest Stop-mode current in the LG family （对比 EFM32GG230F512G-E-QFN64R)
- Drop-in Flash density alternatives within the same QFN64 footprint （对比 EFM32LG230F128G-E-QFN64R)
- Pin-compatible upgrade path to Cortex-M4 with FPU （对比 EFM32WG230F256G-E-QFN64R)
设计说明
The 64-pin QFN has an exposed thermal pad that MUST be soldered to a ground plane of at least 0.5 square inches of 1 oz copper for electrical and thermal performance. Place 0.1 uF + 4.7 uF decoupling capacitors within 2 mm of each Vdd/Vss pair. Per PCN 170926159 the -F revision corrected the QFN64 pinout diagram; engineers re-laying-out existing -E designs should diff the pin table against the latest datasheet before tape-out.
Estimated: with Vdd = 3.0 V, CPU active at 48 MHz, peripherals idle, the EFM32LG230 draws roughly 211 uA/MHz * 48 MHz = 10.1 mA active. In Stop mode the part drops to 0.65 uA, so a 10 ms wake every 1 s yields an average current of (10 ms * 10.1 mA + 990 ms * 0.65 uA) / 1000 ms ~ 101 uA average. Use the energyAware Profiler in Simplicity Studio to characterize your actual duty cycle before committing to a battery size.
Do not apply Vdd above 3.8 V - the wide supply range is a feature, not a tolerance for 5 V rails. Configure unused GPIO as analog inputs with the input buffer disabled (GPIO_Px_MODEL/DOHALT registers) to minimize Stop-mode leakage. The ARM Serial Wire Debug (SWD) pins (SWDIO/SWCLK) should be pulled up via 10 kohm to Vdd if the debugger is not attached, otherwise floating SWDIO can cause spurious wake-ups.
Keep the 32.768 kHz crystal traces short and symmetric (within 1 mm of XIN/XOUT) and surround them with a ground guard ring to minimize EMI coupling. If USB is used, the D+/D- traces must be 90 ohm differential, length-matched within 150 mil, and routed over a continuous ground reference plane; the VBUS pin requires a 1 uF + 100 nF capacitor pair.
合规信息
RoHS and REACH compliant per Silicon Labs product page. Not AEC-Q100 qualified (industrial G grade, -40C to +85C). For automotive, choose the AEC-Q100-qualified EFM32LG-series variant.
