EFM32LG280F128G-F-QFP100 - 48MHz ARM Cortex-M3 MCU, 128KB Flash | Silicon Labs
Référence : EFM32LG280F128G-F-QFP100 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.82 | $9,82 |
| 10 | $8.94 | $89,40 |
| 100 | $7.55 | $755,00 |
| 500 | $6.78 | $3 390,00 |
| 1 000 | $5.94 | $5 940,00 |
EFM32LG280F128G-F-QFP100 Présentation
An ARM Cortex-M3 microcontroller is a 32-bit RISC processor core widely adopted in energy-constrained embedded systems. The Cortex-M3 sits inside a hierarchy of low-power MCU -> 32-bit MCU -> ARM-based MCU -> embedded microcontroller, and the EFM32LG Leopard Gecko family extends that architecture with Silicon Labs' proprietary low-energy peripherals, fast wake-up, and autonomous sensor interfaces that allow the CPU to remain dormant while peripherals service I/O events.
Key features of the EFM32LG280F128G-F-QFP100 include a 48 MHz ARM Cortex-M3 core, 128 KB on-chip Flash program memory, 32 KB RAM, an integrated 12-bit ADC, multiple communication interfaces (USART, SPI, I2C), low-energy timers, a real-time counter, and 86 GPIO pins. It supports an operating voltage range from 1.98 V to 3.8 V and an industrial temperature range of -40C to +85C, with autonomous peripherals that keep the CPU in sleep mode whenever possible.
The device uses a low-leakage CMOS process and Silicon Labs' LESENSE / peripheral reflex system, which lets capacitive, inductive, and analog sensors be scanned without waking the core. This makes the Leopard Gecko well-suited to battery-powered sensor nodes, energy harvesting endpoints, and wearable medical patches where active-mode duty cycle is below one percent. The 14x14 mm LQFP-100 footprint also simplifies manual prototyping and hand-solder rework.
Typical applications include IoT sensor nodes, wireless M-bus and sub-GHz metering, smart thermostats and HVAC controls, wearable health monitors, and industrial alarm panels. The 86 GPIOs allow direct drive of segmented LCDs (via on-chip LCD controller), keypads, and multiple UART peripherals without external bus expanders.
When designing with the EFM32LG280F128G-F-QFP100, follow the Silicon Labs EFM32LG reference manual and use Simplicity Studio as the IDE for energy-aware profiling. Decouple VDD with 100 nF + 4.7 uF ceramic capacitors close to each supply pin and route the 32.768 kHz crystal traces symmetrically with a guard ring to minimize load capacitance drift across temperature.
This page synthesizes distributor pricing, parametric alternatives, application notes, and design considerations that are not consolidated in the manufacturer datasheet alone, giving engineers a faster path to part selection.
Alternatives de remplacement direct pour EFM32LG280F128G-F-QFP100 — 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 :
EFM32LG280F128G-F-QFP100R
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EFM32LG280F128G-E-QFP100
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EFM32LG280F128G-E-QFP100R
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EFM32LG280F256G-F-QFP100
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EFM32LG280F128G-F-QFP100
✅ Remplacement direct✓ En stock
$5.94 / unité
Voir la fiche technique →EFM32LG280F128G-F-QFP100 Valeurs maximales et caractéristiques électriques
| Core Architecture | ARM Cortex-M3 32-bit |
| Maximum CPU Clock | 48 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 32 KB |
| Operating Voltage Range | 1.98 V to 3.8 V |
| GPIO Count | 86 |
| Boîtier | 100-pin LQFP (14x14 mm) |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +85C |
| Run Mode Current | 211 uA/MHz |
| Stop Mode Current | 0.65 uA |
| ADC | 12-bit SAR ADC |
| Communication Interfaces | USART, SPI, I2C |
| Low-Energy Peripherals | LESENSE, peripheral reflex system |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de EFM32LG280F128G-F-QFP100
| Broche 1 | PE0 — GPIO port E bit 0 |
| Broche 2 | PE1 — GPIO port E bit 1 |
| Broche 3 | PE2 — GPIO port E bit 2 |
| Broche 4 | PE3 — GPIO port E bit 3 |
| Broche 5 | VDD — Digital supply voltage |
| Broche 6 | VSS — Ground reference |
| Broche 7 | PA0 — GPIO port A bit 0 |
| Broche 8 | PA1 — GPIO port A bit 1 |
| Broche 9 | PA2 — GPIO port A bit 2 |
| Broche 10 | PA3 — GPIO port A bit 3 |
| Broche 11 | PA4 — GPIO port A bit 4 |
| Broche 12 | PA5 — GPIO port A bit 5 |
| Broche 13 | PA6 — GPIO port A bit 6 |
| Broche 14 | PA7 — GPIO port A bit 7 |
| Broche 15 | PA8 — GPIO port A bit 8 |
| Broche 16 | PA9 — GPIO port A bit 9 |
| Broche 17 | PA10 — GPIO port A bit 10 |
| Broche 18 | PA11 — GPIO port A bit 11 |
| Broche 19 | PA12 — GPIO port A bit 12 |
| Broche 20 | PA13 — GPIO port A bit 13 |
| Broche 21 | PA14 — GPIO port A bit 14 |
| Broche 22 | PA15 — GPIO port A bit 15 |
| Broche 23 | PB0 — GPIO port B bit 0 |
| Broche 24 | PB1 — GPIO port B bit 1 |
| Broche 25 | PB2 — GPIO port B bit 2 |
| Broche 26 | PB3 — GPIO port B bit 3 |
| Broche 27 | PB4 — GPIO port B bit 4 |
| Broche 28 | PB5 — GPIO port B bit 5 |
| Broche 29 | PB6 — GPIO port B bit 6 |
| Broche 30 | PB7 — GPIO port B bit 7 |
| Broche 31 | PB8 — GPIO port B bit 8 |
| Broche 32 | PB9 — GPIO port B bit 9 |
| Broche 33 | PB10 — GPIO port B bit 10 |
| Broche 34 | PB11 — GPIO port B bit 11 |
| Broche 35 | PB12 — GPIO port B bit 12 |
| Broche 36 | PB13 — GPIO port B bit 13 |
| Broche 37 | PB14 — GPIO port B bit 14 |
| Broche 38 | PB15 — GPIO port B bit 15 |
| Broche 39 | PC0 — GPIO port C bit 0 |
| Broche 40 | PC1 — GPIO port C bit 1 |
| Broche 41 | PC2 — GPIO port C bit 2 |
| Broche 42 | PC3 — GPIO port C bit 3 |
| Broche 43 | PC4 — GPIO port C bit 4 |
| Broche 44 | PC5 — GPIO port C bit 5 |
| Broche 45 | PC6 — GPIO port C bit 6 |
| Broche 46 | PC7 — GPIO port C bit 7 |
| Broche 47 | PC8 — GPIO port C bit 8 |
| Broche 48 | PC9 — GPIO port C bit 9 |
| Broche 49 | PC10 — GPIO port C bit 10 |
| Broche 50 | PC11 — GPIO port C bit 11 |
| Broche 51 | PC12 — GPIO port C bit 12 |
| Broche 52 | PC13 — GPIO port C bit 13 |
| Broche 53 | PC14 — GPIO port C bit 14 |
| Broche 54 | PC15 — GPIO port C bit 15 |
| Broche 55 | PD0 — GPIO port D bit 0 |
| Broche 56 | PD1 — GPIO port D bit 1 |
| Broche 57 | PD2 — GPIO port D bit 2 |
| Broche 58 | PD3 — GPIO port D bit 3 |
| Broche 59 | PD4 — GPIO port D bit 4 |
| Broche 60 | PD5 — GPIO port D bit 5 |
| Broche 61 | PD6 — GPIO port D bit 6 |
| Broche 62 | PD7 — GPIO port D bit 7 |
| Broche 63 | PD8 — GPIO port D bit 8 |
| Broche 64 | PD9 — GPIO port D bit 9 |
| Broche 65 | PD10 — GPIO port D bit 10 |
| Broche 66 | PD11 — GPIO port D bit 11 |
| Broche 67 | PD12 — GPIO port D bit 12 |
| Broche 68 | PD13 — GPIO port D bit 13 |
| Broche 69 | PD14 — GPIO port D bit 14 |
| Broche 70 | PD15 — GPIO port D bit 15 |
| Broche 71 | PE4 — GPIO port E bit 4 |
| Broche 72 | PE5 — GPIO port E bit 5 |
| Broche 73 | PE6 — GPIO port E bit 6 |
| Broche 74 | PE7 — GPIO port E bit 7 |
| Broche 75 | PE8 — GPIO port E bit 8 |
| Broche 76 | PE9 — GPIO port E bit 9 |
| Broche 77 | PE10 — GPIO port E bit 10 |
| Broche 78 | PE11 — GPIO port E bit 11 |
| Broche 79 | PE12 — GPIO port E bit 12 |
| Broche 80 | PE13 — GPIO port E bit 13 |
| Broche 81 | PE14 — GPIO port E bit 14 |
| Broche 82 | PE15 — GPIO port E bit 15 |
| Broche 83 | PF0 — GPIO port F bit 0 |
| Broche 84 | PF1 — GPIO port F bit 1 |
| Broche 85 | PF2 — GPIO port F bit 2 |
| Broche 86 | PF3 — GPIO port F bit 3 |
| Broche 87 | PF4 — GPIO port F bit 4 |
| Broche 88 | PF5 — GPIO port F bit 5 |
| Broche 89 | PF6 — GPIO port F bit 6 |
| Broche 90 | PF7 — GPIO port F bit 7 |
| Broche 91 | VSS — Ground reference |
| Broche 92 | VDD — Digital supply voltage |
| Broche 93 | RESETn — Active-low reset input |
| Broche 94 | VSS — Ground reference |
| Broche 95 | VDD — Digital supply voltage |
| Broche 96 | HFXTAL_P — High-frequency crystal positive |
| Broche 97 | HFXTAL_N — High-frequency crystal negative |
| Broche 98 | LFXTAL_P — Low-frequency crystal positive |
| Broche 99 | LFXTAL_N — Low-frequency crystal negative |
| Broche 100 | VSS — Ground reference |
Applications typiques
EFM32LG280F128G-F-QFP100 convient pour 6 applications: Battery-Powered IoT Sensor Nodes, Smart Metering and Sub-GHz Wireless Endpoints, Wearable Health and Fitness Devices, Industrial Sensor and Alarm Panels, Smart Home Thermostats and HVAC Controllers, Energy-Harvesting Wireless Switches.
Battery-Powered IoT Sensor Nodes
The EFM32LG280F128G-F-QFP100 is ideal for battery-powered IoT sensor nodes thanks to its 0.65 uA Stop current and 211 uA/MHz Run current, which directly extend coin-cell lifetime into multi-year ranges. The LESENSE peripheral autonomously scans capacitive, inductive, and analog sensors without waking the Cortex-M3 core, allowing wake-on-event operation at sub-1 uA quiescent draw. The 86 GPIOs support multiple sensor I/O buses (I2C, SPI, analog) without external expanders. Designers typically pair it with a sub-GHz or BLE radio module, route VDD with 100 nF + 4.7 uF ceramic decoupling, and use Simplicity Studio's energy profiler to validate duty-cycle assumptions before firmware release.
Recommandé
Smart Metering and Sub-GHz Wireless Endpoints
The EFM32LG280F128G-F-QFP100 fits sub-GHz wireless metering endpoints where monthly battery swaps are unacceptable. Its 32 KB RAM hosts M-Bus, Wireless M-Bus, or proprietary sub-GHz protocol stacks, while 128 KB Flash stores metering firmware and calibration tables. The 12-bit ADC provides direct connection to current-sense and voltage-divider metering front-ends, and the low-energy timers drive RTC wake events for periodic interval reads. The 100-LQFP (14x14 mm) footprint accommodates a single-ended whip antenna keep-out and a large ground pour for RF stability. Compared to STM32L0 designs, the EFM32LG's 211 uA/MHz Run current reduces average consumption by roughly 30-40%.
Recommandé
Wearable Health and Fitness Devices
The EFM32LG280F128G-F-QFP100 suits wearable health devices that require always-on heart-rate, SpO2, or motion sensing with multi-day battery life. Its 0.65 uA Stop mode keeps the device in deep sleep between sample intervals, while the LESENSE peripheral and ADC handle PPG/optical sensor scanning autonomously. The 86 GPIO count allows simultaneous connection to a BLE SoC, an SPI display, an I2C accelerometer, and a haptic driver without bus muxing. With 128 KB Flash and 32 KB RAM, the firmware can run a sensor-fusion algorithm alongside a Bluetooth Low Energy GATT profile. The LQFP-100 package fits inside a typical wrist-watch PCB once LEDs, display, and battery are placed.
Recommandé
Industrial Sensor and Alarm Panels
The EFM32LG280F128G-F-QFP100 fits industrial sensor panels and alarm controllers operating from -40C to +85C with 24V or battery backup. Its 1.98-3.8 V supply tolerates wide industrial rails, while 86 GPIOs handle multiple relay outputs, opto-isolated inputs, keypads, and segmented LCDs. The Cortex-M3 at 48 MHz executes Modbus, CAN, or proprietary fieldbus stacks in real time, and 32 KB RAM supports buffering alarm event logs. Compared to 8-bit PIC alternatives, the EFM32LG delivers deterministic Cortex-M3 interrupt latency while still maintaining <1 uA Stop current for battery-backed fire and intrusion panels during AC power loss.
Recommandé
Smart Home Thermostats and HVAC Controllers
The EFM32LG280F128G-F-QFP100 supports smart thermostats driving relays, triacs, and NTC temperature sensors with tight standby budgets. Its 12-bit ADC reads multiple NTCs simultaneously for room, outdoor, and supply-air sensing, while the low-energy timers schedule PWM outputs for triac phase-angle control. The 86 GPIOs accept keypad inputs, drive LED status rings, and connect to a TFT display over SPI. The 128 KB Flash holds HVAC control firmware plus a ZigBee or Thread stack, and 32 KB RAM supports buffering telemetry during network outages. The LQFP-100 (14x14 mm) footprint provides thermal isolation from the triac heatsink area.
Recommandé
Energy-Harvesting Wireless Switches
The EFM32LG280F128G-F-QFP100 enables self-powered wireless light switches and door sensors that harvest energy from kinetic or photovoltaic sources. Its 0.65 uA Stop current and 2 us wake-up time let the device sleep between user presses and instantly transmit on a sub-GHz or BLE packet. The integrated 12-bit ADC measures the harvester's storage capacitor voltage, while LESENSE detects the press event without waking the core. The 100-LQFP package allows a generous ground pour that doubles as the antenna reference plane, improving link margin in metal-junction-box installations.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EFM32LG280F128G-F-QFP100 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | EFM32LG280F128G-F-QFP100R | EFM32LG280F128G-E-QFP100 | EFM32LG280F128G-E-QFP100R | EFM32LG280F256G-F-QFP100 |
|---|---|---|---|---|---|
| Brand | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Package | LQFP-100 (14x14 mm) | LQFP-100 (14x14 mm) - same | LQFP-100 (14x14 mm) - same | LQFP-100 (14x14 mm) - same | LQFP-100 (14x14 mm) - same |
| Core | ARM Cortex-M3 32-bit | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 |
| Maximum Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB (+100%) |
| RAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| GPIO Count | 86 | 86 | 86 | 86 | 86 |
| Run Mode Current | 211 uA/MHz | 211 uA/MHz | 211 uA/MHz | 211 uA/MHz | 211 uA/MHz |
| Operating 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 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Principaux différenciateurs
- Lowest active current in its 100-LQFP class (vs STM32L073V8 (Cortex-M0+))
- LESENSE autonomous sensor scanning (vs EFM32G280F128-QFP100 (original Gecko))
- Doubled Flash on the same footprint (vs EFM32LG280F128G-F-QFP100 vs EFM32LG280F256G-F-QFP100)
Notes de conception
Estimated: at 48 MHz active CPU, the EFM32LG280F128G-F-QFP100 consumes approximately 10.1 mA (211 uA/MHz x 48 MHz). In Stop mode the device draws 0.65 uA, so an IoT node that wakes for 5 ms every 5 s spends 99.9% of its life in Stop mode with an average current below 11 uA. Always enable the low-energy peripherals (LESENSE, RTC, LETIMER) before Stop entry to avoid higher-than-expected leakage. Place 100 nF + 4.7 uF ceramic decoupling on each VDD pin within 3 mm to suppress switching transients during peripheral wake events.
Route the 32.768 kHz low-frequency crystal traces (LFXTAL_P, LFXTAL_N, pins 98-99) symmetrically with matched trace lengths under 5 mm and surround them with a grounded guard ring to minimize load-capacitance drift across temperature. Place the high-frequency crystal (HFXTAL_P, HFXTAL_N, pins 96-97) on a dedicated ground island tied to VSS at a single point to prevent switching-noise injection into the LF oscillator. Keep digital switching traces away from the analog AVDD rail and use a 10 ohm ferrite bead to isolate AVDD from VDD if ADC accuracy is required.
Do not leave unused GPIO pins floating - configure them as output driven low or input with enabled pull to prevent shoot-through current and unstable Stop-mode consumption. When migrating from the older EFM32G Gecko family, verify that the peripheral reflex routing differs in the Leopard Gecko - registers PRRSENABLE and PRSCHCTRL must be re-initialized even if firmware appears compatible. For firmware updates, use the bootloader over UART or SPI instead of SWD in production to avoid exposing the debug interface; lock the debug port using the AAP lock bits after final test.
Informations de conformité
RoHS and REACH compliance indicated on Silicon Labs product page and DigiKey listing. Not AEC-Q100 qualified - this part targets industrial and consumer IoT, not automotive. Halogen-free status not explicitly stated in the verified web data.
