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EFM32GG11B420F2048GQ100-B - 72MHz ARM Cortex-M4 MCU 2MB Flash | Silicon Labs
EFM32GG11B420F2048GQ100-B

EFM32GG11B420F2048GQ100-B - 72MHz ARM Cortex-M4 MCU 2MB Flash | Silicon Labs

The Silicon Labs EFM32GG11B420F2048GQ100-B is an ARM Cortex-M4 microcontroller from the EFM32 Giant Gecko Series 1 family, featuring a 32-bit processor core running at up to 72 MHz with DSP instruction support and a single-precision Floating Point Unit (FPU). It integrates 2 MB (2048 kB) of Flash and 512 kB of RAM, includes 83 digital I/O pins, 7× 16-bit timer/counters, USB, LCD controller, and a hardware cryptographic engine (AES, ECC, SHA, TRNG) in a 100-pin TQFP (14×14 mm) package. An ARM Cortex-M4 microcontroller is a 32-bit RISC processor core designed for embedded systems that require deterministic real-time response, low power consumption, and digital signal processing. The Giant Gecko family extends this with Silicon Labs' energy-friendliness techniques: 80 µA/MHz active current (EM0), 2.1 µA EM2 Deep Sleep current with 16 kB RAM retention and RTCC running, fast wake-up times, and a flexible Energy Management System (EMU). These characteristics position the part within the broader category of low-power 32-bit microcontrollers alongside competing Cortex-M4/M4F parts from STMicroelectronics, NXP, and Microchip. Key differentiating features include crystal-free low-energy USB, 5 V tolerant GPIO, robust capacitive touch sense, a Memory Protection Unit (MPU), Wake-up Interrupt Controller (WIC), and footprint compatibility with select EFM32 packages that simplify migration. The integrated peripheral reflex system and low-energy peripherals enable autonomous operation without CPU intervention, extending battery life in energy-harvesting and IoT applications. The part operates from 1.8 V to 3.6 V and supports the industrial temperature range of -40°C to +85°C. With 2048 kB of Flash and 512 kB of RAM, it is the highest-memory variant of the GG11 family and is suitable for complex GUI stacks, wireless protocol stacks (Zigbee, Thread, BLE co-processors), asset tracking firmware, and industrial HMI designs that demand both graphics and connectivity. Typical applications include IoT edge nodes, smart metering, building automation, industrial control panels with LCD, USB peripherals, and portable medical devices. The combination of USB, LCD, and hardware crypto on a single die enables compact, BOM-optimized designs. When designing with this MCU, allocate the 83 GPIO pins across your peripheral set early in the design phase; ensure the 1 µF + 100 nF decoupling pair is placed within 3 mm of the VDD pins, and route the USB DP/DM pair with 90 Ω differential impedance. Use Simplicity Studio and the Hardware Configurator tool to assign peripherals to pins and generate production-ready initialization code. This page synthesizes distributor pricing, drop-in GG11 alternatives, and practical design notes not found in the manufacturer datasheet to help engineers select and qualify the part faster.

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EFM32GG11B520F2048IM64-B - 72MHz ARM Cortex-M4 MCU 2MB Flash
EFM32GG11B520F2048IM64-B

EFM32GG11B520F2048IM64-B - 72MHz ARM Cortex-M4 MCU 2MB Flash

Silicon Labs EFM32GG11B520F2048IM64-B is a 32-bit microcontroller IC 36-A 32-bit ARM Cortex-M4 Giant Gecko S1 microcontroller running at 72 MHz, integrating 2 MB (2M x 8) of flash and 512 kB of RAM in a 64-pin QFN (9x9) package. It supports 1.8V to 3.8V supply, 53 digital I/O pins, 7 16-bit timer/counters, and energy-aware peripherals including LESENSE, IADC, and hardware crypto. The Giant Gecko family is engineered for ultra-low-power applications with fast wake-up times and energy-saving modes. An ARM Cortex-M4 microcontroller (MCU) is a 32-bit microcontroller unit based on the ARM Cortex-M4 processor core with DSP instructions and optional FPU, offering deterministic real-time performance at MHz clock speeds while consuming only tens of microamps per MHz in active mode. It fits within the hierarchy: Cortex-M4 MCU -> ARM-based microcontroller -> embedded microcontroller -> semiconductor. Battery voltage is critical for portable, energy-sensitive designs where sleep current dominates battery life. Key features include 2 MB flash, 512 kB RAM, 53 GPIO, hardware AES/SHA crypto accelerator, segment LCD controller, USB, CAN, EBI and other peripherals, 39 C/W thermal resistance (typical QFN-64), -40C to +125C industrial temperature grade, and multiple low-energy modes down to sub-uA sleep currents. The B-grade part variant features extended industrial temperature range and is supplied on tape and reel. The architecture combines ARM Cortex-M4 core with autonomous low-energy peripherals (LETIMER, RTCC, IADC, LESENSE) that operate without waking the CPU. The 2 MB flash supports over-the-air (OTA) firmware updates via dual-bank memory mapping, while the LCD controller enables direct drive of segmented displays without external driver ICs, reducing BOM cost and PCB area. Typical applications include battery-powered IoT sensor nodes, smart energy metering with ESE AMR and LCD displays, industrial HMI panels with capacitive touch, connected lighting with wireless-segment control, and asset tracking with GPS/GNSS. The EFM32GG11B520F2048IM64-B is particularly well-suited to designs that require large memory for firmware/RF stacks while maintaining years of battery life. When designing with this device, ensure adequate decoupling on VDD (1.8-3.8V) with 100 nF ceramic capacitors per supply pin and consider ground plane continuity under the QFN exposed pad for thermal dissipation. Order chips at tape and reel quantities via authorized distributors. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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EFM32GG230F1024G-E-QFN64 - 48MHz ARM Cortex-M3 MCU, 1MB Flash | Silicon Labs
EFM32GG230F1024G-E-QFN64

EFM32GG230F1024G-E-QFN64 - 48MHz ARM Cortex-M3 MCU, 1MB Flash | Silicon Labs

The Silicon Labs EFM32GG230F1024G-E-QFN64 is an ARM Cortex-M3 Giant Gecko microcontroller IC running at 48 MHz with 1 MB (1M x 8) of Flash and 128 KB of RAM, housed in a 64-pin QFN (9x9 mm) package with exposed thermal pad. It is a 32-bit single-core MCU engineered for energy-sensitive applications, offering autonomous peripherals, AES hardware encryption, and rich analog integration while consuming as little as 0.6 uA in Stop (EM2 Deep Sleep) mode and 180 uA/MHz in Run mode. What is a 32-bit low-power microcontroller? A microcontroller (MCU) is a system-on-chip that integrates a CPU core, program memory (Flash), data memory (RAM), and peripherals (timers, ADC, communication interfaces) into a single device. Low-power MCUs extend this concept by including multiple energy modes (Run, Sleep, Stop, EM4 shutoff), fast wake-up times, and peripheral reflex logic that lets timers and sensor interfaces operate without waking the CPU. The EFM32GG Giant Gecko family sits in the hierarchy as: Cortex-M3 MCU -> ARM 32-bit MCU -> low-energy MCU -> embedded microcontroller -> semiconductor IC. Key features include 1024 KB Flash, 128 KB RAM, 56 digital I/O pins, 4 x 16-bit timers, AES-128/256 hardware crypto accelerator, and a peripheral reflex system. The wide supply voltage range of 1.85 V to 3.8 V supports both single-cell Li-ion battery applications and 3.3 V industrial rails, while integrated LDO and DC-DC support enables flexible power tree design with sub-microamp sleep currents critical for battery-powered IoT endpoints. The Giant Gecko architecture pairs the Cortex-M3 core with Silicon Labs' LESENSE, LETIMER, RTCC, and AUTOSELECT peripherals, allowing sensor interfaces and GPIO events to operate autonomously while the CPU remains in deep sleep. Hardware AES acceleration and a True Random Number Generator (TRNG) target secure connected applications. The 9x9 mm QFN-64 footprint with exposed pad provides 56 usable GPIO - generous for a small-outline MCU package. Typical applications include battery-powered IoT sensors, smart energy metering, wireless sensor nodes, industrial HMI controllers, and home automation gateways where years of battery life and rich peripheral integration are required. When designing with this part, place a 1 uF X7R bypass capacitor adjacent to each VDD pin and a 4.7 uF bulk capacitor near the package. The QFN-64 thermal pad must be soldered to a continuous ground pour for both electrical ground and thermal dissipation (theta_JA typically 28 C/W on a 4-layer JEDEC JESD51-7 board). This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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EFM32GG290F1024-BGA112 - 32-bit ARM Cortex-M3 MCU, 1MB Flash | Silicon Labs
EFM32GG290F1024-BGA112

EFM32GG290F1024-BGA112 - 32-bit ARM Cortex-M3 MCU, 1MB Flash | Silicon Labs

The Silicon Labs EFM32GG290F1024-BGA112 is an ARM Cortex-M3 based 32-bit microcontroller from the Giant Gecko family, integrating 1024 kB of Flash and 128 kB of RAM, with a CPU core capable of up to 48 MHz operation (1.25 DMIPS/MHz). The device is housed in a 112-ball BGA package (10x10 mm) and offers 90 digital I/O pins, making it one of the highest-density members of the EFM32 Giant Gecko line. An ARM Cortex-M3 microcontroller (MCU) is a 32-bit RISC processor core designed for embedded applications that need deterministic real-time behavior, low power consumption, and a Thumb-2 instruction mix that balances code density with computational throughput. Cortex-M3 cores are widely deployed in IoT, sensor hubs, industrial controllers, and human-interface products, and are positioned hierarchically as: ARM Cortex-M3 -> 32-bit MCU -> microcontroller -> semiconductor. The EFM32 Giant Gecko series extends this architecture with Silicon Labs' proprietary low-energy peripherals, fast wake-up time from sleep states, and a peripheral reflex system that lets timers, ADCs, and GPIO events trigger DMA transfers without CPU intervention. Key differentiating features include 1 MB of on-chip Flash and 128 kB of SRAM, hardware AES encryption, a 12-bit ADC, multiple USART/UART/SPI/I2C peripherals, and a 4x16-bit timer/counter array. The 90 GPIO count and 112-ball BGA footprint make it a strong fit for industrial gateways and high-pin-count sensor hubs. The Cortex-M3 core also integrates a Memory Protection Unit (MPU) supporting up to 8 segments and a Wake-up Interrupt Controller for handling interrupts from sleep. Technically, the part operates from a single 1.98 V to 3.8 V supply, is qualified over -40 C to +85 C, and supports an integrated LDO and DC-DC regulator for core power. The energy-friendly design lets the device drop below 1 uA in deep-sleep modes while retaining RTC and interrupt capability, addressing battery-operated applications where both processing power and standby current matter. Typical applications include industrial IoT gateways, smart metering, home and building automation, asset tracking, wireless sensor nodes, security panels, and connected health devices. The 1 MB Flash tier also serves as a host for larger protocol stacks (Thread, ZigBee, BLE via co-processor) where ample code space is required. When designing with the EFM32GG290F1024-BGA112, plan PCB escape routing for the 112-ball BGA carefully - the 0.8 mm ball pitch demands 4 or more PCB layers with microvia stack-ups. Decoupling should follow the datasheet's reference layout, and the debug SWD pins (SWDIO/SWCLK) must be brought out to a standard ARM Cortex debug header for programming. This page synthesizes distributor pricing, drop-in BGA112 alternatives, and practical layout guidance not found in the manufacturer datasheet alone, helping engineers select the right Giant Gecko variant for high-density, low-energy embedded designs.

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EFM32GG330F1024-QFN64 - 48MHz Cortex-M3 Giant Gecko MCU | Silicon Labs
EFM32GG330F1024-QFN64

EFM32GG330F1024-QFN64 - 48MHz Cortex-M3 Giant Gecko MCU | Silicon Labs

The Silicon Labs EFM32GG330F1024-QFN64 is an ARM Cortex-M3 32-bit microcontroller in the Giant Gecko family, delivering up to 48 MHz CPU clock and housed in a 64-pin QFN (9x9 mm) package with exposed thermal pad. The device integrates 1024 kB of flash and 128 kB of RAM, 53 digital I/O pins, and a peripheral set including a USB 2.0 full-speed controller, AES-128/256 hardware crypto accelerator, 4 x 16-bit timers, and a 12-bit ADC. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (flash), working memory (RAM), and a configurable set of analog and digital peripherals. In the taxonomy of embedded silicon, an MCU sits below microprocessors (MPUs, which require external memory) and above general-purpose logic ICs; the Giant Gecko specifically belongs to the energy-friendly EFM32 family, which sits inside the broader Cortex-M3 ecosystem (ARM Cortex-M -> 32-bit MCU -> embedded controller -> semiconductor). Silicon Labs' EFM32 line is known for aggressive low-energy techniques, fast wake-up from sleep, and rich peripherals aimed at battery-powered and energy-harvesting applications. Key features include hardware AES crypto, USB device controller with on-chip transceiver, configurable peripherals routed through Silicon Labs' Peripheral Reflex System (PRS), and a low-energy RTC with calendar mode. The 64-pin QFN package (9x9 mm body, 0.5 mm pitch, exposed pad) provides 53 general-purpose I/Os with configurable push-pull, open-drain, and pull resistors. CoreMark performance is approximately 1.25 DMIPS/MHz, and the energy modes EM0-EM4 enable sub-microamp sleep with <2 microsecond wake-up. Architecturally, the EFM32GG330F1024 pairs a Cortex-M3 core (with MPU, WIC, NVIC) with 1024 kB flash (with cache) and 128 kB SRAM, plus dedicated crypto and DMA blocks. The peripheral reflex system allows peripherals to interact without CPU intervention, freeing the core for application logic. Energy Mode 4 (EM4) shuts down most of the chip but retains a single wake-up pin and RAM retention, achieving the lowest quiescent current in the family. Typical applications include energy-harvesting wireless sensor nodes, USB-powered smart meters, secure connected home gateways, battery-powered industrial sensors, and low-power medical wearables. The 1 MB flash supports over-the-air (OTA) firmware update staging for connected devices requiring field-upgradable code. When designing with this device, route the exposed pad (EP) to a continuous ground pour with multiple vias for thermal dissipation and low-impedance ground return. Decouple VDD and VDDX with 100 nF X7R ceramic caps placed within 2 mm of each supply pin. The QFN package requires precise PCB land pattern and reflow profile per IPC-7351; moisture sensitivity level (MSL) handling per J-STD-033 is required during assembly. This page synthesizes distributor pricing, drop-in same-package alternatives, AEO-optimized FAQ, and practical layout notes not consolidated on the Silicon Labs product page.

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EFM32GG395F1024G-E-BGA120 - 48MHz Cortex-M3 MCU, 1MB Flash | Silicon Labs
EFM32GG395F1024G-E-BGA120

EFM32GG395F1024G-E-BGA120 - 48MHz Cortex-M3 MCU, 1MB Flash | Silicon Labs

The Silicon Labs EFM32GG395F1024G-E-BGA120 is an ARM Cortex-M3 based Giant Gecko microcontroller delivering 48 MHz CPU performance with 1 MB Flash and 128 KB RAM, housed in a 120-ball BGA (7x7 mm) package. It features an integrated USB 2.0 Full-Speed controller, AES encryption engine, hardware cryptographic accelerator, and the patented EFM32 low-energy peripheral architecture. The wide supply range of 1.98 V to 3.8 V supports single-cell Li-ion battery operation and USB-powered designs. A 32-bit microcontroller (MCU) is an integrated processor core, memory, peripherals, and I/O in a single chip. The Cortex-M3 is an ARM core with Thumb-2 instruction set, hardware divide, and deterministic interrupt handling, optimized for embedded deterministic applications. Within the MCU taxonomy it sits under Cortex-M3 -> ARM Cortex-M -> 32-bit MCU -> microcontroller -> semiconductor. The Giant Gecko family further emphasizes high-memory variants (up to 1 MB GB) while preserving the EFM32 ultra-low-power DNA. Key features include 93 digital I/O pins, 4 x 16-bit timer/counter blocks, 12-bit ADC and DAC channels, 4 USART, 2 I2C, 2 USB x Low Voltage, AES-128/256 hardware accelerator, true random number generator, 4 x 16-bit PWM outputs, and a low-energy RTC. The integrated LCD controller supports up to 8 x 36 segments without external drivers. Energy-saving modes deliver a sub-microsecond wake-up time and EM0/EM2/EM3/EM4 modes enabling deep-sleep currents below 1 uA. The debug hardware from Cortex-M3 includes Serial Wire Debug (SWD), Embedded Trace Macrocell (ETM), and Serial Wire Viewer (SWV). Architecturally, the EFM32GG395F1024G-E-BGA120 uses a Cortex-M3 Harvard architecture with separate I-code and D-code buses, 4 GB Flash memory per function, 1 MB single-bank Flash, and peripheral reflex system allowing autonomous peripheral-to-peripheral DMA without CPU intervention. This enables complex power-aware tasks to run while the CPU stays in EM2 sleep. The hardware AES engine performs AES-128/256 encryption in single clock cycles, and the TRNG provides a NIST-compliant entropy source for cryptographic applications. Typical applications include USB HID peripheral, smart energy metering, building automation, smart sensor nodes, industrial control, low-power wireless sensor networks, wearable fitness devices, and battery-powered IoT HVAC controllers. The integrated USB peripheral supports both device and host modes, making the part well suited to USB-equipped IoT devices. The Giant Gecko high-memory configuration (1 MB GB) enables rich HMI interfaces with embedded graphics or USB device stacks. The wide GPIO count of 93 supports multi-segment LCD or keypad-driven products. A common use is a USB dongle for secure token provisioning and key exchange. When designing with this MCU, the BGA-120 package requires careful PCB layout with at least 4 routing layers, controlled-impedance traces for USB DP/DM, and a solid ground plane for analog performance. Use a 1 uF decoupling capacitor per VDD pin, place a 32.768 kHz crystal on the update output, and route the SWD lines (SWDIO/SWDCLK) as a 2-wire debug interface with series-reset 10 kohm pull-up on SWDIO. The exposed thermal pad must be soldered to the PCB for mechanical reliability and thermal dissipation. For USB operation, the VBUS pin requires a 5 V to 3.3 V regulator on the GB85. This page synthesizes distributor pricing, drop-in same-family alternatives, USB peripheral design references, and practical design notes not found in the manufacturer datasheet alone.

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EFM32GG395F1024G-E-BGA120R - 48MHz ARM Cortex-M3 Giant Gecko MCU | Silicon Labs
EFM32GG395F1024G-E-BGA120R

EFM32GG395F1024G-E-BGA120R - 48MHz ARM Cortex-M3 Giant Gecko MCU | Silicon Labs

The Silicon Labs EFM32GG395F1024G-E-BGA120R is a 32-bit ARM Cortex-M3 Giant Gecko microcontroller (MCU) delivering up to 48 MHz core performance with 1 MB Flash and 128 kB RAM, housed in a 120-ball BGA (7x7 mm) package. It integrates USB, AES hardware encryption, and a rich peripheral set designed for energy-sensitive connected applications. The supply voltage range is 1.98 V to 3.8 V and the device supports an operating temperature range of -40 C to +85 C. What is a low-power 32-bit microcontroller? A microcontroller (MCU) is a single-chip computer integrating a CPU core, volatile and non-volatile memory, and programmable peripherals. Low-power MCUs extend this with multiple sleep modes, fast wake-up times, and event-driven peripherals (such as the Peripheral Reflex System on EFM32) that let the CPU stay asleep while peripherals handle I/O. The Giant Gecko family sits in the hierarchy: ARM Cortex-M3 core -> 32-bit MCU -> low-energy MCU -> embedded microcontroller -> semiconductor. This architecture is widely used in battery-powered IoT nodes, sensor hubs, and industrial controls where average current (uA range) and standby time dominate. Key features include 1 MB Flash (1M x 8), 128 kB SRAM, 93 digital I/O pins, four 16-bit timer/counters, two 12-bit ADC and DAC blocks, USB, AES-128/256, and a hardware crypto accelerator. The Giant Gecko line also adds an LCD controller, backup RTC domain with its own voltage regulator, and multiple low-energy peripherals (LETIMER, LESENSE, LEUART, RTC). On-chip peripherals are interconnected through the Peripheral Reflex System (PRS) for hardware-driven, software-free signaling between modules. The EFM32GG395F1024G-E-BGA120R is built on a 90 nm CMOS low-leakage process and uses Silicon Labs' LESENSE, PRS, and energy-management unit to deliver sub-uA sleep current with 2 us wake-up time. This makes the device well suited to interrupt-driven event processing rather than continuous polling. The integrated AES hardware block accelerates encrypted communication without burdening the Cortex-M3 core. Typical applications include IoT edge nodes, USB-connected smart sensors, energy-harvesting wireless sensor hubs, industrial HMI panels with LCD, secure connected medical devices, and building-automation controllers. The Giant Gecko family is broadly used in any design that needs both USB device/host connectivity and low standby power. When designing with this device, allocate sufficient PCB area for BGA fan-out and via-in-pad (the 120-ball 7x7 mm BGA has 0.5 mm pitch) and provide a clean 3.3 V rail with bulk + bypass decoupling per Silicon Labs reference designs. Verify pinout against the manufacturer datasheet, since BGA ball mapping is not interchangeable with QFP variants in the same family. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select and qualify the EFM32GG395F1024G-E-BGA120R for production.

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EFM32HG222F64G-C-QFP48R - 25MHz ARM Cortex-M0+ MCU | Silicon Labs
EFM32HG222F64G-C-QFP48R

EFM32HG222F64G-C-QFP48R - 25MHz ARM Cortex-M0+ MCU | Silicon Labs

The Silicon Labs EFM32HG222F64G-C-QFP48R is an ultra-low-power ARM Cortex-M0+ microcontroller from the Happy Gecko family, delivering 25 MHz core performance with 64 KB Flash and 8 KB RAM in a 48-pin TQFP (7x7 mm) package. It targets USB-enabled, energy-sensitive embedded applications where battery life and rapid wake-up time dominate the design trade-off. An ARM Cortex-M0+ microcontroller (MCU) is a 32-bit reduced instruction set processor core from ARM Holdings, designed for lowest active power and smallest silicon footprint among the Cortex-M family. The Cortex-M0+ sits within a broader hierarchy: ARM Cortex-M -> 32-bit MCU core -> microcontroller -> embedded system-on-chip. The Happy Gecko family extends this baseline with Silicon Labs' proprietary energy modes, autonomous I/O handling, and an integrated USB 2.0 Full-Speed device peripheral, making it well suited to connected sensor nodes and human-interface devices. The EFM32HG222F64G-C-QFP48R operates from a 1.98 V to 3.8 V supply, consumes 127 uA/MHz in Run mode and as little as 0.6 uA in Stop mode (per the Silicon Labs EFM32HG datasheet), and offers 37 digital I/O pins, 3 x 16-bit timers, an ADC, AES accelerator, and integrated USB. The TQFP-48 package (7x7 mm body) supports standard surface-mount assembly and provides 37 usable GPIO signals after USB and ground pins are allocated. Architecturally, the device pairs the Cortex-M0+ core with a low-leakage process node, peripheral reflex system, and a wide range of autonomous peripherals that continue to operate while the core sleeps. This combination allows the MCU to wake on an event, capture data, and return to deep sleep without CPU intervention - a critical capability for coin-cell and energy-harvesting designs. Typical applications include USB human-interface devices such as wireless dongles, HID peripherals, and connected sensors, as well as battery-powered IoT nodes, wearable health monitors, smart metering endpoints, and industrial sensor transmitters. The integrated USB 2.0 Full-Speed device controller removes the cost of an external PHY. When designing with this part, allocate adequate PCB area for the USB DP/DM traces, follow the USB 2.0 impedance guideline of 90 ohms differential, and place the decoupling capacitor network (typically 100 nF + 4.7 uF bulk) within a few millimetres of the VDD pin. The "R" suffix indicates Tape & Reel packaging for high-volume assembly. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical PCB and low-power design guidance that complements the manufacturer datasheet.

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EFM32LG230F256G-E-QFN64 - 48MHz 32-bit ARM Cortex-M3 MCU | Silicon Labs
EFM32LG230F256G-E-QFN64

EFM32LG230F256G-E-QFN64 - 48MHz 32-bit ARM Cortex-M3 MCU | Silicon Labs

The Silicon Labs EFM32LG230F256G-E-QFN64 is an ARM Cortex-M3 based 32-bit Leopard Gecko microcontroller delivering 48 MHz CPU performance with 256 KB Flash and 32 KB RAM in a 64-pin QFN (9x9 mm) package. The device is designed for ultra-low-power embedded applications, consuming as little as 0.65 microampere in Stop mode and 211 microampere/MHz in Run mode, while integrating autonomous peripherals and a hardware 1-wire debug port. Sixty-four general-purpose I/O pins support flexible mixed-signal interfacing for sensors, displays, and communication buses. A microcontroller (MCU) is a single integrated semiconductor device that contains a CPU core, program memory (Flash), working memory (RAM), and a rich set of on-chip peripherals such as timers, ADC/DAC blocks, communication interfaces, and GPIO. Within the broader embedded computing taxonomy, MCUs belong to the system-on-chip hyperplane - integrating compute (control, timing), analog/mem (memory hierarchy), energy efficiency (low-power modes), and connectivity (UART, SPI, I2C, USB) on a single die. The Cortex-M3 core implements the Thumb/Thumb-2 instruction set, features hardware integer divide, jitter, and includes a Nested Vectored Interrupt Controller (NVIC) for deterministic interrupt response. EFM32 Leopard Gecko devices add energy-aware peripherals that can operate autonomously while the CPU is asleep. Key features of the EFM32LG230F256G-E-QFN64 include 256 KB Flash program memory, 32 KB SRAM, low-energy autonomous peripherals, fast wake-up from sleep modes, brown-out detector, and on-chip temperature sensor. Peripheral highlights include four 16-bit timers, multiple USART/SPI/I2C peripherals, a 12-bit ADC, and a hardware AES accelerator. The wide operating voltage range and low-power architecture allow direct battery operation with years of battery life in duty-cycled applications. Typical use cases are wireless sensor nodes, smart meters, home and building automation, asset tracking, fitness and medical wearables, industrial IoT edge nodes, and battery-powered HMI controllers. Selection guidance: choose this part when you need ARM Cortex-M3 ecosystem maturity combined with Silicon Labs' energy-friendly architecture in a moderate-pin-count QFN package.

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EFM32LG230F256G-E-QFN64R - 48MHz ARM Cortex-M3 256KB Flash MCU | Silicon Labs
EFM32LG230F256G-E-QFN64R

EFM32LG230F256G-E-QFN64R - 48MHz ARM Cortex-M3 256KB Flash MCU | Silicon Labs

The Silicon Labs EFM32LG230F256G-E-QFN64R is an ultra-low-power ARM Cortex-M3 32-bit microcontroller in the Leopard Gecko family, featuring 256 KB Flash and 32 KB SRAM, running at up to 48 MHz and packaged in a 64-pin QFN (9x9 mm). It is designed for energy-sensitive applications that need Cortex-M3 performance with sub-microamp sleep current. 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.

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EFM32LG280F128G-F-QFP100 - 48MHz ARM Cortex-M3 MCU, 128KB Flash | Silicon Labs
EFM32LG280F128G-F-QFP100

EFM32LG280F128G-F-QFP100 - 48MHz ARM Cortex-M3 MCU, 128KB Flash | Silicon Labs

The Silicon Labs EFM32LG280F128G-F-QFP100 is a 32-bit ARM Cortex-M3 Leopard Gecko microcontroller running at 48 MHz with 128 KB Flash and 32 KB RAM in a 100-pin LQFP (14x14 mm) package. It targets ultra-low-power embedded applications and consumes as little as 0.65 uA in Stop mode and 211 uA/MHz in Run mode. 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.

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EFM32LG842F256G-F-QFP64 - 256KB Flash ARM Cortex-M3 MCU | Silicon Labs
EFM32LG842F256G-F-QFP64

EFM32LG842F256G-F-QFP64 - 256KB Flash ARM Cortex-M3 MCU | Silicon Labs

The Silicon Labs EFM32LG842F256G-F-QFP64 is a 32-bit ARM Cortex-M3 microcontroller in the energy-efficient EFM32 Leopard Gecko family, offering 256 kB Flash, 32 kB RAM, and a 64-pin TQFP (10x10 mm) package. It runs at up to 48 MHz with a 1.85V to 3.8V supply range and consumes as little as 0.65 uA in Stop mode and 211 uA/MHz in Run mode, making it ideal for battery-powered and energy-sensitive designs. A microcontroller (MCU) is an integrated circuit that combines a processor core, program memory, RAM, and configurable I/O peripherals on a single die, providing a self-contained compute platform for embedded applications. The EFM32LG family is positioned within the broader hierarchy: microcontroller -> embedded processor -> semiconductor IC, and is differentiated by Silicon Labs' Low Energy Technology that uses autonomous peripherals, fast wake-up, and multiple sleep modes to minimize average system power. This category is widely used in IoT, metering, sensor hubs, and human-machine interface (HMI) designs. Key features include 53 digital I/O lines, 4 x 16-bit timer/counters, integrated LCD driver, 12-bit ADC, AES-128 crypto accelerator, and the LESENSE/TIMER/RTC autonomous peripheral set that can wake the CPU only when needed. The device also offers USB, UART, I2C, and SPI interfaces, plus a 16-channel DMA engine and on-chip debugging via SWD/JTAG. The energy-aware design philosophy delivers deterministic interrupt latency with deep-sleep current of approximately 0.65 uA. Architecturally, the EFM32LG842F256G-F-QFP64 uses the industry-standard ARM Cortex-M3 core with Thumb-2 instruction set and hardware divide, paired with Silicon Labs' proprietary peripheral reflex system that allows sensors and timers to operate without CPU intervention. This combination yields responsive event handling at sub-microsecond wake times while preserving battery life in duty-cycled applications. Typical applications include battery-powered IoT nodes, wireless sensor hubs, smart metering, wearable fitness/health devices, industrial sensor front-ends, and low-power human-interface products with LCD displays. The wide operating voltage range and integrated LCD controller make it especially attractive for battery-powered utility meters and portable medical devices. When designing with this part, note that the 64-pin TQFP package requires careful PCB layout to keep analog and digital grounds separate, and decoupling capacitors should be placed within 3 mm of each supply pin. Use Simplicity Studio and the energyAware Profiler to characterize average current across sleep/wake duty cycles. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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EFM32LG880F256G-E-QFP100 - 48MHz ARM Cortex-M3 MCU 256KB | Silicon Labs
EFM32LG880F256G-E-QFP100

EFM32LG880F256G-E-QFP100 - 48MHz ARM Cortex-M3 MCU 256KB | Silicon Labs

The Silicon Labs EFM32LG880F256G-E-QFP100 is a 32-bit ARM Cortex-M3 Leopard Gecko microcontroller delivering up to 48 MHz CPU performance with 32 kB SRAM and 256 kB flash, housed in a 100-pin LQFP (14x14 mm) package. It features an integrated LCD controller, 86 digital I/O pins, four 16-bit timer/counters, and a 12-bit ADC, making it a full-featured ultra-low-power MCU for energy-sensitive human-interface applications. A 32-bit microcontroller (MCU) is an embedded processor that integrates a CPU core, memory, and peripherals onto a single silicon die. Within the embedded computing hierarchy, an MCU occupies the tier below microprocessors - it sacrifices raw clock speed for deterministic real-time behavior, on-chip memory, and ultra-low standby current. ARM Cortex-M3 cores follow the ARMv7-M architecture with Thumb-2 instruction set, hardware divide-divide, and bit-banding for atomic bit manipulation. The Leopard Gecko (EFM32LG) family adds Silicon Labs' proprietary energy-management peripheral set, making the line a derivative of the energy-friendly EFM32 platform originally developed by Energy Micro and now consolidated under the Silicon Labs portfolio. Key features include 0.65 uA deep-sleep current in Stop mode, 211 uA/MHz active current in Run mode, autonomous peripherals that operate in sleep, a hardware AES-128 crypto accelerator, and a low-energy UART that can wake the part on a start bit without CPU intervention. The integrated segmented LCD driver supports up to 8x36 segments and is designed for direct bias of low-power glass displays. Supply voltage spans 1.98 V to 3.8 V from a single rail. Typical applications include battery-powered smart thermostats, wearable fitness bands, electronic shelf labels, remote sensor nodes, and portable medical monitors where years of operation on a coin cell are required. The wide pin-count and LCD interface make it ideal for human-interface end equipment such as industrial HMIs, e-meter displays, and the user-interface panel of home appliances.

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EFM32LG895F256G - 48MHz ARM Cortex-M3 MCU, 256KB Flash | Silicon Labs
EFM32LG895F256G

EFM32LG895F256G - 48MHz ARM Cortex-M3 MCU, 256KB Flash | Silicon Labs

The Silicon Labs EFM32LG895F256G-F-BGA120 is an ultra-low-energy ARM Cortex-M3 microcontroller (MCU) from the Leopard Gecko family, running up to 48 MHz with 256 kB of Flash and 32 kB of RAM in a 120-pin BGA (7x7 mm) package. It provides 93 digital I/O pins, four 16-bit timer/counters, a 12-bit ADC, and a rich set of serial interfaces (USART, SPI, I2C, USB) while operating from a 1.98 V to 3.8 V supply. 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.

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EFM32LG895F256G-F-BGA120 - 32-bit ARM Cortex-M3 MCU 256KB Flash | Silicon Labs
EFM32LG895F256G-F-BGA120

EFM32LG895F256G-F-BGA120 - 32-bit ARM Cortex-M3 MCU 256KB Flash | Silicon Labs

The Silicon Labs EFM32LG895F256G-F-BGA120 is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller (MCU) from the Leopard Gecko family, operating at up to 48 MHz and integrating 256 KB Flash and 32 KB RAM in a 120-pin BGA (7x7 mm) package. Built on a low-energy platform with innovative energy modes, fast wake-up times, and an autonomous peripheral reflex system, the Leopard Gecko family targets battery-powered and energy-sensitive applications including IoT sensors, wearable medical devices, and remote controls. 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.

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EFM32PG12B500F1024G - 40MHz Cortex-M4 Pearl Gecko MCU 1MB Flash
EFM32PG12B500F1024G

EFM32PG12B500F1024G - 40MHz Cortex-M4 Pearl Gecko MCU 1MB Flash

The Silicon Labs EFM32PG12B500F1024G is an ARM Cortex-M4 microcontroller from the Pearl Gecko family, operating at up to 40 MHz with DSP instructions and a single-precision floating point unit, and integrating 1 MB of flash and 256 KB of RAM. It is supplied from a 1.8 V to 3.8 V VDD rail and is offered in low-power BGA, QFN, QFP and CSP packages across the family. It is one of several similar MCU products in the Pearl Gecko 12 family that an EFM32PG12B500F1024G is designed into. A 32-bit microcontroller (MCU) is an integrated circuit that combines a 32-bit processor core, program memory (typically flash), data memory (RAM), and a rich set of peripherals on a single silicon die. Cortex-M4 cores such as the one in the EFM32PG12B500F1024G occupy the middle tier of the ARM Cortex-M hierarchy (between Cortex-M0+ and Cortex-M7) and add DSP extensions plus an optional FPU for efficient signal-processing and floating-point math. Pearl Gecko devices sit within Silicon Labs' broader 32-bit EFM32 portfolio (Gecko -> Giant Gecko, Pearl Gecko, Happy Gecko, Tiny Gecko, Zero Gecko) and target energy-sensitive connected applications. Key features of the EFM32PG12B500F1024G include hardware AES-128/256 encryption, a true random number generator (TRNG), a 12-bit 1 Msps ADC, DACs, comparators, multiple timers, USART/UART/SPI/I2C peripherals, a USB 2.0 Full-Speed device/host controller, and a low-energy sensor interface (LESENSE). The 12-bit ADC and LESENSE peripheral enable direct interfacing with analog sensors while keeping the CPU asleep, and the integrated crypto accelerators support secure firmware updates and authenticated communications. Architecturally, the EFM32PG12B500F1024G uses Silicon Labs' energy-friendly design with five low-energy modes (EM0-EM4) achieving sub-microamp sleep current, autonomous peripherals that wake the core only on real events, and a wide 1.8 V to 3.8 V supply range that simplifies battery-powered design. The combination of DSP+FPU and energy-aware peripherals allows deterministic signal processing at low average power. Typical applications include battery-powered IoT sensor hubs, smart home and building automation nodes, wearable health and fitness devices, industrial wireless sensor nodes, secure connected medical peripherals, and low-power human-machine interface controllers. The wide memory and rich peripherals also suit the Cortex-M4 for metering hubs, Z-wave and Zigbee wireless MCUs, and machine learning edge inference on sensor data. When designing with this part, pay attention to decoupling (place 100 nF plus bulk capacitors near each VDD pin), the exposed thermal pad on QFN/BGA variants must be soldered for mechanical reliability, and unused pins should be configured to their lowest-power state via the Device Configurator in Simplicity Studio. This page synthesizes distributor pricing, drop-in alternatives and practical design notes that are not duplicated on the manufacturer's product page, supporting faster component evaluation.

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EFM32PG12B500F1024GL125-C - 40MHz ARM Cortex-M4 MCU | Silicon Labs
EFM32PG12B500F1024GL125-C

EFM32PG12B500F1024GL125-C - 40MHz ARM Cortex-M4 MCU | Silicon Labs

The Silicon Labs EFM32PG12B500F1024GL125-C is an ARM Cortex-M4 based 32-bit MCU running up to 40 MHz, with 1 MB of Flash and 256 KB of RAM, housed in a 125-ball BGA (7x7 mm) package and rated for -40C to +125C operation. This Pearl Gecko family member integrates the full DSP instruction set and a single-precision floating-point unit, accelerating computation in signal-processing and control loops. A hardware True Random Number Generator, AES cryptographic accelerator, and Security Management Unit are on-chip, alongside a capacitive-touch sense peripheral. An MCU (Microcontroller Unit) is a single-chip computer that integrates a CPU core, program and data memory, and a rich set of peripherals. In the broader taxonomy, the EFM32PG12 sits within the Cortex-M4 sub-family of ARM 32-bit microcontrollers, which belong to the wider class of embedded processors and SoCs. Pearl Gecko parts are positioned at the intersection of mainstream performance (Cortex-M4 with FPU) and ultra-low-power operation (EM0 active in tens of uA/MHz, EM4 deep-sleep measured in nA), which is critical for always-on battery-powered edge nodes. Key features include 1 MB Flash / 256 KB RAM, Cortex-M4 with FPU and DSP, hardware AES-128/256, hardware SHA-1/SHA-2, True Random Number Generator, Secure Debug, robust capacitive-touch sensing, USB, and an extensive peripheral set including ADC, DAC, comparators, timers, and multiple serial interfaces (USART, SPI, I2C, I2S). Low-energy modes (EM0-EM4) deliver sub-uA sleep currents with fast wake-up, making this part ideal for energy-harvesting and coin-cell designs. Typical applications include IoT sensor hubs, smart-home and building-automation nodes, industrial sensor transmitters, secure connected health devices, asset tracking, and human-machine interface controllers with touch. The wide 1.8V to 3.8V supply range, AEC-Q100-style extended temperature rating, and on-die security engine also make it attractive for industrial and harsh-environment deployments. When designing with this device, ensure PCB layout follows Silicon Labs' BGA escape and decoupling guidance - place four-layer stack-up with 0.1uF/10uF decoupling within a few millimeters of the supply balls. Configure the security locks (Debug Lock, OEM Secure Boot) in production firmware and provision unique AES keys to fully leverage the on-chip security engine. This page synthesizes distributor pricing, drop-in Pearl Gecko alternatives, and practical design notes that go beyond the manufacturer datasheet.

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EFM32PG12B500F1024IM48-C - Pearl Gecko 40MHz Cortex-M4 1MB MCU | Silicon Labs
EFM32PG12B500F1024IM48-C

EFM32PG12B500F1024IM48-C - Pearl Gecko 40MHz Cortex-M4 1MB MCU | Silicon Labs

The Silicon Labs EFM32PG12B500F1024IM48-C is an ARM Cortex-M4 based 32-bit microcontroller from the Pearl Gecko family, running at 40 MHz with 1 MB of Flash and 256 KB of SRAM, housed in a 48-pin QFN (7x7 mm) package. The integrated cryptographic hardware engine, Security Management Unit (SMU), True Random Number Generator (TRNG), and 12-bit ADC make it suitable for connected IoT devices requiring hardware-level security. The device is qualified over the -40C to +125C industrial temperature range (TJ) and ships in tray packaging. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and peripherals onto one die. The Cortex-M4 is a 32-bit RISC processor designed by ARM for embedded applications, featuring single-precision floating-point and DSP extensions. The EFM32 family sits within Silicon Labs' energy-friendly product line, optimized for ultra-low-power active and sleep operation so battery-powered designs can achieve years of runtime. Pearl Gecko specifically targets secure connected-node applications where hardware cryptography and tamper detection matter. Key features of the EFM32PG12B500F1024IM48-C include active current as low as 64 uA/MHz, deep-sleep current of 1.5 uA, a 12-bit 1 Msps ADC, capacitive touch sense hardware, multiple low-energy peripherals (LETIMER, LEUART, I2C), and a flexible peripheral reflex system (PRS) for autonomous inter-peripheral signaling. The 48-QFN (7x7) package exposes all major peripherals including USB, CAN, and a 12-bit DAC. Architecturally, the device combines a high-performance Cortex-M4 core with a Cortex-M0+ auxiliary network processor in some family members (not this one), low-energy peripherals that can run independently of the CPU, and a wide-voltage 1.85V to 3.8V supply. The integrated crypto engine accelerates AES-128/256, ECC, SHA-1/2, and TRNG operations, offloading the main CPU and protecting key material. Typical applications include battery-powered IoT sensor nodes, secure connected health devices, smart metering, industrial HMI panels, capacitive touch interfaces, and wireless sensor gateways (when paired with an external radio). The 1 MB Flash and 256 KB SRAM allow on-device protocol stacks (e.g. Bluetooth Mesh, Thread, or Matter via SDK). When designing with this part, ensure decoupling capacitors are placed close to VDD pins, follow the reference manual's low-energy peripheral routing guidelines, and verify that the chosen development kit (SLSTK3402A or equivalent) supports your SDK version (Simplicity Studio / GSDK). This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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EFM32PG1B100F128GM32-C0R - 40MHz ARM Cortex-M4 MCU, 128KB Flash | Silicon Labs
EFM32PG1B100F128GM32-C0R

EFM32PG1B100F128GM32-C0R - 40MHz ARM Cortex-M4 MCU, 128KB Flash | Silicon Labs

The Silicon Labs EFM32PG1B100F128GM32-C0R is a 32-bit ARM Cortex-M4 microcontroller from the energy-friendly Pearl Gecko family, integrating 128 kB of flash and 32 kB of RAM in a 32-pin QFN (5x5 mm) package with an exposed pad. It runs at up to 40 MHz, includes a single-precision hardware floating-point unit (FPU), and supports the full DSP instruction set for embedded signal processing. The on-chip supply range is 1.85 V to 3.8 V, suiting it directly to single-cell Li-ion or 3.3 V regulated rails. ARM Cortex-M4 microcontrollers are 32-bit processor cores designed for deterministic, low-power embedded applications. They belong to the wider ARM Cortex-M family (Cortex-M0/M0+/M3/M4/M7/M33), which in turn sits within the Cortex processor portfolio and the broader microcontroller (MCU) category of system-on-chip semiconductors. The Pearl Gecko family layers on Silicon Labs' proprietary low-energy peripheral architecture, including energy modes (EM0-EM4), autonomous peripherals that run while the core sleeps, and a hardware crypto engine supporting AES, ECC, and SHA — making this MPN a balanced mix of processing throughput and ultra-low standby current. Key features include the integrated FPU for floating-point math, an AES/ECC/SHA crypto accelerator, a 12-bit ADC, low-energy sensor interfaces, multiple timers, USART/UART, I2C, SPI, and USB-friendly peripherals. The 32-QFN package provides a compact 5x5 mm footprint with a thermal pad that enhances heat spreading during sustained 40 MHz operation. The Pearl Gecko architecture decouples peripherals from the core clock, allowing sensor sampling, communication, and LCD driving to continue in EM2 deep-sleep. This design, plus short wake-up time from energy-saving modes, makes the EFM32PG1B100F128GM32-C0R ideal for any battery-powered application, including wearables, smart sensors, and IoT edge nodes. Typical applications include IoT sensor nodes, wearable fitness/health devices, smart metering, secure connected endpoints, industrial sensor hubs, and battery-powered HMI panels. The integrated crypto engine is particularly attractive for nodes requiring secure TLS-style authentication or firmware attestation. This page synthesizes distributor pricing, Pearl Gecko family drop-in alternatives, and practical low-energy design notes not found on a single manufacturer page.

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EFM32PG1B200F256GM48 - ARM Cortex-M4 40MHz 256KB Flash MCU | Silicon Labs
EFM32PG1B200F256GM48

EFM32PG1B200F256GM48 - ARM Cortex-M4 40MHz 256KB Flash MCU | Silicon Labs

The Silicon Labs EFM32PG1B200F256GM48 is an ARM Cortex-M4 based 32-bit microcontroller (MCU) in the energy-friendly EFM32 Pearl Gecko family, delivering up to 40 MHz core clock with hardware FPU and full DSP instruction set. The device integrates 256 KB of on-chip Flash and 32 KB of RAM, and is housed in a 48-pin QFN (7x7 mm) package with an exposed thermal pad (QFN-48 / GM48). The supply voltage range is 1.85 V to 3.8 V, making it well suited to single-cell Li-ion, 2xAA, and energy-harvesting designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), and programmable peripherals. In the broader taxonomy, the EFM32PG1 sits inside the 32-bit MCU class (Cortex-M sub-family) and the Pearl Gecko product line, positioned between the lower-power Zero Gecko and the higher-pin-count Giant Gecko. Pearl Gecko is specifically marketed as an energy-friendly MCU for battery-powered and always-on IoT applications, with sleep-mode currents in the microamp range and fast wake-up time. Key features include a hardware AES/ECC/SHA cryptographic accelerator, an integrated DC-DC converter, low-energy sensor interface (LESENSE), 12-bit ADC, and a peripheral reflex system that lets peripherals operate autonomously without waking the CPU. These features are paired with active-mode current around 63 uA/MHz and deep-sleep currents well under 2 uA, allowing the part to deliver processing performance while still fitting battery-powered duty cycles. Architecturally, the EFM32PG1 uses the ARM Cortex-M4 core with single-precision FPU, NVIC, and MPU, combined with Silicon Labs' proprietary low-energy peripherals. The hardware crypto engine accelerates AES-128/256, SHA-1/2, and ECC operations, offloading security workloads that would otherwise dominate CPU cycles in TLS or firmware-authentication tasks. Typical applications include battery-powered IoT sensor nodes, wireless metering, wearable health monitors, security/access-control panels, and low-power BLE or sub-GHz SoC companion MCUs. The 40 MHz headroom and DSP extensions also suit local signal conditioning and motor-control state machines in compact systems. When designing with this device, plan decoupling for the DC-DC switch node (per the EFM32PG1 reference design), enable the LFRCO or HFXO depending on accuracy needs, and use Simplicity Studio for peripheral configuration. Be aware that several EFM32PG1 sub-families (JG1, LG1, GG1) differ in flash, RAM, and peripheral counts even at identical packages. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical low-power design notes not found in the standalone datasheet.

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EFM32PG1B200F256GM48-C0 - 256KB Flash ARM Cortex-M4 MCU | Silicon Labs
EFM32PG1B200F256GM48-C0

EFM32PG1B200F256GM48-C0 - 256KB Flash ARM Cortex-M4 MCU | Silicon Labs

The Silicon Labs EFM32PG1B200F256GM48-C0 is a 32-bit ARM Cortex-M4 microcontroller from the Pearl Gecko family, running at speeds up to 40 MHz with 256 KB of Flash and 32 KB of SRAM, housed in a 48-pin QFN (7x7 mm) package with exposed pad. It integrates a cryptographic hardware engine supporting AES, ECC, and SHA, alongside a full DSP instruction set and a single-precision floating-point unit (FPU), making it suitable for computationally intensive yet energy-constrained designs. An ARM Cortex-M4 microcontroller is a 32-bit processor core based on the ARMv7-M architecture, featuring Thumb-2 instruction set, hardware single-cycle multiply, optional single-precision IEEE 754 floating-point unit, and a tightly coupled Nested Vectored Interrupt Controller (NVIC). Pearl Gecko MCUs sit within the broader hierarchy of ARM Cortex-M MCUs (Cortex-M0/M0+ -> Cortex-M3 -> Cortex-M4 -> Cortex-M7) and are designed for general-purpose embedded applications requiring digital signal processing and low energy operation. Key specifications include an operating voltage range of 1.85 V to 3.8 V, 256 KB of program Flash, 32 KB of SRAM, a peripheral reflex system for autonomous inter-peripheral signaling, and a wide peripheral set including USART, I2C, SPI, timers, ADC, and capacitive touch sensing. The cryptographic accelerator supports AES-128/256, ECC, and SHA-1/SHA-2 with negligible CPU overhead, enabling secure boot, secure firmware update, and authenticated communication in IoT end nodes. Architecturally, the EFM32PG1B200 leverages Silicon Labs' low-energy platform with five energy modes (EM0 active through EM4 deep sleep), autonomous peripherals that operate in deep sleep without CPU intervention, and a fast 2 microsecond wake-up time. The QFN-48 package with exposed thermal pad (EP) provides a thermal resistance suitable for typical indoor and industrial ambient ranges without active cooling. Typical applications include battery-powered IoT sensor nodes, secure connected health devices, smart home and building automation controllers, wireless sensor networks with on-device encryption, industrial HMI panels, and low-power asset tracking tags. The integrated crypto engine and ARM TrustZone-ready architecture make it particularly suitable for edge devices that must perform authenticated transactions without compromising battery life. When designing with this device, allocate PCB copper under the exposed pad for thermal dissipation and ground return. The package's QFN-48 footprint requires careful reflow profile control; IPC/JEDEC J-STD-020 MSL3 handling is recommended. Decoupling requires 100 nF on each VDD pin plus a bulk 4.7 uF, and a 32.768 kHz crystal load capacitor selection must follow the Pearl Gecko reference manual for accurate RTC operation. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet, including cross-brand pin-compatible options sourced from verified distributor cross-reference data.

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EFM32TG108F16-QFN24 - 32MHz 16KB MCU | Silicon Labs
EFM32TG108F16-QFN24

EFM32TG108F16-QFN24 - 32MHz 16KB MCU | Silicon Labs

The Silicon Labs EFM32TG108F16-QFN24 is a 32-bit ARM Cortex-M3 Tiny Gecko microcontroller operating up to 32 MHz, with 16 KB of Flash memory and a 24-QFN (5 x 5 mm) package. Its verified supply-voltage range is 1.85 V to 3.8 V, making it suitable for low-voltage embedded systems, portable instruments, connected sensors, and energy-conscious battery-powered equipment. A microcontroller is a semiconductor device that integrates a processor core, program memory, working memory, and peripherals into one compact package. The EFM32TG108 belongs to the Tiny Gecko family, a low-power 32-bit microcontroller line built around the ARM Cortex-M3 architecture. Its position in the hierarchy is MCU, embedded microcontroller, embedded processor, and semiconductor. The architecture combines a 32 MHz maximum clock with energy-saving modes and short wake-up behavior intended for systems that spend substantial time in low-power states. The EFM32TG108F16-QFN24 provides 16 KB (16K x 8) of Flash for firmware and 32-bit processing through the ARM Cortex-M3 core. Its verified 24-QFN package measures 5 x 5 mm and is suitable for compact, surface-mounted designs. The operating range of 1.85 V to 3.8 V supports 2.5 V and 3.3 V system architectures, although individual external components and board-level voltage tolerances must still be checked. The supplied distributor listing identifies the MCU as an ARM Cortex-M3 Tiny Gecko part rated at 32 MHz. The principal technical benefit is efficient 32-bit processing in a small, low-power package. A 32 MHz clock provides useful computation headroom for protocol handling, control loops, signal acquisition, and system management without requiring a larger processor package. Low-power operation is particularly relevant when average energy per task, rather than peak processing speed, determines battery life. The available evidence does not specify the target device's RAM capacity, GPIO count, timer configuration, analog performance, or exact power-consumption figures, so those parameters should be confirmed in the manufacturer datasheet before final design release. Typical uses include wearable accessories, compact sensor nodes, industrial monitoring modules, energy meters, portable measurement products, and low-power embedded control boards. In each case, the device can act as the central controller, executing application firmware while using sleep states between infrequent events. Designers should size the decoupling network around the device-specific requirements in the EFM32TG108 datasheet and preserve adequate routing clearance for high-speed signals and radio-adjacent circuitry. The principal design consideration is avoiding unverified assumptions about the peripheral complement. Firmware drivers, pin multiplexing, programming interfaces, brownout behavior, and exact memory availability must be checked against the correct datasheet revision for the selected orderable MPN. This page combines the verified distributor specifications, package data, source links, and same-family replacement candidates into a practical sourcing and design reference. This product page additionally distinguishes verified characteristics from missing parameters, summarizes the strongest documented use cases, and identifies same-family QFN-24 alternatives without presenting uncertain cross-family parts as guaranteed drop-in replacements.

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EFM32TG108F32-QFN24 - Tiny Gecko Cortex-M3 MCU, 32KB Flash | Silicon Labs
EFM32TG108F32-QFN24

EFM32TG108F32-QFN24 - Tiny Gecko Cortex-M3 MCU, 32KB Flash | Silicon Labs

The Silicon Labs EFM32TG108F32-QFN24 is an ARM Cortex-M3 based 32-bit microcontroller from the energy-friendly Tiny Gecko family, operating at speeds up to 32 MHz and housed in a 24-pin QFN (5x5 mm) package with exposed pad. The device integrates 32 kB of Flash memory and 4 kB of RAM, with 17 digital I/O pins, two 16-bit timers, and a rich low-energy peripheral set designed for battery-powered and energy-harvesting designs. A microcontroller (MCU) is a single-chip computer that contains a processor core, memory, and programmable input/output peripherals. Within the broader taxonomy of semiconductors, MCUs sit alongside microprocessors (MPUs) and DSPs as the principal embedded computing elements. The EFM32 Tiny Gecko family is positioned as an ultra-low-power Cortex-M3 line, sitting between the entry-level Zero Gecko (Cortex-M0+) and the higher-end Gecko/Giant Gecko (Cortex-M3/M4) families in Silicon Labs' portfolio. Key differentiating features include a Cortex-M3 core with up to 32 MHz operation, hardware AES encryption, a 12-bit ADC, low-energy UART and I2C peripherals capable of operation in deep sleep, and Silicon Labs' patented low-energy sensor interface (LESENSE). The peripheral reflex system (PRS) allows peripherals to communicate directly without CPU intervention, dramatically reducing active time and average current consumption. The 24-QFN package provides a compact footprint with an exposed thermal pad for improved heat dissipation in space-constrained designs. Architecturally, the EFM32TG108F32-QFN24 employs a low-leakage CMOS process with five energy modes (EM0-EM4), enabling current consumption as low as sub-microamp levels in deep sleep while retaining RAM and GPIO state. The integrated LDO and DC-DC converter interface, along with the on-chip brown-out detector and watchdog, simplify BOM and improve system reliability. Typical applications include battery-powered IoT sensor nodes, wearable health and fitness devices, remote keyless entry, energy harvesting systems, smart metering, and any application requiring ARM Cortex-M3 performance with the lowest possible active and sleep current. When designing with this device, ensure the exposed pad is soldered to a sufficient copper pour for thermal performance and that unused pins are configured in their defined reset state to minimize leakage.

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EFM32TG108F4-D-QFN24 - 32MHz Cortex-M3 4KB MCU | Silicon Labs
EFM32TG108F4-D-QFN24

EFM32TG108F4-D-QFN24 - 32MHz Cortex-M3 4KB MCU | Silicon Labs

Silicon Labs EFM32TG108F4-D-QFN24 is an ARM Cortex-M3 microcontroller with a maximum clock speed of 32 MHz, 4 KB of Flash memory, 2 KB of RAM, and 17 digital I/O pins, housed in a 24-QFN package measuring 5 mm by 5 mm. It belongs to the EFM32 Tiny Gecko family and is designed for compact, energy-sensitive embedded systems that require efficient processing, low-power operation, and rapid wake-up behavior. An EFM32 microcontroller is a 32-bit embedded processing IC that combines an ARM Cortex-M processor core with flash memory, RAM, general-purpose I/O, timers, communications peripherals, and low-energy management features. Within the product hierarchy, this device is an MCU, embedded controller, semiconductor, and energy-conscious alternative to more general-purpose microcontroller platforms when compact size and low standby consumption are important design priorities. The verified device data identifies an ARM Cortex-M3 core operating up to 32 MHz, 4 KB of programmable Flash organized as 4K by 8, 2 KB of SRAM, and 17 digital I/O pins. It also includes two 16-bit timers. Its small 5 mm by 5 mm QFN-24 land pattern supports dense PCB construction, while the 24-QFN package provides a practical surface-mount option for wearable, sensor, embedded-control, and connected peripheral designs. The Tiny Gecko architecture emphasizes energy-saving operating modes, fast wake-up times, and retention-oriented low-energy techniques. These characteristics are particularly valuable in battery-operated equipment where the controller may spend most of its time asleep and briefly process sensor readings, control outputs, or exchange data. The Cortex-M3 processor provides a substantially more capable instruction set than an 8-bit controller while retaining a compact, cost-conscious embedded footprint. Typical uses include low-power sensor nodes, compact industrial sensing modules, battery-powered accessories, wearable-device subcontrollers, building-control endpoints, and small instrumentation products. In these applications, the 4 KB Flash and 2 KB RAM favor firmware focused on control logic, sampling, local signal conditioning, and communications support rather than large graphical interfaces or extensive local data storage. Designers should verify the complete exposed-pad connection, pin multiplexing, decoupling requirements, programming interface, and operating limits against the manufacturer datasheet before layout release. The verified snippets provide the principal electrical and package information, but they do not expose the complete QFN-24 pin table or all timing and peripheral details, so unsupported values are not inferred in this data set. This page combines verified manufacturer and distributor specifications with package and lifecycle context, a strictly filtered replacement analysis, and engineering-oriented application guidance. It distinguishes confirmed parameters from missing details, making it more useful for preliminary design decisions and procurement than a distributor listing alone.

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