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EFM32G230F32-QFN64 - 32MHz Cortex-M3 MCU | Silicon Labs
EFM32G230F32-QFN64

EFM32G230F32-QFN64 - 32MHz Cortex-M3 MCU | Silicon Labs

The Silicon Labs EFM32G230F32-QFN64 is a 32-bit ARM Cortex-M3 Gecko microcontroller operating up to 32 MHz, with 32 kB of Flash memory, 8 kB of RAM, and 56 digital I/O pins in a 64-QFN 9 x 9 mm package. It combines a low-power platform with autonomous peripherals and energy-saving modes for embedded control applications. A microcontroller is a semiconductor device that integrates a processor core, memory, peripherals, and interfaces into one compact component. Within the hierarchy of embedded semiconductors, an MCU is a programmable controller used to acquire inputs, execute firmware, and control outputs. The EFM32G230F32-QFN64 belongs to the Gecko family of ARM Cortex-M3 devices suited to low-power, energy-sensitive systems. Verified product information identifies a 32-bit CPU, a 32 MHz maximum speed, 32 kB Flash, 8 kB RAM, 56 digital I/O pins, and three 16-bit timers. The family-level datasheet also reports low-power operation with consumption as low as 0.6 uA in Stop mode and 180 uA/MHz in Run mode. These figures support battery-powered sensing, portable monitoring, and industrial control designs where efficiency matters. The Gecko architecture adds fast wake-up behavior and autonomous peripherals, allowing selected functions to operate with less CPU intervention. This can reduce active processing time in systems that periodically acquire data or respond to external events. The MCU also integrates digital and analog functions in one device, helping reduce board area compared with separate processor and discrete interface components. Typical uses include sensor nodes, building automation endpoints, portable instruments, connected equipment, and low-power embedded control. The 56 digital I/O pins provide substantial external connectivity, while the three 16-bit timers support periodic timing, pulse measurement, motor-control timing, or basic event generation. The 9 x 9 mm QFN package is suitable for compact boards but requires careful thermal and layout planning. Designers should confirm the exact pin functions, exposed-pad connection, operating voltage, clock configuration, and required decoupling directly from the manufacturer datasheet and reference manual. Because the available verified data does not provide a complete package pin map or several operating-limit values, those details must not be inferred. This product synthesis combines verified distributor identity, family-level performance data, package information, and practical selection guidance. It separates documented facts from unavailable parameters so procurement and engineering decisions remain traceable.

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EFM32G230F64-QFN64 - 32MHz Cortex-M3 64KB MCU | Silicon Labs
EFM32G230F64-QFN64

EFM32G230F64-QFN64 - 32MHz Cortex-M3 64KB MCU | Silicon Labs

The Silicon Labs EFM32G230F64-QFN64 is an ARM Cortex-M3 Gecko microcontroller IC operating up to 32 MHz, with 64 kB of Flash memory, 16 kB of RAM, 56 digital I/O pins, and a 64-QFN 9 x 9 mm package. It is designed for energy-sensitive embedded systems that require a 32-bit microcontroller, low-power operation, and integrated mixed-signal and connectivity features. A microcontroller is a programmable integrated circuit containing a processor core, memory, peripherals, and I/O interfaces. In the product hierarchy, the EFM32G230F64-QFN64 belongs to the EFM32 Gecko family of 32-bit embedded processors, based on the ARM Cortex-M3 architecture. It is intended for use in industrial, consumer, medical, and other battery-powered or energy-constrained electronic products. Key features include a 32 MHz ARM Cortex-M3 processor, 64 kB Flash, 16 kB RAM, 56 digital I/O pins, and three 16-bit timers. The EFM32G platform also provides low-power operating techniques, fast wake-up behavior, energy-saving modes, and autonomous peripherals. According to the Silicon Labs EFM32G datasheet, devices in the family can consume as little as 0.6 microamps in Stop mode and 180 microamps per megahertz in Run mode. The EFM32G230F64-QFN64 integrates substantial peripheral functionality into a compact package, reducing the need for external components in connected embedded designs. Its 56 digital I/O pins provide interface capacity for sensors, actuators, communications, human-interface elements, and control signals. The three 16-bit timers support timing, counting, pulse-width modulation, and periodic event generation, while the integrated analog and communication resources are useful for monitoring, control, and energy-sensitive connected products. Typical applications include low-power sensor nodes, industrial monitoring equipment, medical instrumentation, consumer accessories, battery-powered controls, and connected embedded systems. The device is particularly suitable when a compact 32-bit control platform is needed without the memory footprint of a larger microcontroller. PCB design should follow Silicon Labs hardware-design guidance, including careful exposed-pad thermal management, supply decoupling, and validation of the final power and ground layout. Because the supplied product information does not include a complete manufacturer pinout table, the complete 64-pin mapping cannot be reproduced safely without verification against the official datasheet. This page consolidates verified manufacturer and distributor information, distinguishes the core EFM32G230F64-QFN64 from its tape-and-reel ordering suffix, and provides engineering-oriented application and comparison guidance rather than repeating only catalog metadata.

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EFM32G232F128-QFP64 - 32MHz ARM Cortex-M3 MCU, 128KB Flash, 64-TQFP | Silicon Labs
EFM32G232F128-QFP64

EFM32G232F128-QFP64 - 32MHz ARM Cortex-M3 MCU, 128KB Flash, 64-TQFP | Silicon Labs

The Silicon Labs EFM32G232F128-QFP64 is an ARM Cortex-M3 based 32-bit microcontroller (MCU) operating up to 32 MHz, with 128 kB of Flash and 16 kB of RAM, housed in a 64-pin TQFP (10x10 mm) package. It is part of the energy-friendly EFM32 Gecko family and supplies 53 digital I/O pins, 3 x 16-bit timers/counters, and a peripheral set optimised for low-energy applications. Supply voltage is 1.98 V to 3.8 V, allowing direct connection to coin cells, 2x AA, or regulated 3.3 V rails. An MCU (microcontroller) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), and a configurable set of analog and digital peripherals. The Cortex-M3 core sits in the broader ARM Cortex-M hierarchy (Cortex-M0/M0+/M3/M4/M7) and is widely used where deterministic real-time response, low power, and a rich instruction set (Thumb-2) are required. Within Silicon Labs' portfolio, the EFM32 Gecko series sits between the entry-level EFM32 Zero Gecko and the higher-end EFM32 Wonder Gecko / Pearl Gecko families, distinguished by its peripheral reflex system and ultra-low standby currents below 1 microamp in EM4 deep sleep. Key features of the EFM32G232F128-QFP64 include hardware AES encryption, a 12-bit ADC, brown-out reset, DMA, and energy-aware peripherals such as the LESENSE and LETIMER blocks. Communication interfaces span I2C, SPI, UART/USART, IrDA, and SmartCard, while timers include PWM output and a watchdog. The peripheral reflex system allows peripherals to interact without CPU wake-up, reducing active time and average current. Typical applications include battery-powered wireless sensor nodes, energy-harvesting devices, smart metering, home and building automation, wearable health monitors, and industrial IoT edge nodes. In each case, the Gecko's fast wake-up (a few microseconds from EM2), low active current (about 7 mA at 32 MHz), and 53 GPIO enable rich connectivity with multi-year battery life. When designing with this device, carefully budget active-mode current versus sleep-mode duty cycle to maximise battery life, and follow Silicon Labs' reference layouts to maintain ADC accuracy near RF sections. Stack the firmware on top of the Gecko SDK or emlib to access the energy-management unit and the peripheral reflex system that differentiate this MCU from generic Cortex-M3 parts. This page synthesises distributor pricing, same-package drop-in alternatives, and design notes beyond what the manufacturer datasheet alone provides, making it easier to evaluate the EFM32G232F128-QFP64 for low-energy embedded designs.

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EFM32G232F128G-E-QFP64 - 32MHz ARM Cortex-M3 MCU, 128KB Flash | Silicon Labs
EFM32G232F128G-E-QFP64

EFM32G232F128G-E-QFP64 - 32MHz ARM Cortex-M3 MCU, 128KB Flash | Silicon Labs

The Silicon Labs EFM32G232F128G-E-QFP64 is an ARM Cortex-M3 Gecko microcontroller IC running at 32 MHz with 128 kB (128K x 8) of flash program memory and 16 kB of RAM, housed in a 64-pin TQFP (10 mm x 10 mm) surface-mount package. It is a member of the energy-friendly EFM32 Gecko family designed for ultra-low-power embedded designs. An ARM Cortex-M3 microcontroller (MCU) is a 32-bit processor core from Arm Holdings featuring the Thumb-2 instruction set, hardware divide, atomic bit-banding, and a deterministic nested vector interrupt controller (NVIC). Cortex-M3 sits in the Cortex-M family hierarchy (Cortex-M0/M0+ -> Cortex-M3 -> Cortex-M4/M7) and is widely used for cost-sensitive embedded applications requiring more performance than M0/M0+ can deliver. The EFM32G family is positioned by Silicon Labs as one of the lowest-energy Cortex-M3 product lines on the market. Key features include 53 digital I/O pins, 3 x 16-bit timers, AES hardware encryption, autonomous peripherals that operate in sleep modes, ultra-fast wake-up from sleep, an integrated LESENSE / low-energy sensor interface block, and on-chip analog such as ADC and comparator blocks. The Gecko series targets battery-powered systems with typical Stop current of 0.6 uA and Run current of 180 uA/MHz per the EFM32G datasheet. The device operates across the industrial -40C to +85C range. Architecturally, the part uses a Cortex-M3 core with a peripheral reflex system (PRS) that lets peripherals signal each other without CPU intervention - a key energy saver. Flash and RAM are accessed through the AHB-Lite bus, and low-energy peripherals are placed on a separate APB bus so they can run while the CPU sleeps. Typical applications include battery-powered IoT sensors, wearable health monitors, smart metering, wireless sensor nodes paired with sub-GHz or BLE companions, and industrial HMI / alarm panels. The integrated AES block is suitable for encrypted firmware update and secure authentication. When designing with this device, plan the decoupling network carefully: place 100 nF and 1 uF capacitors as close as possible to each VDD pin pair, and follow the EFM32G hardware design guide for the 32 kHz crystal layout to avoid extra current draw from a high-ESR load. A JTAG or SWD header is required for programming - the on-chip debug interface is supported by Simplicity Studio and the J-Link toolchain.

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EFM32G232F128G-E-QFP64R - 32MHz Cortex-M3 MCU 128KB Flash | Silicon Labs
EFM32G232F128G-E-QFP64R

EFM32G232F128G-E-QFP64R - 32MHz Cortex-M3 MCU 128KB Flash | Silicon Labs

The Silicon Labs EFM32G232F128G-E-QFP64R is a 32-bit ARM Cortex-M3 based Gecko microcontroller IC integrating 128KB Flash, 16KB RAM, AES encryption hardware, and an autonomous peripheral set, housed in a 64-pin TQFP (10x10 mm) package. It operates from a 1.98V to 3.8V supply at up to 32MHz core clock and offers 53 general-purpose I/O pins, the Low Energy Sensor Interface (LESENSE), and the peripheral reflex system that lets timers, ADCs, and GPIOs react without CPU wakeup. A microcontroller (MCU) is an integrated circuit that combines a processor core, program and data memory, peripherals, and interrupt logic on a single chip. The Cortex-M3 family is a 32-bit RISC core designed for embedded applications, balancing deterministic interrupt latency, Thumb-2 instruction efficiency, and a tightly integrated NVIC. The EFM32G "Gecko" family belongs to the broader ARM Cortex-M MCU ecosystem within Silicon Labs' energy-friendly portfolio, positioning it between 8-bit MCUs and higher-end Cortex-M4 application processors. Key features of the EFM32G232F128G-E-QFP64R include 0.6 uA Stop mode current (RTC running), 180 uA/MHz Run mode current, hardware AES-128 encryption accelerator, 12-bit ADC, 8-channel DMA, integrated LCD controller, and 2x analog comparator plus 3x operational amplifier (op-amp) blocks. This peripheral integration reduces external bill-of-materials for sensor and metering designs, while the autonomous LESENSE block can scan capacitive or inductive sensors in deep sleep. The architecture centers on a low-leakage CMOS process and energy-modes-aware clock gating, allowing the device to enter EM2/EM3 deep-sleep states while still triggering wakeup from GPIO, RTC, or LESENSE events. The peripheral reflex system (PRS) routes peripheral events over dedicated fabric channels, offloading routine signal routing from the CPU and enabling sub-microsecond response without leaving sleep. Typical applications include battery-powered IoT sensor nodes, smart HVAC thermostats, water/gas utility metering, wireless sensor hubs front-ending sub-GHz radios, wearable health patches, and industrial asset tracking tags. The on-chip AES-128 block and 128KB Flash also suit retrofit devices that need authenticated firmware updates over BLE/Zigbee companion ICs. When designing with the EFM32G232F128G-E-QFP64R, budget decoupling capacitors close to every VDD/VDD_x pair, route the 32kHz crystal traces symmetrically, and leverage the EFM32 CMSIS-Pack and Simplicity Studio for peripheral configuration to avoid hidden power draw from misconfigured GPIO retention modes. This page synthesizes distributor stock, parametric cross-references, and design guidance beyond the manufacturer datasheet, helping engineers select drop-in same-package variants and understand where this Gecko MCU fits within the wider ARM Cortex-M3 landscape.

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EFM32G232F32-QFP64 - 32MHz Cortex-M3 MCU | Silicon Labs
EFM32G232F32-QFP64

EFM32G232F32-QFP64 - 32MHz Cortex-M3 MCU | Silicon Labs

The Silicon Labs EFM32G232F32-QFP64 is an ARM Cortex-M3 32-bit microcontroller operating up to 32 MHz, with 32 kB of Flash memory, 8 kB of RAM, and 53 digital I/O pins in a 64-TQFP package. It combines conventional embedded processing with a low-power Gecko platform designed for energy-sensitive systems. A microcontroller is a programmable system-on-chip that integrates a processor core, memory, peripherals, and I/O into one device. The ARM Cortex-M3 belongs to the embedded microcontroller hierarchy, while the EFM32G family adds low-power design techniques, fast wake-up behavior, and energy-saving modes. This makes the device suitable when a design needs more control capability than a simple fixed-function controller without adopting a more complex high-performance processor. The EFM32G232F32-QFP64 provides 32 kB Flash for firmware and 8 kB RAM for working data. Its 53 digital I/O pins support external sensors, indicators, switches, communications interfaces, and control signals. Three 16-bit timers are included for periodic events, timing, input capture, output compare, or other timer-based functions. The 32 MHz Cortex-M3 core provides a balance of processing speed and low-power operation for embedded control. The verified manufacturer result specifically identifies the device as an ARM Cortex-M3 based MCU with speeds up to 32 MHz and highlights its low-power platform, fast wake-up times, energy-saving modes, 32 kB Flash, 8 kB RAM, 53 digital I/O pins, and three 16-bit timers. Exact supply voltage, peripheral details, package dimensions, temperature limits, memory organization, and electrical characteristics were not included in the supplied source snippets and therefore remain marked where data is needed. Typical uses include low-power sensor nodes, industrial control products, building automation modules, connected measurement equipment, small motor-control systems, and portable embedded instruments. The 64-TQFP package exposes more I/O than smaller packages and can simplify board-level routing when a design requires several external connections. Compared with a low-pin-count MCU, the EFM32G232F32-QFP64 offers additional I/O flexibility while retaining a compact surface-mount form factor. Designers should verify the complete manufacturer datasheet before layout, firmware development, or production release. Pay particular attention to power sequencing, decoupling, exposed-pin requirements, clock configuration, programming method, peripheral multiplexing, and the exact meanings of all 64 package pins. The supplied data supports the core, memory, speed, I/O, timer, package, and low-power claims above but does not provide a complete electrical table. This page consolidates the verified manufacturer and distributor search results, records unavailable technical fields transparently, and distinguishes the target MCU from package-only or functionally similar alternatives. The primary sourcing path is the Silicon Labs product page, supplemented by distributor records for procurement and additional datasheet discovery.

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EFM32G232F64-QFP64 - 32MHz Cortex-M3 64KB Flash MCU | Silicon Labs
EFM32G232F64-QFP64

EFM32G232F64-QFP64 - 32MHz Cortex-M3 64KB Flash MCU | Silicon Labs

The Silicon Labs EFM32G232F64-QFP64 is an ARM Cortex-M3 based 32-bit microcontroller (MCU) running up to 32 MHz, with 64 kB Flash (64K x 8), 16 kB RAM and 53 digital I/O pins, supplied in a 64-TQFP (10x10 mm) package operating from 1.98 V to 3.8 V. It belongs to the EFM32 Gecko family, a low-power 32-bit MCU platform built around energy-conscious techniques, fast wake-up times and multiple energy-saving modes. An MCU (microcontroller) is a single integrated circuit containing a CPU core, program memory, data memory and peripherals. In the taxonomy a microcontroller is a type of integrated circuit and semiconductor, and within that group it sits beside memory ICs, interface ICs, ADC/DAC and clock & timing devices. The Gecko family specifically targets energy-sensitive embedded systems where average current draw, not just peak performance, determines battery life. Key features of this device include a 32 MHz ARM Cortex-M3 core with integrated sleep and stop modes, 64 kB of flash for firmware and 16 kB of SRAM for working memory, three 16-bit timers, and hardware AES support as noted in the Mouser listing for this part number. A wide 1.98 V to 3.8 V supply range makes the part usable across 2.5 V and 3.3 V system rails, and the 64-TQFP 10x10 mm footprint keeps the board area small while exposing 53 GPIO for sensors, actuators and communications. Technically the part belongs to the Gecko series, whose energy-saving modes and fast wake-up behaviour are the differentiating architectural features versus generic Cortex-M3 devices. Because the device is available in a 64-pin TQFP, designers get both fine-grained pin multiplexing and a package that is straightforward for automated assembly, pick-and-place and visual inspection, unlike fine-pitch QFN or BGA options. Typical applications include low-power sensor nodes and IoT end devices, industrial monitoring and control modules, building and energy metering equipment, portable and wearable accessories, and USB-connected peripheral controllers where the 53 available I/O pins allow several peripherals to share one package. A key design consideration is that the flash capacity and RAM size define how much application code and data buffering fit on the die; designs that need large buffers should consider the 128 kB and 256 kB members of the Gecko family instead of this 64 kB variant. This page synthesizes distributor pricing, verified drop-in alternatives, pin-level guidance and practical design notes that are not found together in the manufacturer datasheet, helping engineers shorten BOM and layout decisions for EFM32G232F64-QFP64.

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EFM32G30F128-QFN64 - 32MHz Cortex-M3 128KB MCU | Silicon Labs
EFM32G30F128-QFN64

EFM32G30F128-QFN64 - 32MHz Cortex-M3 128KB MCU | Silicon Labs

The Silicon Labs EFM32G30F128-QFN64 is a 32-bit ARM Cortex-M3 Gecko microcontroller with a 32 MHz operating frequency, 128 KB of embedded flash memory, and 16 KB of RAM, supplied in a compact 64-QFN 9 x 9 mm package. It operates from a 1.98 V to 3.8 V supply and is designed for low-power embedded systems requiring efficient processing, analog integration, and autonomous peripheral operation. A microcontroller is a programmable semiconductor that combines a processor core, memory, and peripherals on one integrated circuit. The EFM32G30F128-QFN64 belongs to the Gecko family of 32-bit ARM Cortex-M3 microcontrollers, which sit within the hierarchy of embedded processors, microcontrollers, and semiconductor control devices. Its ARM Cortex-M3 core provides a 32-bit instruction set while the EFM32 peripheral architecture allows many hardware functions to operate with limited CPU involvement. The verified device data identifies a maximum clock frequency of 32 MHz, 128 KB of flash organized as 128K x 8, and 16 KB of SRAM. Silicon Labs specifies a 1.98 V to 3.8 V operating supply range and a 64-QFN package measuring 9 x 9 mm. The family datasheet also reports low power consumption, including as little as 0.6 uA in Stop mode and 180 uA/MHz in Run mode, making the device suitable for battery-powered and energy-conscious products. The Gecko architecture integrates high-speed analog and digital peripherals with the Cortex-M3 core. Product Revision E documentation identifies pin-compatible replacements for earlier EFM32G revision devices. However, firmware, peripheral configuration, and electrical behavior must still be checked against the specific part-number suffix before treating a related revision as a production substitute. A complete exposed-pad thermal design is essential because heat removal depends on the PCB copper area and thermal via arrangement. Typical uses include industrial sensing and control nodes, compact environmental monitors, battery-powered IoT endpoints, wearable accessories, and connected measurement instruments. The small 9 x 9 mm QFN footprint supports space-constrained designs where a larger quad flat package would be undesirable. The 128 KB flash capacity provides room for application firmware, protocol stacks, and boot code, while the 16 KB RAM supports task working memory and moderate buffering. Designers should follow the manufacturer's recommended power, decoupling, and exposed-pad land-pattern requirements. A high-quality local ground plane and short return paths help analog and digital sections remain stable under switching loads. Confirm the exact operating temperature grade, peripheral mix, and pin multiplexing for the ordered MPN before layout release because the verified distributor data does not specify those complete values. This page consolidates verified manufacturer specifications, distributor availability information, pin-compatible same-family options, package constraints, and practical engineering guidance. The comparison material also distinguishes genuine drop-in choices from related devices that require firmware or board-level qualification.

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EFM32G840F32-QFN64 - 32MHz Cortex-M3 MCU | Silicon Labs
EFM32G840F32-QFN64

EFM32G840F32-QFN64 - 32MHz Cortex-M3 MCU | Silicon Labs

The Silicon Labs EFM32G840F32-QFN64 is an ARM Cortex-M3 32-bit microcontroller operating up to 32 MHz, with 32 kB of Flash memory, 8 kB of RAM, and 56 digital I/O pins in a 64-QFN package with an exposed pad. It is designed for energy-sensitive embedded systems. A microcontroller is a programmable system-on-chip that integrates a processor core, memory, digital interfaces, timers, analog peripherals, and power-management functions. The EFM32G840F32-QFN64 belongs to the EFM32 Gecko family and combines an ARM Cortex-M3 core with low-power operating techniques, short wake-up behavior, and energy-saving modes for battery-operated and portable equipment. Verified product information identifies 32 kB Flash, 8 kB RAM, 56 digital I/O pins, three 16-bit timers, and operation up to 32 MHz. The device is intended for applications that require compact embedded control, efficient peripheral integration, and low-energy operation. Its 64-QFN package provides a high pin count for digital connectivity in a relatively small surface-mount footprint. The EFM32G840F32-QFN64 is suitable for sensor nodes, industrial monitoring, building automation, portable measurement equipment, connected embedded products, and low-power control systems. The exposed pad supports thermal management when the device dissipates power during operation; PCB copper and thermal design should follow the manufacturer package guidance. When designing around this MCU, verify the exact pin multiplexing, supply requirements, peripheral availability, and package-specific exposed-pad requirements against the manufacturer datasheet. Do not substitute a different package or pin count without reviewing the complete pinout and board footprint. This page consolidates verified manufacturer and distributor information, datasheet access, application context, and replacement-screening guidance. It is intended to help engineers identify the correct EFM32G840F32-QFN64 for embedded designs rather than treating similar ARM MCUs as automatically interchangeable.

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EFM32G840F64-QFN64 - 32MHz Cortex-M3 MCU | Silicon Labs
EFM32G840F64-QFN64

EFM32G840F64-QFN64 - 32MHz Cortex-M3 MCU | Silicon Labs

The Silicon Labs EFM32G840F64-QFN64 is an ARM Cortex-M3 microcontroller operating up to 32 MHz, with 64 kB Flash, 16 kB RAM, and 56 digital I/O pins in a 64-QFN package. Designed for energy-sensitive embedded systems, it combines a low-power Gecko platform, fast wake-up capability, and energy-saving modes for responsive designs with constrained power budgets. A microcontroller is a programmable semiconductor that integrates a processor core, memory, I/O, timers, and communication peripherals on one integrated circuit. Within the product hierarchy, the EFM32G840F64-QFN64 is a 32-bit ARM Cortex-M3 MCU in the EFM32 Gecko family. It executes embedded control logic while providing local digital interfaces, analog functions, and low-power operating modes for connected products. The verified device features include a 32 MHz maximum CPU speed, 64 kB Flash, 16 kB RAM, 56 digital I/O pins, and three 16-bit timers. Distributor data also identifies a 64-QFN package with a 9 mm by 9 mm body and an exposed pad. The package supports surface-mount assembly, while the exposed pad provides the primary thermal connection on the PCB. The Cortex-M3 architecture gives the MCU a 32-bit processing interface suitable for control loops, human-interface logic, communications, and general embedded tasks. The Gecko low-power platform is particularly relevant in battery-operated equipment because the device combines conventional processing with energy-saving modes. Designers should use the Silicon Labs documentation to configure wake behavior, clocks, peripherals, and current-consumption targets for the exact product configuration. Typical uses include industrial sensor nodes, connected meters, portable medical accessories, smart-building controls, compact consumer devices, and low-energy IoT equipment. Its 56 digital I/O pins can support buttons, displays, indicators, and external interface signals, while the three 16-bit timers are useful for timing, pulse generation, and periodic control tasks. A critical design consideration is decoupling and exposed-pad layout. Place the required bypass capacitors close to the supply pins and connect the exposed thermal pad according to the manufacturer's package guidance. Validate the power rails, boot configuration, peripheral pin mapping, and low-power behavior on hardware before production. This page combines verified manufacturer and distributor facts with engineering-focused selection, comparison, sourcing, and design guidance. It is intended to help engineers identify the correct MCU, verify package assumptions, and assess migration options without relying on unverified electrical or lifecycle assumptions.

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EFM32G842F32-QFP64 - 32MHz Cortex-M3 MCU | Silicon Labs
EFM32G842F32-QFP64

EFM32G842F32-QFP64 - 32MHz Cortex-M3 MCU | Silicon Labs

The Silicon Labs EFM32G842F32-QFP64 is a 32-bit ARM Cortex-M3 microcontroller operating up to 32 MHz, with 32 kB of Flash memory, 8 kB of RAM, and 53 digital I/O pins in a 64-pin TQFP package. Its combination of low-power design, fast wake-up capability, and energy-saving operating modes targets embedded systems where battery life and deterministic control are important. A microcontroller is a programmable system-on-chip that integrates a CPU, memory, peripherals, and I/O into one package. The EFM32G842 belongs to the EFM32 Gecko family, which combines an ARM Cortex-M3 processor with energy-management hardware for low-power embedded control. This places it in the hierarchy of embedded microcontroller, 32-bit MCU, ARM Cortex-M3 processor, and semiconductor device. The device provides 32 kB Flash for program storage and 8 kB RAM for working data. The verified manufacturer information also identifies three 16-bit timers and 53 digital I/O pins. The 32 MHz CPU supports responsive control, while low-energy modes and fast wake-up behavior can reduce inactive-system power. Its 2.5 V and 3.3 V supply references are identified in the verified distributor material. The EFM32G842F32-QFP64 is suited to energy-sensitive embedded products, including sensor nodes, industrial monitoring equipment, portable instrumentation, and connected low-power systems. Its timer resources can support periodic measurement, motor or actuator timing, and control-loop tasks. The digital I/O count provides flexibility for buttons, displays, sensors, relays, and communications peripherals, subject to the device's electrical and multiplexing limitations. For PCB design, preserve the exact 64-pin TQFP footprint and verify the complete manufacturer pin assignment before routing. Pay particular attention to supply decoupling, ground-return paths, exposed thermal behavior, and any pins assigned to debug, programming, reset, or alternate functions. Firmware should use the Silicon Labs device support configuration for the exact MPN. This product data combines the verified Silicon Labs device description, distributor specifications, package information, lifecycle-related source material, and application-oriented guidance. It is intended to support initial design review, sourcing, and comparison; final production decisions should be checked against the latest manufacturer datasheet and authorized distribution records. This page synthesizes the supplied manufacturer and distributor information with practical selection context. Because no verified price, detailed timing specification, pin table, or approved cross-brand substitute was supplied, those fields are marked as unavailable rather than inferred.

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EFM32G842F64-QFP64 - 32MHz Cortex-M3 MCU | Silicon Labs
EFM32G842F64-QFP64

EFM32G842F64-QFP64 - 32MHz Cortex-M3 MCU | Silicon Labs

The Silicon Labs EFM32G842F64-QFP64 is a 32-bit ARM Cortex-M3 microcontroller operating up to 32 MHz, with 64 kB of Flash memory and 16 kB of RAM in a 64-TQFP 10 mm × 10 mm package. The device provides 53 digital I/O pins and three 16-bit timers, combining general-purpose embedded control with low-power operation for energy-sensitive equipment. A microcontroller is a compact integrated circuit containing a processor core, memory, peripherals, and I/O. The EFM32G842 belongs to the EFM32 Gecko family and uses the ARM Cortex-M3 RISC core, placing it in the hierarchy MCU → 32-bit microcontroller → embedded processor → semiconductor. Its low-energy architecture, fast wake-up behavior, and energy-saving modes make it suitable for systems that spend substantial time idle or operate from limited power budgets. Verified features include a 32 MHz operating speed, 64 kB Flash, 16 kB RAM, 53 digital I/O pins, and three 16-bit timers. The 1.98 V to 3.8 V supply range supports 2.5 V and 3.3 V system designs. The LCD, AES, and USB-related ecosystem description shown by distributor listings makes the device relevant to human-interface, secure accessory, and connected embedded applications, while the 64-pin package provides a substantial peripheral-routing option for mixed-signal control boards. The Gecko platform emphasizes fast startup and low-energy execution rather than only peak processing speed. This is valuable in portable instruments, battery-powered sensors, industrial controls, and USB peripherals where the average current between activity periods can determine battery life. Firmware should therefore use the device's sleep and wake behavior deliberately rather than treating the 32 MHz CPU frequency as a continuous-power requirement. Typical applications include energy-harvesting sensors, compact industrial controllers, USB-connected human-interface devices, secure embedded accessories, and low-power monitoring systems. The 53 digital I/O pins are useful for status indicators, buttons, relays, displays, and external interface signals, while the timers support periodic sensing, motor timing, or control-loop tasks. PCB design should preserve short, clean return paths around the MCU and decoupling connections. Follow the manufacturer datasheet for the exact pin names, exposed pad requirements, crystal requirements, and decoupling network. Do not assume that another 64-TQFP MCU is interchangeable solely because its package matches; peripheral mapping, voltage tolerance, firmware support, and pin function must be checked before replacement. This page consolidates verified manufacturer and distributor information, distinguishes the target from unverified alternatives, and adds procurement and design guidance that is not normally present in a basic distributor listing.

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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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