微控制器

ATSAM4CMP32CB-AUR

ATSAM4CMP32CB-AUR - Dual-Core 120MHz 2MB Flash MCU | Microchip

The Microchip Technology ATSAM4CMP32CB-AUR is a 32-bit dual-core ARM Cortex-M4/M4F SAM4CM microcontroller operating at 120 MHz with 2MB (2M x 8) Flash memory and hardware cryptography, housed in a 100-pin LQFP (14x14 mm) package. A microcontroller (MCU) is a single-chip embedded computer integrating a processor core, memory, and peripherals on one die. Within the power management hierarchy, the SAM4CM family sits at the system-on-chip (SoC) level: it combines general-purpose MCU functionality (Cortex-M4 with FPU) with a dedicated second core and metrology-class analog peripherals purpose-built for energy measurement, extending Atmel's well-established SAM4 architecture. Key features include a dual-core 120 MHz Cortex-M4/M4F subsystem, 2MB embedded Flash, integrated hardware crypto acceleration, and metrology capability achieving up to class 0.2 accuracy over a dynamic range of 3000:1, per the manufacturer product page. The 7-channel poly-phase front end eliminates discrete metering AFEs, reducing BOM cost and board area. Architecturally, the SAM4CMP32 partitions resources between the two cores, letting one core run metering DSP algorithms while the other handles communication (UART, SPI, I2C), protocol stacks, and UI. Power supplies span 1.2V/1.8V/2.5V/3.3V domains per distributor listings. Typical applications include residential electricity meters, poly-phase industrial energy meters, and industrial power monitoring systems operating across the industrial temperature range. Design consideration: as a factory-programmable metering SoC, confirm the metrology firmware provision and power-domain sequencing early in the design. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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ATSAM4CMP8CA-AUR

ATSAM4CMP8CA-AUR - Dual-Core Cortex-M4 120MHz MCU | Microchip

The Microchip Technology ATSAM4CMP8CA-AUR is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller (SAM4CM series) operating at 120 MHz with 512KB Flash program memory and 128KB SRAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package supplied in tape and reel. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest layer of the embedded computing hierarchy (MCU -> embedded processor -> integrated circuit -> semiconductor). MCUs execute dedicated control tasks in real time, unlike application processors that run general-purpose operating systems. The SAM4CM family extends Microchip's (formerly Atmel) SAM4 ARM Cortex-M portfolio by adding a second Cortex-M4F core for metering and secure applications. Key features of the ATSAM4CMP8CA include its dual-core architecture that partitions measurement and communication workloads, a 120 MHz maximum core clock for high computation throughput, 512KB of embedded Flash for firmware and data logging, and a cryptographic capability highlighted in distributor classifications (crypto, multi-rate metering support). The device operates from a 1.2V core / 3.3V I/O supply arrangement, matching standard industrial logic levels. Technically, the dual Cortex-M4 cores with FPU (M4F) allow deterministic partitioning: one core can run closed-loop metrology sampling while the other handles protocol stacks and user interfaces, reducing real-time contention. Industrial temperature grading (industrial grade per distributor data) supports harsh-environment deployment. Typical applications include polyphase energy meters, industrial control panels, building automation controllers, and secure data concentrators where segregated processing and metering accuracy are required. Design consideration: budget Flash and SRAM carefully across the two cores, and verify power sequencing of the 3.3V I/O domain against the core supply during layout. This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing tiers, drop-in alternatives, and cross-reference guidance in one place.

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ATSAM4CMP8CB-AU

ATSAM4CMP8CB-AU - Dual-Core Cortex-M4 120MHz MCU | Microchip

The Microchip Technology ATSAM4CMP8CB-AU is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller running at 120 MHz with 512 KB (512K x 8) embedded Flash, housed in a 100-pin LQFP (14x14 mm) package. It is part of the SAM4CM series, a system-on-chip solution purpose-built for residential and poly-phase energy metering with class 0.2 metrology accuracy over a 3000:1 dynamic range across the industrial temperature range. A metering system-on-chip (SoC) is a microcontroller that integrates the compute cores, metrology-grade analog front-end support, memory, and communication peripherals required to measure, compute, and communicate energy data in a single device. Within the power management and embedded MCU hierarchy, the SAM4CM family extends Atmel's (now Microchip's) SAM4 and SAM4C families of Cortex-M4 controllers, adding metering-specific integration. Key features include a unique dual ARM Cortex-M4 architecture that lets engineers implement signal processing in one core and application plus communications firmware in a separate, independent partition, improving isolation and safety. Peripherals include EBI/EMI, I2C, IrDA, SPI, and UART/USART connectivity, plus DMA, an LCD controller, power-on reset (POR), PWM, watchdog timer (WDT), and hardware cryptography. Program and data memory can be extended via the external bus interface. Technically, the device operates from 1.2V/3.3V supplies and leverages the SAM4C family's on-chip cache design, with family memory options of up to 2 MB embedded Flash and 304 KB SRAM. The M4F cores include hardware floating-point units, benefiting 3-phase metering DSP computations and FFT-based power-quality analysis at 120 MHz. Typical applications are poly-phase smart energy meters, residential electricity meters, industrial sub-metering, and power-quality monitoring equipment. For design, use the LCD controller segment count and the independent core partitioning early in firmware architecture planning; allocate the metrology pipeline to one core to guarantee deterministic sampling. This page synthesizes distributor pricing data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, verified as of 2026-09-20.

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ATSAM4CMP8CB-AUR

ATSAM4CMP8CB-AUR - Dual-Core 120MHz MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4CMP8CB-AUR is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller (SAM4CM series) operating at 120 MHz with 512 KB of Flash program memory and 128 KB of RAM, housed in a 100-pin LQFP (14x14 mm) package. A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, memory, and programmable peripherals on one die. The SAM4CM extends this concept into a metrology system-on-chip (SoC): it belongs to the power-management hierarchy of smart-meter silicon, where an MCU core, hardware crypto acceleration, and precision metrology engine combine to replace several discrete components. The ATSAM4CMP8CB-AUR is a seamless extension of the Atmel/Microchip SAM4 and SAM4C families, preserving software and peripheral compatibility while adding metrology features. Key features include class 0.2 metrology accuracy over a 3000:1 dynamic range, dual Cortex-M4/M4F cores for concurrent computation and communication, a 512 KB (512K x 8) Flash array, 128 KB RAM, and hardware cryptography targeted at smart-grid security. Connectivity peripherals include EBI/EMI, I2C, IrDA, SPI, and UART/USART, allowing the chip to drive both analog front-end work and communication stacks simultaneously. Technically, the dual-core architecture partitions tasks: one core handles 3-phase metrology computation (RMS, power, energy accumulation), while the other runs protocol and UI stacks such as DLMS/COSEM. The industrial temperature grade and green/RoHS LQFP packaging support direct deployment in outdoor meter enclosures. Mouser describes the device as 'LQFP, Green, IND TEMP, CRYPTO, 3ph SOC, MRLC, 1024K', reflecting the SAM4CM metrology SoC positioning. Typical applications include residential and poly-phase (3-phase) electricity meters, industrial energy monitoring, smart-grid security gateways, and power-quality analysis instruments requiring class 0.2 accuracy. Design consideration: budget the metrology analog front-end routing to keep sense lines away from switching supplies; the class 0.2 accuracy claim depends on clean supply and reference design following the Microchip reference meter design. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4CMP8CC-AU

ATSAM4CMP8CC-AU - Dual Cortex-M4 120MHz 512KB MCU | Microchip

The Microchip Technology ATSAM4CMP8CC-AU is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller with 512KB (512K x 8) embedded Flash, running at up to 120 MHz, housed in a 100-pin LQFP (14x14 mm) package. It is a metrology-enabled system-on-chip solution designed for residential and poly-phase energy metering. A metrology microcontroller (MCU) is a class of microcontroller that integrates a high-accuracy analog front end and metrology computation engine alongside the general-purpose processing core. Within the power-management IC hierarchy, the ATSAM4CMP8CC-AU sits in the ARM Cortex-M4-based SAM4 family - a seamless extension of Atmel's SAM4 and SAM4C families of microcontrollers - combining compute, communications, and metrology in a single SoC. Key features include the unique dual ARM Cortex-M4 architecture, which supports independent implementation of signal processing, application, and communications firmware in separate partitions; up to class 0.2 metrology accuracy over a dynamic range of 3000:1; industrial temperature range operation (-40C to +85C); and embedded crypto functionality for smart-grid security. On-chip cache and SRAM of up to 304 Kbytes across the SAM4CM series support demanding firmware workloads. Technical depth: the dual-core Cortex-M4F (with hardware floating point) partitions metrology from communications tasks, improving determinism and security isolation. The ability to extend program and data memory via parallel memory interfaces allows designs to grow beyond embedded Flash limits. Firmware is developed through the SAM4 ecosystem with standard ARM CMSIS tooling. Typical applications include poly-phase energy meters, residential smart meters, smart grid security and communications nodes, and industrial metering equipment requiring class 0.2 accuracy across a 3000:1 dynamic range. Design consideration: partition metrology firmware and communication stacks across the two Cortex-M4 cores early in the project; this determines SRAM allocation and crypto key storage strategy and is difficult to change late in development. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4CMP8CC-AUR

ATSAM4CMP8CC-AUR - Dual-Core 120MHz Metering MCU | Microchip

The Microchip Technology ATSAM4CMP8CC-AUR is a 32-bit dual-core ARM Cortex-M4/M4F metrology system-on-chip microcontroller running at 120 MHz with 512 KB (512K x 8) Flash, housed in a 100-pin LQFP (14x14 mm) surface-mount package. A metrology microcontroller is a specialized class of MCU within the power-management and smart-grid semiconductor hierarchy that integrates precision analog front-ends and metrology computation engines alongside a general-purpose processing core. Where a standard Cortex-M MCU only runs application firmware, a metering SoC such as the SAM4CM also digitizes current and voltage channels and computes active, reactive, and apparent energy to utility-grade accuracy, removing the need for a separate dedicated metering IC. Key features of the ATSAM4CMP8CC include dual-core operation, in which one Cortex-M4 core executes the metering algorithms while the second core handles communications and application tasks, isolating metrology integrity from protocol stacks. The device achieves poly-phase, 7-channel metrology with class 0.2 accuracy across a 3000:1 dynamic range, and integrates hardware cryptographic acceleration for smart-grid security. The SAM4CM architecture is a seamless extension of the Atmel (now Microchip) SAM4 and SAM4C families, allowing code reuse across existing smart-meter platforms. Peripherals shared with the SAM4C line, including USART, SPI, TWI, and PWM controllers, simplify board designs that combine metering with PLC, RF, or cellular communication front-ends. Typical applications include residential and poly-phase electricity meters, industrial sub-meters, smart energy gateways, and grid-security communication concentrators, where the on-chip metrology engine and crypto hardware directly address accuracy certification and data-integrity requirements. When designing with the SAM4CMP8, budget the analog front-end calibration effort early: class 0.2 accuracy over a 3000:1 dynamic range depends on external shunt or CT selection and factory calibration procedures, not only on the SoC itself. This page synthesizes distributor pricing, drop-in family alternatives, and practical design guidance that are not consolidated in the manufacturer datasheet, adding information gain for sourcing and engineering evaluation.

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ATSAM4CMS16CB-AU

ATSAM4CMS16CB-AU - Dual-Core Cortex-M4 120MHz MCU | Microchip

The Microchip Technology ATSAM4CMS16CB-AU is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller from the SAM4CM series, operating at 120 MHz with 1 MB of embedded Flash memory, 128 KB of SRAM, packaged in a 100-pin LQFP (14x14 mm) surface-mount package with industrial temperature range. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the heart of embedded systems. The SAM4CM sits within the broader hierarchy of ARM Cortex-M based 32-bit MCUs, part of Microchip's SAM4 family, and is specifically architected as a system-on-chip (SoC) solution for metering applications where signal processing and communications firmware must run in independent, isolated partitions. Key features include the unique dual ARM Cortex-M4/M4F core architecture, which allows metrology (DSP-heavy) computation and application/communications code to execute on separate cores; hardware cryptographic acceleration as highlighted by distributors (CRYPTO designation); and a supply range of 1.62V to 3.6V per verified distributor data. The on-chip cache and up to 2 MB Flash support capability in the wider family gives headroom for complex firmware images. According to Microchip, the SAM4CMS16 is a system-on-chip solution for residential and single-phase metering applications achieving up to class 0.2 metrology accuracy over a dynamic range of 3000:1 across an industrial temperature range. The dual-core partitioning enables secure, independent firmware domains that simplify metering certification workflows. Typical applications include single-phase energy meters, smart grid endpoints, industrial power monitoring, and general-purpose control tasks benefiting from dual-core isolation and DSP instructions. Design consideration: choose the CM (metering) variant only when class 0.2 measurement or core isolation is genuinely required; the single-core SAM4S in the same LQFP-100 footprint is a lower-cost fit for general control. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4CMS32CA-AU

ATSAM4CMS32CA-AU - 120MHz Dual-Core ARM MCU | Microchip

The Microchip Technology ATSAM4CMS32CA-AU is a 32-bit dual-core ARM Cortex-M4/M4F SAM4CM microcontroller operating at 120 MHz with 2 MB (2M x 8) of embedded Flash and 256 KB of SRAM, housed in a 100-pin LQFP (14 x 14 mm) surface-mount package for industrial temperature applications. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip, forming the lowest layer of the embedded-system hierarchy: MCU -> embedded processor -> system-on-chip -> computing platform. The SAM4CM family belongs to Microchip's (formerly Atmel's) ARM-based SAM product line, which spans the Cortex-M0+, M3, M4, and M7 classes. Dual-core MCUs such as this partition application processing and secure or supervisory tasks onto separate cores, improving both real-time determinism and security isolation. Key features include the dual-core 120 MHz ARM Cortex-M4 with hardware floating-point unit (M4F), 2 MB of on-chip Flash for large firmware images, 256 KB of SRAM, and an integrated hardware cryptographic engine for secure boot and key storage, as noted by Microchip's product listing (CRYPTO suffix). Peripheral connectivity covers EBI/EMI external bus interface, I2C, IrDA, SPI, and UART/USART serial links, enabling multi-board communication and external memory expansion. Architecturally, the SAM4CM leverages the ARMv7E-M architecture with DSP instructions and single-cycle MAC, and the second core offloads deterministic tasks such as secure element emulation or fieldbus protocol stacks. The LFQFP package with gull-wing terminals supports standard surface-mount assembly and reflow, and the industrial temperature grade supports -40C to +85C environments (per Partstack temperature-grade data). Typical applications include industrial automation and motor control nodes, secure IoT gateways and payment terminals requiring the crypto engine, and communication concentrators using the dual UART/USART and EBI interfaces for multi-channel data acquisition. For design, budget the core supply (VDDCORE) and I/O supply domains separately, since the SAM4CM uses a dedicated 1.2 V core domain noted in distributor listings; proper decoupling of both domains is essential for 120 MHz operation. This page synthesizes distributor pricing, drop-in family alternatives, application guidance, and design notes not found in the manufacturer datasheet.

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ATSAM4CMS32CA-AUR

ATSAM4CMS32CA-AUR - Dual-Core 120MHz 2MB Flash MCU | Microchip

The Microchip Technology ATSAM4CMS32CA-AUR is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller (SAM4CM series) running at up to 120 MHz with 2 MB (2M x 8) embedded Flash memory and 256 KB SRAM, housed in a 100-pin LQFP (14 x 14 mm) surface-mount package rated for -40C to +85C operation. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, forming the lowest tier of the embedded processing hierarchy: microcontroller -> embedded processor -> SoC. The ATSAM4CM family belongs to Microchip's SAM4 ARM Flash MCU portfolio and is unusual in offering two independent Cortex-M4F cores with floating-point units on a single device. Key features include the dual-core 120 MHz Cortex-M4F architecture, 2 MB on-chip Flash, 256 KB SRAM, a hardware cryptographic engine (CRYPTO per Mouser listing), and industrial temperature range. The MRLA (microcontroller reprogramming) capability and dual-phase operation noted in distributor listings support secure, field-updatable designs. Technically, each Cortex-M4F core integrates a hardware FPU, DSP instructions (SIMD, MAC), and a 3-stage pipeline, letting one core handle application logic while the second manages secure or real-time tasks. Peripherals and bus matrix arbitration allow the cores to share Flash and SRAM with hardware mutual exclusion. Typical applications include industrial control and automation, secure connected IoT nodes exploiting the crypto engine, and motor/power conversion systems where one core runs control loops while the other handles communication. Design consideration: dual-core Flash MCUs require careful partitioning of code and shared RAM; consult the Microchip SAM4CM family datasheet for core-to-peripheral mapping before layout. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. Pricing shown is as of 2026-09-20.

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ATSAM4CMS32CB-AUR

ATSAM4CMS32CB-AUR - Dual-Core 120MHz Metering MCU 2MB | Microchip

The Microchip Technology ATSAM4CMS32CB-AUR is a 32-bit dual-core ARM Cortex-M4/M4F metering system-on-chip microcontroller running at 120 MHz, with 2 MB (2M x 8) of embedded Flash and 304 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package. It operates from a 1.62 V to 3.6 V supply across an industrial -40C to +85C temperature range. A metering MCU (metering SoC) is a class of microcontroller that integrates dedicated signal-processing and metrology resources to measure electrical energy with high accuracy. In the power-management hierarchy, it sits between general-purpose MCUs and dedicated energy-metering ASICs, combining a general-purpose CPU core with a metrology-oriented co-processing architecture in one chip. Key features include the unique dual ARM Cortex-M4 architecture, which partitions signal processing from application and communications firmware, 2 MB Flash with on-chip cache for extended program storage, class 0.2 metrology accuracy over a 3000:1 dynamic range, and integrated cryptographic hardware for secure data handling. The 10-bit ADC and 57 GPIOs support direct sensing front-ends and rich peripheral connectivity. Technically, the SAM4CM family is a seamless extension of Atmel's proven SAM4 line: one core runs metrology DSP routines while the second runs protocol stacks and application logic, with parallel memory expansion for program and data growth. Partitioned firmware domains reduce real-time contention and simplify certification of metering algorithms. Typical applications include residential and single-phase energy meters, industrial sub-metering, smart-grid nodes, and power-quality monitoring equipment, where 0.2-class accuracy across a wide dynamic range is mandatory. Design consideration: budget the 120 MHz dual-core clock tree and decouple the 1.62-3.6 V rail carefully; metrology accuracy depends on a clean analog supply for the ADC front-end. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4CMS4CB-AU

ATSAM4CMS4CB-AU - Dual-Core 120MHz MCU 256KB | Microchip

The Microchip Technology ATSAM4CMS4CB-AU is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller running at 120 MHz with 256KB of embedded Flash and 128KB of SRAM, housed in a 100-pin LQFP (14x14 mm) tray package from the SAM4CM metrology family. A microcontroller unit (MCU) integrates a processor core, program memory, data memory, and peripheral set on a single chip, forming the compute layer of an embedded system. The SAM4CM series extends Microchip's (formerly Atmel's) SAM4C family into the smart metering domain, adding a metrology analog front end (AFE) and hardware cryptography to the general-purpose Cortex-M4 MCU architecture for single-chip energy measurement platforms. Key features of the ATSAM4CMS4CB include the dual-core Cortex-M4/M4F architecture, where one core handles application firmware and the second core can be dedicated to metrology or security tasks, delivering deterministic real-time behavior at up to 120 MHz. The integrated crypto engine accelerates authentication and encryption for smart-grid communication stacks, while the built-in single-phase, 4-channel metrology AFE supports residential and industrial metering up to class 0.2 accuracy over a dynamic range of 3000:1, according to Microchip's product documentation. Technical depth: the SAM4CM combines a high-performance RISC pipeline with FPU support (Cortex-M4F), RAM totaling 128KB, and a peripheral set suited to metering and communications. The device operates from a 1.2V core domain with integrated regulators, simplifying power-tree design in single-phase meters. Typical applications include residential and single-phase electricity meters, smart-grid data concentrators, and secure industrial metrology nodes, where the combination of metrology AFE, cryptography, and dual-core processing eliminates a separate metrology IC. Design consideration: budget Flash and RAM early - the 256KB Flash / 128KB RAM of the CB density variant should be verified against bootloader plus application footprint before PCB commitment. This page synthesizes distributor listings, family-level cross-reference data, and practical selection notes beyond what any single datasheet page provides.

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ATSAM4CMS4CB-AUR

ATSAM4CMS4CB-AUR - Dual Cortex-M4 120MHz MCU | Microchip

The Microchip Technology ATSAM4CMS4CB-AUR is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller running at 120 MHz, with 256 KB of embedded FLASH and 128 KB of RAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals onto one die, sitting at the device level of the embedded-systems hierarchy (MCU -> SoC -> embedded system). The SAM4CM family extends Atmel/Microchip's SAM4C family of ARM Cortex-M4 microcontrollers, purpose-built for smart energy metering where computation, communication, and security must coexist on one chip. Key features include a unique dual-core ARM Cortex-M4/M4F architecture with FPU that lets metrology signal processing run independently from communications and application firmware, metrology-grade front-end support for residential and single-phase metering at up to class 0.2 accuracy over a 3000:1 dynamic range, and hardware cryptographic acceleration for smart-grid security. Connectivity peripherals include EBI/EMI, I2C, IrDA, SPI, and UART/USART, and the EBI/EMI interface allows extension of program and data memory via parallel memories. Technically, the dual-core partitioning enables the metering engine to sample and compute energy quantities with deterministic timing while the second core handles protocols such as DLMS/COSEM and wireless communication, without mutual interference. The Cortex-M4F hardware FPU accelerates FFT and RMS calculations essential to metrology. Typical applications include single-phase residential electricity meters, industrial sub-metering, smart-grid gateways, and secure data concentrators. Design consideration: because the device targets metrology accuracy, PCB layout must separate the analog front-end ground from switching noise sources, and the flash size (256 KB) should be checked against combined application plus bootloader footprint. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4CMS4CC-AU

ATSAM4CMS4CC-AU - Dual-Core 120MHz MCU 256KB | Microchip

The Microchip Technology ATSAM4CMS4CC-AU is a 32-bit dual-core ARM Cortex-M4 microcontroller (metrology SoC) running at 120 MHz with 256 KB embedded flash, crypto acceleration, and a 100-pin LQFP (14x14 mm) package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, sitting within the broader hierarchy of semiconductor devices under embedded processors and system-on-chip (SoC) solutions. The SAM4CM subfamily extends Microchip's SAM4C ARM Cortex-M4 family by adding metrology-specific signal processing hardware aimed at energy metering. Key features of the ATSAM4CMS4CC-AU include its unique dual-core ARM Cortex-M4 architecture, which separates signal processing firmware from application and communications firmware in independent memory partitions, improving security and real-time determinism. It delivers up to class 0.2 metrology accuracy over a dynamic range of 3000:1, integrates a cryptographic accelerator for smart-grid security, and operates over the full industrial temperature range. Technically, the SAM4CM SoC couples two 120 MHz Cortex-M4 processors with on-chip cache, embedded flash (256 KB on this density grade), SRAM, and a rich peripheral set. The parallel memory bus capability allows program and data memory extension beyond the embedded flash, supporting larger metering application images. Typical applications include residential and single-phase electricity meters, smart-grid communication concentrators, industrial energy monitoring, and secure data-concentrator nodes. The metrology acceleration and crypto engine make this MCU particularly well-suited to tariff metering with encrypted telemetry. Design consideration: verify power-supply sequencing and use the manufacturer metrology reference designs to achieve class 0.2 accuracy; PCB layout of analog metering front ends directly affects dynamic range. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4CMS8CA-AU

ATSAM4CMS8CA-AU - Dual-Core 120MHz MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4CMS8CA-AU is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller from the SAM4CM series, operating at 120 MHz with 512KB of embedded Flash memory and 128KB of SRAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package supplied in trays. A microcontroller (MCU) integrates a processor core, program memory, data memory, and peripheral functions onto a single silicon die, serving as the computational heart of an embedded system. Within the power-management hierarchy, the ATSAM4CM family sits in Microchip's high-performance 32-bit MCU portfolio, above the ARM Cortex-M3 based SAM3 and SAM4S families, and is one of the few mainstream MCUs to offer a true dual-core Cortex-M4 configuration for partitioned safety or functional-separation designs. Key features include a dual-core architecture (one Cortex-M4 with floating-point unit and one Cortex-M4F companion core) for concurrent workloads, 512KB (512K x 8) of Flash program memory, and a rich peripheral set typical of the SAM4CM series. The device operates from a 1.2V core / 3.3V I-O supply domain per FindIC specification data, and is graded for industrial temperature environments. Technically, the dual Cortex-M4 arrangement allows developers to run a real-time control task on one core while the second core handles communications, user interface, or safety-monitoring firmware, reducing the need for external co-processors. The ARM Cortex-M4 with FPU executes DSP instructions natively, supporting motor control, digital filtering, and sensor-fusion workloads at 120 MHz. Typical applications include industrial automation controllers, motor drives, battery-management and power-conversion systems, and communication gateways where deterministic dual-core partitioning is valuable. When designing with this device, verify the core and I/O supply sequencing and allocate Flash headroom for dual-core firmware images, since the 512KB array is shared across both cores. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, adding selection value for engineers comparing SAM4CM options.

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ATSAM4CMS8CA-AUR

ATSAM4CMS8CA-AUR - Dual-Core 120MHz MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4CMS8CA-AUR is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller running at 120 MHz with 512 KB (512K x 8) Flash memory and 128 KB SRAM, housed in a 100-pin LQFP (14 x 14 mm) surface-mount package. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, program memory, data memory, and peripheral functions such as timers, serial interfaces, and analog converters. MCUs sit at the heart of the embedded systems hierarchy: microcontroller -> embedded processor -> system-on-chip -> semiconductor integrated circuit, and are the dominant computing element in industrial, automotive, and IoT devices. Key differentiating features of the ATSAM4CMS8CA-AUR include its dual-core architecture, which allows one Cortex-M4F core to run the main application while the second core handles communication or safety tasks, a supply voltage range of 1.62V to 3.6V for battery-friendly operation, and an industrial temperature grade suitable for harsh environments. The 120 MHz core speed with single-cycle floating-point hardware (M4F) supports DSP-class workloads such as motor control and digital filtering. Technically, the SAM4CM series is built on the ARMv7E-M architecture with Thumb-2 instruction set support. The dual-core configuration provides deterministic task partitioning, and the large 512 KB Flash permits field-updatable firmware with dual-bank-style boot strategies, while 128 KB SRAM supports substantial buffering for communication stacks and real-time data acquisition. Typical applications include industrial motor control and factory automation, low-power portable and battery-operated devices, and networked sensor nodes using the integrated serial peripherals. The industrial temperature grade and RoHS-compliant LQFP package fit demanding embedded designs. A key design consideration: the 1.62V to 3.6V supply range permits direct Li-ion or 3.3V rail operation, but PCB decoupling and power-rail sequencing per the manufacturer datasheet should be followed carefully. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4CMS8CC-AU

ATSAM4CMS8CC-AU - Dual-Core 120MHz Metering MCU | Microchip

The Microchip Technology ATSAM4CMS8CC-AU is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller (SAM4CM series) running at 120 MHz with 512 KB (512K x 8) embedded FLASH, housed in a 100-pin LQFP (14x14 mm) surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, forming the lowest tier of the embedded processing hierarchy (MCU -> embedded processor -> system-on-chip -> semiconductor). The SAM4CM extends this concept into a metering system-on-chip (SoC), purpose-built for energy measurement where signal processing and application firmware must run independently and concurrently. Key features include the unique dual ARM Cortex-M4 architecture, which allows metrology signal-processing code and application/communications firmware to execute in separate, independent partitions, plus hardware cryptographic acceleration, industrial temperature range operation, and on-chip cache supporting extended program and data memory via parallel interfaces. According to Microchip, the SAM4CMS8 achieves class 0.2 metrology accuracy over a dynamic range of 3000:1 for residential and single-phase metering. Technically, the device is a seamless extension of Atmel's SAM4 family and the SAM4C family, pairing the Cortex-M4 with its FPU (M4F) on both cores for DSP-heavy metering computations. Embedded flash of 512 KB and generous SRAM support complex multi-phase firmware images, while the crypto engine protects billing data and firmware IP in smart-grid deployments. Typical applications include residential electricity meters, single-phase energy meters requiring class 0.2 accuracy, and industrial power-monitoring equipment where dual-core partitioning separates safety-critical metrology from networked communications stacks. When designing with this part, plan flash partitioning early so the metrology core and application core have deterministic code space, and verify the 100-LQFP thermal footprint against your power budget at 120 MHz. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4CMS8CC-AUR

ATSAM4CMS8CC-AUR - Dual-Core Cortex-M4 Metering MCU | Microchip

The Microchip Technology ATSAM4CMS8CC-AUR is a 32-bit dual-core ARM Cortex-M4 microcontroller for metering systems-on-chip, running at up to 120 MHz with 512 KB embedded Flash and 128 KB SRAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package. Per DigiKey, it integrates a hardware cryptographic engine and targets residential and single-phase energy metering at up to class 0.2 metrology accuracy over a 3000:1 dynamic range. A microcontroller (MCU) is a complete computing system on a single chip, combining a processor core, memory, and peripherals. The SAM4CM series belongs to the metering SoC tier of the broader ARM Cortex-M microcontroller family, which spans entry-level Cortex-M0+ parts up to high-performance Cortex-M7 devices. Metering SoCs add metrology-grade analog front ends and security features not found in general-purpose MCUs. Key features include dual independent Cortex-M4 cores that allow one processor to run metrology algorithms while the other handles application logic, communication, and UI tasks, improving real-time determinism. The hardware crypto engine accelerates AES-class encryption for secure data logging and anti-tamper designs required in utility infrastructure. The industrial temperature grade (-40C to +85C) and RoHS-compliant green LQFP package support harsh outdoor meter environments. Architecturally, the ATSAM4CMS8 extends Atmel/Microchip's SAM4 family, sharing peripherals, toolchains, and software with single-core SAM4S devices, which simplifies migration. The second core offloads fixed-point DSP metrology computations such as RMS, power, and energy accumulation, leaving the primary core free for protocol stacks like DLMS/COSEM. Typical applications include single-phase residential smart meters, industrial sub-metering panels, and power-quality monitoring nodes where accuracy class 0.2 and secure firmware are mandated. Its Flash density also supports over-the-air firmware update images in the field. Design consideration: dual-core resource arbitration must be planned early - use the shared SRAM with hardware semaphores and reserve the metrology core's interrupt budget, as documented in the Microchip SAM4CM family datasheet. This page synthesizes distributor pricing from five sources, drop-in family alternatives, and practical design guidance not found in the manufacturer datasheet alone. Pricing as of 2026-09-20.

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ATSAM4CP16B-AHU-Y

ATSAM4CP16B-AHU-Y - Dual-Core Cortex-M4 120MHz MCU | Microchip

The Microchip ATSAM4CP16B-AHU-Y is a 32-bit dual-core ARM Cortex-M4 microcontroller IC running at 120 MHz with 1 MB (1M x 8) FLASH and 152 KB SRAM, housed in a 176-pin LQFP (24 x 24 mm) surface-mount package. An MCU (microcontroller unit) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the lowest level of the embedded computing hierarchy: microcontroller -> embedded processor -> semiconductor IC. The SAM4CP series belongs to Microchip's (formerly Atmel) SAM4 ARM Cortex-M4 family and is purpose-built for Power Line Communication (PLC) applications. Each package integrates two independently programmable Cortex-M4 cores plus a dedicated PLC modem supporting PRIME v1.3 and v1.4, making it a complete System-on-Chip solution for smart-grid and metering infrastructure. Key differentiating features include the dual-core 120 MHz Cortex-M4/M4F architecture, 1 MB embedded Flash, a PLC modem capable of baud rates from 5.4 kbps up to 128 kbps with independently selectable transmission bands up to 472 kHz, and an industrial operating temperature range. The supply voltage spans 1.08V to 3.6V, enabling battery-friendly and 3.3V rail designs. Technically, the two Cortex-M4 cores partition application duties: one core typically runs the PRIME protocol stack and network management while the second handles application logic such as metering computation and display control, reducing real-time contention versus single-core solutions. The integrated S-FSK (Spread Frequency Shift Keying) PHY removes the need for an external PLC modem chipset. Typical applications include smart electricity meters, PRIME-compliant data concentrators, streetlighting control nodes, and other smart-grid communication endpoints that require certified PLC connectivity over low-voltage or medium-voltage power lines. Design consideration: the 1.08V minimum supply must be respected during brownout; use the device's supervision features and verify the analog front-end matching network for the target PLC band to maximize coupling efficiency on the power line. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4CP16C-AHU-Y

ATSAM4CP16C-AHU-Y - Dual-Core 120MHz MCU 1MB Flash | Microchip

The Microchip ATSAM4CP16C-AHU-Y is a 32-bit dual-core ARM Cortex-M4 microcontroller operating at up to 120 MHz per core, with 1 MB of embedded Flash, 128 KB of SRAM, and an integrated G3-PLC (Power Line Communication) modem, housed in a 176-pin LQFP (24x24 mm) package. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals to execute embedded control tasks. Within the system hierarchy, the ATSAM4CP16C sits in the smart-energy MCU class: microcontroller -> 32-bit ARM MCU -> ARM Cortex-M4 family -> Atmel SMART energy portfolio. Dual-core MCUs partition safety-critical or real-time workloads (such as PLC modem handling) from application logic, improving determinism and security in one package. Key features include two Cortex-M4/M4F cores each running at 120 MHz with FPU, on-chip cache for each core, an advanced cryptographic engine for secure communication, and a G3-PLC modem supporting CENELEC, ARIB, and FCC profiles as defined by the G3-PLC specification. The supply range spans 1.08V to 3.6V, and the industrial temperature grade covers -40C to +85C (IND TEMP A). Technically, the stacked-die construction integrates the SAM4C MCU die with the PLC modem circuitry, delivering a complete G3-PLC node on a single footprint. The cryptographic engine accelerates AES-based authentication and encryption required by modern smart-grid protocols, offloading both cores. Typical applications include smart electricity meters, streetlighting controllers, solar inverter monitoring, and home-area-network gateways where power-line communication replaces dedicated wiring. When designing, budget the dual-core flash allocation carefully - both cores share the 1 MB Flash, and modem firmware residency affects application space. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4E16CA-AN

ATSAM4E16CA-AN - 120MHz Cortex-M4, 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4E16CA-AN is a 32-bit ARM Cortex-M4 microcontroller with a floating point unit, running at up to 120 MHz, with 1 MB of embedded Flash and 128 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, forming the lowest level of the embedded-system hierarchy: MCU -> embedded processor -> system-on-chip -> computing platform. The SAM4E series belongs to Microchip's SMART ARM-based Flash MCU family, positioned for connected industrial and smart-energy applications that need both DSP-class math performance and Ethernet connectivity in a single chip. Key features of the ATSAM4E16CA-AN include the ARM Cortex-M4 core with 2 KB instruction cache, a hardware Floating Point Unit (FPU) and DSP instructions, a Memory Protection Unit (MPU), Thumb-2 instruction set support, and a supply range of 1.62 V to 3.6 V. The SAM4E series integrates an Ethernet MAC, making it distinct from the otherwise similar SAM4C series, which targets smart energy metering without Ethernet. Architecturally, the Cortex-M4 achieves high data bandwidth through its Harvard bus structure and the 2 KB cache, while the FPU executes single-precision floating-point math in hardware - valuable for control loops, protocol stacks, and measurement algorithms that would otherwise burden the CPU with software emulation. Typical applications include industrial control and automation nodes, smart energy metering gateways, building control, and networked sensors that use the on-chip Ethernet MAC for fieldbus or IoT backhaul. When designing with this device, plan for decoupling of the multiple supply domains (1.2 V core domain is internally regulated; 2.5 V/3.3 V I/O and analog domains per the datasheet) and verify the 100-LQFP (14x14) footprint, because suffix variants differ in packing rather than footprint. This page synthesizes distributor pricing, same-family drop-in alternatives, and design notes not consolidated in the manufacturer datasheet.

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ATSAM4E16CA-AU

ATSAM4E16CA-AU - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4E16CA-AU is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 1 MB (1024 KB) embedded Flash, 128 KB SRAM and a 2 KB cache, housed in a 100-pin LQFP (14x14 mm) surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, sitting at the lowest level of the embedded-systems hierarchy: MCU -> embedded processor -> system-on-chip -> computing platform. The SAM4E family belongs to Microchip (formerly Atmel) ARM-based MCU portfolio and is positioned for connectivity-rich, computation-oriented embedded designs. Key features of the ATSAM4E16CA-AU include the Cortex-M4 core with DSP instructions, a hardware Floating Point Unit (FPU), Thumb-2 instruction support, and a Memory Protection Unit (MPU). The 2 KB cache and high-bandwidth bus architecture sustain near-zero-wait-state execution from Flash at the full 120 MHz clock rate. Industrial temperature support (-40C to +85C) and RoHS-compliant green packaging suit harsh-environment deployments. Technically, the SAM4E series differentiates itself with advanced connectivity peripherals and Ethernet support within the family, paired with the FPU-accelerated core for control loops, signal processing, and protocol stacks. Multiple low-power modes, a rich clock tree with PLLs, DMA channels, and a broad peripheral set (USART, SPI, TWI/I2C, ADC, timers, PWM) reduce external component count in typical designs. Typical applications include industrial automation and control nodes, networked sensors and gateways leveraging Ethernet-class connectivity, motor control and power conversion thanks to the FPU and DSP instructions, and embedded systems needing substantial 1 MB Flash for large firmware, file systems, or OTA update banks. Design consideration: the -AU suffix denotes the 100-LQFP (14x14) tape-and-reel green industrial part; footprint-compatible family members with smaller Flash (e.g., ATSAM4E8CA-AU) enable BOM cost scaling without PCB redesign. This page synthesizes distributor pricing, same-package drop-in alternatives, design notes, and application guidance not consolidated in the manufacturer datasheet.

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ATSAM4E16CA-AUR

ATSAM4E16CA-AUR - 120MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4E16CA-AUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 1 MB (1M x 8) embedded Flash, 128 KB SRAM, and a 100-pin LQFP (14x14 mm) package. It integrates a floating point unit (FPU), DSP instructions, Thumb-2 instruction set, a 2 KB instruction cache, a Memory Protection Unit (MPU), and a 10/100 Mbps Ethernet MAC. A microcontroller (MCU) is a complete computing system on a single chip, combining a processor core, program memory, data memory, and a rich set of peripherals. The SAM4E family sits within Microchip's ARM-based MCU hierarchy: Cortex-M4 core -> SAM4E series -> ARM MCU portfolio -> embedded processing, serving as the central controller in a larger system of sensors, actuators, and communication interfaces. Key features include the 120 MHz Cortex-M4 with FPU for math-intensive control loops, 1 MB Flash for large code images with in-field update capability, dual 12-bit ADCs (16 channels) and dual 12-bit DACs (2 channels), and an integrated Ethernet controller that eliminates an external MAC. Peripherals such as USB, USARTs, SPI, and a PWM controller support connectivity and motion control applications. Technically, the SAM4E16C uses a high data bandwidth multi-layer bus architecture with the 2 KB cache improving flash execution efficiency at 120 MHz. Supply voltage spans 1.62 V to 3.6 V, with the core powered internally from 1.2 V per the datasheet, and an internal oscillator simplifies clocking. Typical applications include industrial networking nodes, Ethernet-connected IoT gateways, motor control and power conversion, and building automation controllers. A key design consideration: the ADC reference and analog supply require clean routing on the VDDA pin, and full 120 MHz operation should be validated across the 1.62 V to 3.6 V supply range per Microchip's electrical characteristics. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4E16CA-CU

ATSAM4E16CA-CU - 120MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4E16CA-CU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz with 1 MB (1M x 8) of embedded flash memory, 128 KB of SRAM, and a 100-ball TFBGA (9x9 mm) package. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the heart of embedded systems. The SAM4E family sits within Microchip's SMART ARM-based MCU portfolio, positioned above the Cortex-M3 based SAM3/SAM4N lines by adding a floating point unit (FPU), DSP instructions, and high-bandwidth peripherals such as an Ethernet MAC for industrial connectivity applications. Key features include the ARM Cortex-M4 core with a 2 KB instruction cache operating at up to 120 MHz, hardware FPU and Thumb-2 instruction support for efficient math-intensive firmware, a Memory Protection Unit (MPU) for robust multi-task software, and a peripheral set spanning UART/USART, SPI, TWI (I2C), PWM, ADC, and Ethernet connectivity. The 1 MB flash supports in-system programming, while the high data bandwidth architecture suits control loops and protocol stacks simultaneously. Technically, the device integrates the Cortex-M4 with DSP extensions, enabling single-cycle MAC operations useful for digital filtering and motor control algorithms. The 2 KB cache reduces flash wait-state penalties at 120 MHz, and the MPU allows privileged/unprivileged code partitioning for safety-oriented designs. Supply operation is specified at 1.2 V core / 3.3 V I/O per distributor data, with industrial temperature support. Typical applications include industrial automation and networking nodes using the on-chip Ethernet MAC, motor control and power conversion leveraging the FPU and PWM peripherals, and connected sensing or gateways that need flash density for communication stacks. The ATSAM4E16CA-CU fits these roles where 120 MHz performance, 1 MB flash, and wired connectivity converge. Design-wise, plan power sequencing between the 3.3 V I/O domain and the 1.2 V core domain, and use bypass capacitors on all VDDIO/VDDCORE ball groups per the datasheet power distribution guidelines. Firmware can be developed in Atmel Studio / Microchip Studio with the SAM4E software package, and the device is programmed via SWD or JTAG. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a complete selection view in one place.

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ATSAM4E16CA-CUR

ATSAM4E16CA-CUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4E16CA-CUR is a 32-bit ARM Cortex-M4 microcontroller with 1 MB (1M x 8) on-chip Flash memory, 128 KB SRAM, and a core clock speed of up to 120 MHz, housed in a 100-ball TFBGA (9x9 mm) package. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and a rich set of peripherals into one chip, forming the complete embedded controller at the heart of an electronic system. Within the MCU hierarchy, the SAM4E family sits in the high-performance 32-bit tier, above 8-bit MCUs such as the PIC16 series and below application processors, and is commonly deployed in industrial control, consumer products, and connectivity equipment. Key differentiating features include the ARM Cortex-M4 core with an integrated Floating Point Unit (FPU), DSP instructions, and Thumb-2 instruction set, which enable efficient signal processing and math-heavy firmware. The 2 KB cache increases effective memory bandwidth, and the Memory Protection Unit (MPU) supports robust, partitioned firmware architectures. The 1 MB Flash supports complex application images, while the 100-TFBGA (9x9) footprint delivers high I/O density in a compact surface-mount package. Technically, the SAM4E architecture combines a high data bandwidth bus matrix with the 120 MHz Cortex-M4, allowing Flash execution, DMA transfers, and peripheral activity to proceed concurrently. The DSP instructions accelerate filter algorithms, while the hardware FPU eliminates costly software floating-point emulation in control loops, motor control algorithms, and sensor fusion calculations. Typical applications include industrial automation controllers, motor drives, and embedded networking equipment, where the combination of 120 MHz processing, FPU math capability, and 1 MB program memory matches demanding control and communication workloads. For design, note that the -CUR suffix denotes Tape and Reel packaging and an industrial temperature grade; Microchip recommends Revision B material for new prototypes and production per the product page notice. Plan the power and clocking scheme for the 120 MHz operating point using the manufacturer datasheet. This page synthesizes distributor pricing, drop-in alternatives within the SAM4E and related SAM4 families, and practical design notes not found in the manufacturer datasheet alone.

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产品（18738)

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ATSAM4CMS8CA-AU - Dual-Core 120MHz MCU 512KB Flash | Microchip

ATSAM4CMS8CA-AUR - Dual-Core 120MHz MCU 512KB Flash | Microchip

ATSAM4CMS8CC-AU - Dual-Core 120MHz Metering MCU | Microchip

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ATSAM4CP16C-AHU-Y - Dual-Core 120MHz MCU 1MB Flash | Microchip

ATSAM4E16CA-AN - 120MHz Cortex-M4, 1MB Flash MCU | Microchip

ATSAM4E16CA-AU - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

ATSAM4E16CA-AUR - 120MHz Cortex-M4 1MB Flash MCU | Microchip

ATSAM4E16CA-CU - 120MHz Cortex-M4 1MB Flash MCU | Microchip

ATSAM4E16CA-CUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip