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ATSAM4S2AA-MU

ATSAM4S2AA-MU - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

The Microchip Technology ATSAM4S2AA-MU is a 32-bit ARM Cortex-M4 flash microcontroller running at 120 MHz, with 128 KB of embedded FLASH and a 48-pin QFN (7x7 mm) package. It belongs to the SAM4S series of high-performance, general-purpose MCUs designed for embedded control applications. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory (FLASH and SRAM), and peripherals such as UARTs, SPI, I2C, ADCs and timers on one die. Within the hierarchy of embedded processors, the SAM4S sits above entry-level Cortex-M0+ parts and offers DSP instructions and a single-cycle multiply-accumulate unit inherited from the Cortex-M4 architecture, making it suitable for digitally intensive control loops and signal processing. Key features include the 120 MHz Cortex-M4 core with hardware floating-point support in the SAM4S family architecture, 128 KB of on-chip FLASH for program storage, pin-to-pin compatibility across the SAM4S, SAM4N, SAM3S, SAM3N and SAM7S series (48-, 64- and 100-pin versions), and an industrial temperature grade option. The MRL-A (Moisture Requirement Level A) green QFN package supports lead-free reflow assembly and RoHS-type green compliance per Microchip's GREEN package designation shown by distributors. Architecturally, the SAM4S family combines the Cortex-M4 core with a multi-layer bus matrix, enabling parallel peripheral access and efficient DMA transfers. The shared peripheral set across memory-density variants means firmware developed for the 128 KB ATSAM4S2A migrates directly to higher-density siblings by relinking, without board changes thanks to pin-to-pin compatibility. Typical applications include industrial control and automation nodes, motor control and power-conversion systems, consumer devices, and embedded IoT gateways where 120 MHz headroom and hardware multiply-accumulate improve control-loop and filtering performance. When designing, budget code size carefully: 128 KB FLASH is adequate for most control and communication stacks but not for graphics-heavy firmware; plan migration headroom using the pin-compatible ATSAM4S4A density variant. This page synthesizes distributor pricing (LCSC, DigiKey, Mouser), same-family drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.

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ATSAM4S2AB-AN

ATSAM4S2AB-AN - ARM Cortex-M4 120MHz MCU 128KB Flash | Microchip

The Microchip Technology ATSAM4S2AB-AN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 128 KB embedded Flash and 64 KB SRAM, housed in a 48-pin LQFP (7x7 mm) package. It belongs to the SAM4S series of high-performance MCUs featuring a DSP instruction set, Thumb-2 instruction support, and a Memory Protection Unit (MPU). A microcontroller (MCU) is a single-chip computer integrating a processor core, memory, and peripherals into one package. Within the semiconductor hierarchy, the ATSAM4S2AB-AN sits in the general-purpose 32-bit MCU class, part of the broader ARM Cortex-M embedded processor family used across industrial, consumer, and IoT systems. Key features include the ARM Cortex-M4 core with hardware DSP instructions for efficient digital signal processing, 128 Kbytes of embedded Flash with ECC (Error Correction Code), Security Bit and Lock Bits for code protection, and 64 Kbytes of SRAM. Peripherals cover I2C, SPI, UART/USART, IrDA, SSC, memory card, and USB connectivity, plus brown-out detect/reset, DMA, PWM, POR, and a watchdog timer. The device provides 34 general-purpose I/O pins. The Cortex-M4 architecture balances high computational throughput with low interrupt latency, making the SAM4S well suited for motor control and mixed-signal applications that benefit from single-cycle MAC and hardware divide. Flash ECC improves reliability in noisy industrial environments, while the MPU supports functional separation of firmware tasks. A wide operating range supports industrial temperature requirements. Typical applications include industrial automation controllers, USB-connected sensor and data-acquisition nodes, motor control drives, and embedded IoT gateways. The USB peripheral, rich serial interfaces, and DSP capability make it a strong fit for systems that combine communication, control, and signal processing. When designing with this device, verify that 128 KB Flash and 64 KB SRAM match your firmware footprint; if code grows beyond this budget, pin-compatible siblings in the SAM4S family provide memory upgrade paths within the same 48-LQFP footprint. Follow Microchip layout guidance for USB signal routing and decoupling. This page synthesizes verified distributor pricing, drop-in alternatives, design notes, and comparison data not consolidated in the manufacturer datasheet.

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ATSAM4S2AB-ANR

ATSAM4S2AB-ANR - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4S2AB-ANR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 128 KB of embedded Flash memory, 64 KB of SRAM, and a 48-pin LQFP (7x7 mm) surface-mount package in industrial temperature grade. According to the Microchip SAM4S series datasheet, the SAM4S2A builds on the high-performance Cortex-M4 core with Memory Protection Unit (MPU), DSP instructions, and the Thumb-2 instruction set. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, sitting at the heart of the embedded systems hierarchy: MCU -> embedded processor -> system-on-chip -> semiconductor device. The ARM Cortex-M4 is a 32-bit RISC processor core optimized for mixed signal and control applications, and Flash-based MCUs allow in-field firmware updates. Key features of the ATSAM4S2AB-ANR include the 120 MHz Cortex-M4 core with DSP extension for single-cycle MAC operations, 128 Kbytes of embedded Flash with ECC, Security Bit and Lock Bits for code protection, 64 Kbytes of SRAM, and a rich peripheral set typical of the SAM4S family including USART, SPI, TWI, PWM, ADC, and USB device support. The 1.2V/3.3V operating supply configuration supports core/IO power schemes common in industrial designs. Architecturally, the SAM4S series achieves high code density through the Thumb-2 instruction set while the DSP instructions accelerate digital filtering and control-loop math. Flash access acceleration keeps the 120 MHz core fed from zero-wait-state execution for most code. The MPU enables robust task isolation in RTOS-based designs. Typical applications include industrial automation and control nodes, consumer and industrial HMI panels, data loggers, motor control auxiliaries, and embedded connectivity bridges where 32-bit performance and DSP capability at moderate memory density are required. Tape-and-reel packaging (T/R) supports automated pick-and-place production. Design consideration: the SAM4S series is pin-to-pin compatible with the SAM3N, SAM3S, SAM4N, and legacy SAM7S series in corresponding pin counts, so PCB layouts can be reused to scale Flash/RAM density up or down without re-routing. Always verify peripheral availability across family members before reusing firmware. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single citable reference for sourcing and second-sourcing decisions.

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ATSAM4S2AB-MN

ATSAM4S2AB-MN - 120MHz Cortex-M4 MCU 128KB Flash | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S2AB-MN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 128 KB embedded Flash and a 48-pin QFN (7x7 mm) package. It operates from a single 1.62 V to 3.6 V supply and belongs to the SAM4S smart ARM-based MCU family. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory (Flash for code, SRAM for data) and peripherals such as UART, SPI, I2C, timers and ADCs on one die. In the embedded-systems hierarchy, the SAM4S sits above basic 8-bit MCUs and below application processors, targeting real-time control, sensing and connectivity tasks in industrial and consumer designs. Key features of the ATSAM4S2AB-MN include the Cortex-M4 core with DSP instructions and a hardware FPU for efficient signal processing, up to 120 MHz operation, 128 KB of zero-wait-state Flash with dual-bank options, and a rich peripheral set including USB 2.0 Device, high-speed USDHC/SDRAM-capable bus matrix, 12-bit ADC and UART/SPI/TWI serial interfaces. Extended temperature qualification (as indicated by the M temperature grade) and a halogen-free, green QFN package support harsh and space-constrained designs. Architecturally, the device leverages Microchip's multi-layer AHB bus matrix, allowing the CPU, USB DMA and peripheral DMA channels to operate concurrently with minimal arbitration latency. The Flash accelerator reduces effective wait states at high clock rates, while multiple low-power modes down to tens of microamps support battery-operated products. A precise on-chip regulator simplifies power-tree design. Typical applications include industrial control panels, motor-control and power-conversion monitoring, metering, IoT sensor nodes, USB accessories, and consumer appliances - anywhere 32-bit DSP-grade performance is needed in a compact 7x7 mm footprint. When designing with this MCU, budget PCB real estate for a solid 3.3 V rail with local decoupling on every VDD pin, and plan to program via SWD (Serial Wire Debug) or JTAG through the dedicated pins; the extended-temperature variant requires derating review at maximum ambient. This page synthesizes distributor pricing, drop-in alternatives within the SAM4S family, and practical design notes not found on the manufacturer product page. Pricing references LCSC and DigiKey data as of 2026-09-20.

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ATSAM4S2AB-MNR

ATSAM4S2AB-MNR - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

The Microchip Technology ATSAM4S2AB-MNR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 128 KB embedded Flash and a 48-pin QFN (7x7 mm) package. It operates from a single 1.62 V to 3.6 V supply and belongs to the SAM4S smart ARM-based MCU family. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory (Flash for code, SRAM for data) and peripherals such as UART, SPI, I2C, timers and ADCs on one die. In the embedded-systems hierarchy, the SAM4S sits above basic 8-bit MCUs and below application processors, targeting real-time control, sensing and connectivity tasks in industrial and consumer designs. Key features of the ATSAM4S2AB-MNR include the Cortex-M4 core with DSP instructions and a hardware FPU for efficient signal processing, up to 120 MHz operation, 128 KB of zero-wait-state Flash with dual-bank options, and a rich peripheral set including USB 2.0 Device, high-speed USDHC/SDRAM-capable bus matrix, 12-bit ADC and UART/SPI/TWI serial interfaces. Extended temperature qualification (as indicated by the M temperature grade) and a halogen-free, green QFN package support harsh and space-constrained designs. Architecturally, the device leverages Microchip's multi-layer AHB bus matrix, allowing the CPU, USB DMA and peripheral DMA channels to operate concurrently with minimal arbitration latency. The Flash accelerator reduces effective wait states at high clock rates, while multiple low-power modes down to tens of microamps support battery-operated products. A precise on-chip regulator simplifies power-tree design. Typical applications include industrial control panels, motor-control and power-conversion monitoring, metering, IoT sensor nodes, USB accessories, and consumer appliances - anywhere 32-bit DSP-grade performance is needed in a compact 7x7 mm footprint. When designing with this MCU, budget PCB real estate for a solid 3.3 V rail with local decoupling on every VDD pin, and plan to program via SWD (Serial Wire Debug) or JTAG through the dedicated pins; the extended-temperature variant requires derating review at maximum ambient. This page synthesizes distributor pricing, drop-in alternatives within the SAM4S family, and practical design notes not found on the manufacturer product page. Pricing references LCSC and DigiKey data as of 2026-09-20.

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ATSAM4S2BA-AU

ATSAM4S2BA-AU - Cortex-M4 120MHz 128KB MCU | Microchip

The Microchip Technology ATSAM4S2BA-AU is a 32-bit ARM Cortex-M4 microcontroller with a floating point unit, running at up to 120 MHz, integrating 128 KB of single-cycle flash memory and 64 KB of SRAM in a 64-pin LQFP (10x10 mm) surface-mount package. 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. Within the power management IC and embedded-system hierarchy, the ATSAM4S2BA-AU belongs to the SAM4S family of ARM-based flash MCUs, positioned above entry-level Cortex-M0+ devices and below high-integration SAM4E parts, serving general-purpose embedded control and connectivity nodes. Key features include 1.62V to 3.6V single-supply operation, a single-precision hardware FPU and DSP instructions for efficient signal processing, and a low power consumption profile of approximately 180 uA/MHz. On-chip peripherals cover 2x USART, 2x TWI (I2C), SPI, USB 2.0 full-speed device port, SSC for I2S audio, a 12-bit 2 Msps ADC, 12-bit DAC, PWM channels, HSMCI for SD/MMC cards, DMA, RTC, and watchdog timers, providing broad system integration without external components. The Cortex-M4 core executes from flash with 0-wait-state access up to certain speeds via an accelerator (CMCC cache controller), while the flash accelerator sustains near-peak performance at 120 MHz. A multi-layer bus matrix with peripheral DMA channels keeps CPU load low during high-throughput data transfers, and nested vectored interrupt control delivers deterministic real-time response. Typical applications include industrial control nodes, consumer appliances, USB-connected instruments, SD-card data loggers, and audio/accessory devices where the SSC and I2S path plus FPU acceleration fit well. Design consideration: validate VDDCORE/VCORE external regulation and decoupling per the SAM4S datasheet; the LQFP-64 footprint is pin-compatible with SAM4N, SAM3S, SAM3N, and SAM7S 64-pin devices, enabling memory-size scalability. This page synthesizes distributor pricing, pin-compatible upgrade alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S2BA-AUR

ATSAM4S2BA-AUR - Cortex-M4 120MHz 128KB MCU | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S2BA-AUR is a 32-bit ARM Cortex-M4 microcontroller with a floating point unit, running at up to 120 MHz, integrating 128 KB of single-cycle flash memory and 64 KB of SRAM in a 64-pin LQFP (10x10 mm) surface-mount package. 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. Within the power management IC and embedded-system hierarchy, the ATSAM4S2BA-AUR belongs to the SAM4S family of ARM-based flash MCUs, positioned above entry-level Cortex-M0+ devices and below high-integration SAM4E parts, serving general-purpose embedded control and connectivity nodes. Key features include 1.62V to 3.6V single-supply operation, a single-precision hardware FPU and DSP instructions for efficient signal processing, and a low power consumption profile of approximately 180 uA/MHz. On-chip peripherals cover 2x USART, 2x TWI (I2C), SPI, USB 2.0 full-speed device port, SSC for I2S audio, a 12-bit 2 Msps ADC, 12-bit DAC, PWM channels, HSMCI for SD/MMC cards, DMA, RTC, and watchdog timers, providing broad system integration without external components. The Cortex-M4 core executes from flash with 0-wait-state access up to certain speeds via an accelerator (CMCC cache controller), while the flash accelerator sustains near-peak performance at 120 MHz. A multi-layer bus matrix with peripheral DMA channels keeps CPU load low during high-throughput data transfers, and nested vectored interrupt control delivers deterministic real-time response. Typical applications include industrial control nodes, consumer appliances, USB-connected instruments, SD-card data loggers, and audio/accessory devices where the SSC and I2S path plus FPU acceleration fit well. Design consideration: validate VDDCORE/VCORE external regulation and decoupling per the SAM4S datasheet; the LQFP-64 footprint is pin-compatible with SAM4N, SAM3S, SAM3N, and SAM7S 64-pin devices, enabling memory-size scalability. This page synthesizes distributor pricing, pin-compatible upgrade alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S2BA-MU

ATSAM4S2BA-MU - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4S2BA-MU is a 32-bit ARM Cortex-M4 microcontroller running at 120 MHz with 128 KB embedded flash and 64 KB SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed pad. A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, non-volatile program memory, RAM, and a rich set of peripherals on one die. Within the hierarchy of embedded processors, the SAM4S sits between entry-level Cortex-M0+/M3 MCUs and high-performance Cortex-M7 devices, making it a general-purpose workhorse for industrial control and consumer products. Key features include the Cortex-M4 core with DSP instructions and a hardware floating-point unit (FPU) for efficient single-precision math, a maximum operating frequency of 120 MHz, and low-power operation of 180 uA/MHz as cited on the Microchip product page. The supply range of 1.62V to 3.6V supports both 3.3V industrial rails and battery operation. Peripheral set of the SAM4S family typically includes USB 2.0 device, multiple USARTs, SPI, TWI (I2C), an ADC, and a PWM controller. Technically, the SAM4S implements an ARMv7E-M architecture with Harvard bus structure, a multi-layer bus matrix, and flash accelerators that keep the core fed at 120 MHz from zero-wait-state flash bursts. Per the Microchip SAM4S family datasheet (document 60001419B), the series is pin-to-pin compatible with SAM4N, SAM3S, SAM3N, and legacy SAM7S devices in the 64-pin version, enabling easy in-portfolio migration. Typical applications include industrial automation nodes, motor control and PWM-driven power stages, metering systems, USB-attached accessories, and IoT sensor gateways. The 120 MHz core with FPU suits control loops and digital filtering in compact designs. A key design consideration: connect all VDDIO/VDDCORE and GND pins, and decouple each supply pin with 100 nF ceramics close to the exposed pad, which doubles as the thermal and ground anchor. This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S2BA-UUR

ATSAM4S2BA-UUR - 120MHz Cortex-M4 128KB MCU | Microchip

The Microchip Technology ATSAM4S2BA-UUR is a 32-bit ARM Cortex-M4 RISC microcontroller with 120 MHz maximum operating frequency, 128 KB of Flash memory, and 64 KB of SRAM in a 64-pin WLCSP package. It supports 1.2 V and 3.3 V operation and integrates I2C, SPI, UART, USB, PWM, ADC, and DAC peripherals. A microcontroller is a programmable semiconductor that combines a processor core, memory, and embedded peripherals on one integrated circuit. The ARM Cortex-M4 belongs to the microcontroller hierarchy and provides deterministic instruction execution for embedded control systems. Within Microchip's SAM4S family, the ATSAM4S2BA-UUR is positioned as a compact, moderately resourced device for connected industrial, communications, and control applications. The 120 MHz Cortex-M4 core provides substantially greater processing headroom than lower-frequency 8-bit or 16-bit controllers while retaining the simplicity of a single-chip embedded design. Its 128 KB Flash configuration supports embedded firmware, while 64 KB of SRAM accommodates working memory, buffers, stack space, and intermediate processing data. Native QTouch support expands the design options for capacitive buttons, sliders, and wheels. Communication and conversion peripherals reduce the need for external components in connected control equipment. The device includes I2C and SPI interfaces for sensors and memories, UART for serial links, full-speed USB device connectivity, PWM channels for motor or lighting control, and ADC and DAC functions for measurement and analog signal generation. This integration allows a compact system to process local data and communicate with a host, controller, or service equipment. Typical uses include industrial sensor nodes, USB-connected data-acquisition equipment, capacitive touch interfaces, compact motor controllers, and embedded communications modules. The 64-pin WLCSP construction favors space-constrained products, but it demands careful PCB design, fine-pitch assembly capability, and deliberate thermal and power planning. Designers should follow the pin-description table, recommended decoupling configuration, and layout guidance in the manufacturer datasheet. The WLCSP footprint should be reviewed against assembly capability, while USB, analog, and high-speed signal routes require short paths, controlled return-current paths, and appropriate grounding. The MCU should be selected only when its memory and peripheral set match the application without requiring unnecessary firmware complexity. This page consolidates the exact device identity, package, memory, interface, and application information into an engineering-oriented selection reference. It also distinguishes same-package family options by memory capacity, helping designers assess PCB reuse while recognizing that firmware, pin multiplexing, and peripheral-equivalence checks remain essential before replacement.

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ATSAM4S2BB-AN

ATSAM4S2BB-AN - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S2BB-AN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 128 KB of embedded Flash and 64 KB of SRAM, housed in a 64-pin LQFP (10 x 10 mm) industrial-temperature package. It operates from a 1.62 V to 3.6 V single supply and achieves a low-power consumption of 180 uA in backup mode. A microcontroller (MCU) is a single-chip computer integrating a processor core, program memory, data memory, and peripherals such as UART, SPI, I2C, ADC, timers, and USB. Within the power-management hierarchy of embedded systems, an MCU replaces multi-chip processor-plus-peripheral solutions and sits below application processors in complexity. The SAM4S series belongs to Microchip (formerly Atmel) ARM-based flash MCU portfolio, positioned for cost-sensitive industrial and consumer control applications. Key differentiating features include DSP instructions and a Thumb-2 instruction set on the Cortex-M4 core, a Memory Protection Unit (MPU), Flash with ECC, Security Bit and Lock Bits for code protection, and a full-speed USB Device port with embedded transceiver. The Flash accelerator with cache sustains near-zero-wait-state execution at 120 MHz. Technically, the SAM4S2B combines the Cortex-M4 pipeline with a multi-layer bus matrix and peripheral DMA (PDC) channels, allowing USART, SPI and ADC transfers without CPU intervention. Peripherals include up to 2 UARTs/USARTs, SPI, TWI (I2C), 2-channel 12-bit ADC, PWM channels, and a real-time clock with battery backup domain. The series is pin-to-pin compatible with the SAM3N, SAM3S, SAM4N and legacy SAM7S devices in 48-, 64- and 100-pin versions, providing a migration path for Flash-size and feature upgrades without PCB redesign. Typical applications include industrial control and automation nodes, consumer appliances, metering systems, motor control with PWM peripherals, and USB-connected embedded devices. The 180 uA backup-mode consumption suits battery-backed metering, while the DSP instructions accelerate filtering and control-loop algorithms. Design consideration: the 1.62 V to 3.6 V supply requires a stable 3.3 V rail with proper VDDCORE/VDDOUT decoupling per the regulator architecture; use the ERASE pin carefully to avoid accidental Flash bulk erase during production. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S2BB-ANR

ATSAM4S2BB-ANR - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4S2BB-ANR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 128 KB of embedded Flash and 64 KB of SRAM, housed in a 64-pin LQFP (10 x 10 mm) industrial-temperature package. It operates from a 1.62 V to 3.6 V single supply and achieves a low-power consumption of 180 uA in backup mode. A microcontroller (MCU) is a single-chip computer integrating a processor core, program memory, data memory, and peripherals such as UART, SPI, I2C, ADC, timers, and USB. Within the power-management hierarchy of embedded systems, an MCU replaces multi-chip processor-plus-peripheral solutions and sits below application processors in complexity. The SAM4S series belongs to Microchip (formerly Atmel) ARM-based flash MCU portfolio, positioned for cost-sensitive industrial and consumer control applications. Key differentiating features include DSP instructions and a Thumb-2 instruction set on the Cortex-M4 core, a Memory Protection Unit (MPU), Flash with ECC, Security Bit and Lock Bits for code protection, and a full-speed USB Device port with embedded transceiver. The Flash accelerator with cache sustains near-zero-wait-state execution at 120 MHz. Technically, the SAM4S2B combines the Cortex-M4 pipeline with a multi-layer bus matrix and peripheral DMA (PDC) channels, allowing USART, SPI and ADC transfers without CPU intervention. Peripherals include up to 2 UARTs/USARTs, SPI, TWI (I2C), 2-channel 12-bit ADC, PWM channels, and a real-time clock with battery backup domain. The series is pin-to-pin compatible with the SAM3N, SAM3S, SAM4N and legacy SAM7S devices in 48-, 64- and 100-pin versions, providing a migration path for Flash-size and feature upgrades without PCB redesign. Typical applications include industrial control and automation nodes, consumer appliances, metering systems, motor control with PWM peripherals, and USB-connected embedded devices. The 180 uA backup-mode consumption suits battery-backed metering, while the DSP instructions accelerate filtering and control-loop algorithms. Design consideration: the 1.62 V to 3.6 V supply requires a stable 3.3 V rail with proper VDDCORE/VDDOUT decoupling per the regulator architecture; use the ERASE pin carefully to avoid accidental Flash bulk erase during production. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S2BB-MN

ATSAM4S2BB-MN - 120MHz Cortex-M4 128KB Flash MCU | Microchip

The Microchip Technology ATSAM4S2BB-MN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, integrating 128 KB of ECC-protected embedded Flash and 64 KB of SRAM in a 64-pin QFN (9x9 mm) package with exposed pad, supplied over a 1.62V to 3.6V range. A microcontroller (MCU) is a compact integrated circuit that governs specific operations in embedded systems, combining a processor core, memory, and programmable peripherals on one die. The ARM Cortex-M4 is a 32-bit RISC core with a hardware FPU and DSP instructions; the SAM4S series belongs to Microchip's SAM4 family of low-power, high-performance ARM flash MCUs, sitting above the Cortex-M0+ SAM D/L series and beside the SAM4E/Ethernet-equipped parts. Key features include a 120 MHz maximum core clock, 128 KB Flash with ECC, security bit and lock bits, 180 uA low-power mode consumption, an MPU (Memory Protection Unit), and a rich peripheral set spanning multiple UARTs, SPI, I2C/TWI, USB, and a 12-bit ADC. Flash ECC corrects single-bit errors, improving data integrity in industrial and medical equipment. Architecturally, the Cortex-M4 pipeline delivers approximately 1.25 DMIPS/MHz-class performance with Thumb-2 code density, and an internal voltage regulator generates the stable core supply from the 1.62V-3.6V external rail. The device is pin-to-pin compatible with SAM3S, SAM4N, and SAM7S legacy MCUs in the 64-pin version, enabling migration without PCB rework. Typical applications include industrial control systems, medical diagnostics, consumer electronics, and IoT endpoints requiring real-time DSP processing, USB connectivity, and battery efficiency. Design consideration: decouple all power pins with 100 nF capacitors placed close to the die and solder the exposed pad to the PCB thermal pad for heat dissipation. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet. Pricing data reflects distributor listings as of 2026-09-20.

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ATSAM4S2BB-MNR

ATSAM4S2BB-MNR - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4S2BB-MNR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 128KB of embedded Flash and 64KB of SRAM, housed in a 64-pin VQFN (9x9 mm) package with exposed pad. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, serving as the computational heart of embedded systems. Within the power-management hierarchy of an embedded design, the SAM4S family occupies the mid-to-high performance tier of Microchip's ARM-based MCU portfolio, sitting above the SAM3N/SAM3S Cortex-M3 series and offering DSP instructions and a Memory Protection Unit (MPU) inherited from the Cortex-M4 core. Key features include the Thumb-2 instruction set with hardware DSP instructions for efficient signal processing, ECC-protected Flash with Security Bit and Lock Bits for code integrity, and a low-power profile of approximately 180 uA in typical low-power operation with a 1.62V to 3.6V supply range. The -MNR ordering code denotes the industrial/extended-temperature, green (halogen-free) QFN package in Tape & Reel packaging. Architecturally, the Cortex-M4 core at 120 MHz delivers 1.25 DMIPS/MHz-class performance, and the device integrates a rich peripheral set typical of the SAM4S family, including USB, USART, SPI, TWI, ADC, and PWM channels, enabling single-chip designs for control and connectivity tasks. Typical applications include industrial control and automation nodes, consumer appliances, motor control systems, and general-purpose embedded products that require 32-bit performance with deterministic real-time behavior. When designing with this device, budget the 1.62V to 3.6V supply rail carefully and follow the reference manual for Flash ECC and security-bit configuration, since these options affect field reliability and firmware update strategy. This page synthesizes distributor availability, pin-compatible SAM4S/SAM3S drop-in alternatives, and practical design notes not found on the manufacturer product page.

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ATSAM4S2BB-UUR

ATSAM4S2BB-UUR - 120MHz Cortex-M4 MCU, 128KB Flash, 64-WLCSP | Microchip

The Microchip Technology ATSAM4S2BB-UUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 128 KB of embedded Flash and 64 KB of SRAM, housed in a 64-ball WLCSP (UFBGA) package measuring just 3.32 x 3.32 mm. A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, memory, and peripherals on one die, forming the lowest layer of the embedded systems hierarchy (MCU -> embedded processor -> semiconductor). The SAM4S family is Microchip's (formerly Atmel) mid-range ARM-based flash MCU line, positioned for cost-sensitive applications that still need 32-bit performance and DSP capability. Key features of the ATSAM4S2BB include the Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), embedded Flash with ECC and Security Bit plus Lock Bits, and a supply range of 1.62 V to 3.6 V. Power consumption is approximately 180 uA/MHz class, supporting battery-operated designs. Technically, the Cortex-M4 pipeline combined with hardware DSP instructions enables efficient fixed-point signal processing (filters, FFTs) without a separate DSP. The ECC-protected Flash improves reliability in industrial environments, and lock bits support IP protection. Typical applications include wearable and portable devices (the 3.32 x 3.32 mm WLCSP is ideal for ultra-compact PCBs), industrial sensors and control nodes, and IoT edge devices. Design consideration: WLCSP ball-grid packages require controlled-impedance PCB layout with via-in-pad or escape routing, so verify your fab supports 0.4 mm-pitch-class micro-BGA assembly before committing to the footprint. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S2CA-AU

ATSAM4S2CA-AU - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4S2CA-AU is a 32-bit ARM Cortex-M4 flash microcontroller operating at up to 120 MHz, with 128 KB (128K x 8) of Flash program memory and 64 KB of SRAM, housed in a 100-pin LQFP (14 x 14 mm) surface-mount package. A microcontroller (MCU) integrates a processor core, memory, and peripherals onto a single chip, forming the heart of an embedded system. Within the power management hierarchy of embedded design, MCUs such as the SAM4S sit above discrete logic and below application processors, offering real-time deterministic control. The SAM4S series belongs to Microchip's (formerly Atmel) SMART ARM-based MCU portfolio, positioned for industrial and consumer embedded applications. Key features include the ARM Cortex-M4 RISC core with DSP extension instructions and hardware FPA, full-speed USB Device port, EBI/EMI external bus interface, and connectivity peripherals spanning I2C, SPI, UART/USART, IrDA, SSC, and memory-card interfaces. On-chip peripherals include DMA, PWM, brown-out detect/reset, power-on reset, and a watchdog timer, with 79 general-purpose I/O pins. The Cortex-M4 architecture at 120 MHz delivers approximately 1.25 DMIPS/MHz core performance, enabling single-cycle MAC and saturating arithmetic for digital filtering and control loops. According to the Microchip SAM4S family datasheet, the series offers pin-to-pin compatibility with SAM4N, SAM3S, SAM3N, and SAM7S devices, facilitating migration across memory densities. Typical applications include industrial control and factory automation, consumer appliances, USB-connected devices, and motor control systems where DSP capability and rich connectivity are required. Design consideration: ensure the 1.62V-3.6V supply rail is well decoupled, and confirm that 128 KB Flash / 64 KB SRAM capacity covers firmware growth before finalizing the footprint; pin-compatible higher-density SAM4S parts allow later upgrades. This page synthesizes distributor pricing, drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S2CA-CFU

ATSAM4S2CA-CFU - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

The Microchip Technology ATSAM4S2CA-CFU is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 128 KB of embedded Flash and 64 KB of SRAM, housed in a 100-ball VFBGA (7x7 mm) package for compact surface-mount designs. A microcontroller unit (MCU) integrates a processor core, memory, and peripherals on a single chip, forming the compute layer of embedded systems. Within the hierarchy, the SAM4S sits in the 32-bit ARM-based MCU family, above 8-bit MCUs like the PIC16 series and below high-end application processors. The ARM Cortex-M4 core adds a hardware FPU, DSP instructions, and the Thumb-2 instruction set, while the integrated Memory Protection Unit (MPU) supports robust, fault-isolated firmware architectures. Key features of the ATSAM4S2CA-CFU include the 120 MHz Cortex-M4 with DSP extensions for real-time signal processing, 128 KB Flash with ECC (error-correcting code), Security Bit and Lock Bits for code protection, and industrial temperature operation (-40C to +85C), matching the GREEN IND TEMP MRL A classification listed by Mouser. Architecturally, the device combines the Cortex-M4 pipeline with a multi-layer bus matrix, enabling parallel access to Flash, SRAM, and peripherals. Flash ECC improves reliability in safety-conscious and high-vibration environments. The 100-ball VFBGA footprint with a 0.8 mm ball pitch saves board area versus 100-pin LQFP equivalents, at the cost of more demanding PCB assembly (BGA reflow and X-ray inspection). Typical applications include industrial control and automation nodes, consumer and portable devices, motor control and power conversion, and IoT gateways where DSP instruction throughput accelerates filtering and FFT workloads. Design consideration: BGA packages require careful PCB fanout, controlled soldering profiles, and cannot be hand-reworked easily; confirm your assembly capability before committing to the -CFU VFBGA variant over the pin-compatible LQFP (-AU) versions. This page synthesizes distributor pricing from Mouser, DigiKey, LCSC and Heisener, drop-in migration options within the Microchip SAM portfolio, and practical design notes not found in the manufacturer datasheet. Pricing references are as of 2026-09-20.

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ATSAM4S2CA-CU

ATSAM4S2CA-CU - 120MHz Cortex-M4 MCU | Microchip Technology

The Microchip Technology ATSAM4S2CA-CU is a 32-bit ARM Cortex-M4 microcontroller operating at up to 120 MHz, with 128 KB of flash memory and 64 KB of SRAM, housed in a 100-TFBGA package measuring 9 mm by 9 mm. It supports a 1.62 V to 3.6 V supply range and is identified by the verified distributor data as a green, industrial-temperature part supplied in tray packaging. A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, volatile data memory, and peripherals into one device. The ATSAM4S2C belongs to the SAM4S family, which is part of the broader ARM Cortex-M4 embedded-processing hierarchy. Its 32-bit architecture and operating frequency provide a practical balance of computation, memory, and power management for compact control systems that require more capability than a basic 8-bit controller. The principal verified specifications include a 120 MHz maximum operating speed, 128 KB of flash, and 64 KB of SRAM. The operating-voltage range is 1.62 V to 3.6 V, while a manufacturer-family listing reports power consumption of 180 µA. These characteristics make the device applicable to embedded control, communications, and data-acquisition products where code storage, working memory, and real-time processing must coexist in a single package. The device uses an ARM Cortex-M4 core rather than a dedicated digital signal processor or application-specific controller. This architecture supports a conventional embedded software model in which firmware, interrupts, peripherals, and external interfaces are coordinated by the microcontroller. Because the verified source excerpt does not enumerate the peripheral set or exact internal block architecture, designers should consult the manufacturer datasheet before allocating a specific peripheral resource. Typical use cases include industrial monitoring equipment, connected sensors, compact communication controllers, and embedded control modules. The 128 KB flash capacity accommodates application firmware and configuration data, while the 64 KB SRAM supports working memory for protocol handling, acquisition logic, and real-time tasks. The 100-TFBGA package also helps minimize board area, although it requires a PCB with appropriate ball geometry, a defined escape-routing strategy, and careful assembly planning. The primary design consideration is package-level implementation. A 100-TFBGA is not a direct substitute for a leaded package, and its ball pitch, pad stack, solder-mask definition, and reflow profile must be designed and validated independently. Power routing, decoupling, ground-plane continuity, and exposed thermal behavior also require attention before the MCU is committed to a production layout. This page consolidates verified distributor specifications, package information, pricing references, same-family replacement analysis, and practical implementation guidance into one engineering-focused resource. It also clearly separates verified facts from parameters that still require confirmation from the manufacturer datasheet, helping teams reduce sourcing and design risk.

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ATSAM4S2CB-AN

ATSAM4S2CB-AN - 120MHz Cortex-M4 MCU 128KB Flash | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S2CB-AN is a 32-bit ARM Cortex-M4 flash microcontroller from the SAM4S family, running at up to 120 MHz with 128 KB of single-voltage flash memory and 64 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) industrial-temperature package. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, sitting within the broader hierarchy of embedded processors: Cortex-M4 core -> ARM RISC MCU -> system-on-chip -> embedded control system. MCUs are the workhorses of industrial control, consumer devices, and IoT nodes, where deterministic real-time behavior and low power matter more than raw throughput. Key features of the ATSAM4S2CB-AN include the Cortex-M4 core with hardware FPU-free DSP instructions (single-cycle MAC, SIMD), a full-speed USB Device port with embedded transceiver, supply operation from 1.62V to 3.6V, and low active power consumption cited by Microchip at approximately 180 uA per MHz. The device operates across the industrial temperature range with gull-wing terminals on a square LFQFP body. Technically, the SAM4S series implements a three-stage Harvard pipeline with an ARMv7E-M architecture, optional cache, and dual-bank flash implementation across the family (up to 2048 KB on larger variants), enabling safe in-application firmware updates. The peripheral set includes USART, SPI, TWI (I2C), PWM channels, a 12-bit ADC, and a hardware AES/GHASH cryptographic engine on select family members, allowing the same board design to scale flash density from 128 KB to 2 MB without PCB changes. Typical applications include industrial automation and motor control nodes, consumer and appliance interfaces, USB-equipped instrumentation and sensor bridges, and low-power embedded systems that need Cortex-M4 DSP performance with a long-lived, pin-compatible upgrade path. When designing with this part, note that at 120 MHz flash wait states are significant, so performance-critical code should be relocated to SRAM or the flash cache enabled; also plan VDDCORE and VDDIO decoupling per the datasheet. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single verified reference point.

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ATSAM4S2CB-ANR

ATSAM4S2CB-ANR - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

The Microchip Technology ATSAM4S2CB-ANR is a 32-bit ARM Cortex-M4 flash microcontroller from the SAM4S family, running at up to 120 MHz with 128 KB of single-voltage flash memory and 64 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) industrial-temperature package. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, sitting within the broader hierarchy of embedded processors: Cortex-M4 core -> ARM RISC MCU -> system-on-chip -> embedded control system. MCUs are the workhorses of industrial control, consumer devices, and IoT nodes, where deterministic real-time behavior and low power matter more than raw throughput. Key features of the ATSAM4S2CB-ANR include the Cortex-M4 core with hardware FPU-free DSP instructions (single-cycle MAC, SIMD), a full-speed USB Device port with embedded transceiver, supply operation from 1.62V to 3.6V, and low active power consumption cited by Microchip at approximately 180 uA per MHz. The device operates across the industrial temperature range with gull-wing terminals on a square LFQFP body. Technically, the SAM4S series implements a three-stage Harvard pipeline with an ARMv7E-M architecture, optional cache, and dual-bank flash implementation across the family (up to 2048 KB on larger variants), enabling safe in-application firmware updates. The peripheral set includes USART, SPI, TWI (I2C), PWM channels, a 12-bit ADC, and a hardware AES/GHASH cryptographic engine on select family members, allowing the same board design to scale flash density from 128 KB to 2 MB without PCB changes. Typical applications include industrial automation and motor control nodes, consumer and appliance interfaces, USB-equipped instrumentation and sensor bridges, and low-power embedded systems that need Cortex-M4 DSP performance with a long-lived, pin-compatible upgrade path. When designing with this part, note that at 120 MHz flash wait states are significant, so performance-critical code should be relocated to SRAM or the flash cache enabled; also plan VDDCORE and VDDIO decoupling per the datasheet. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single verified reference point.

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ATSAM4S2CB-CFN

ATSAM4S2CB-CFN - 120MHz Cortex-M4 128KB MCU | Microchip

The Microchip Technology ATSAM4S2CB-CFN is a 32-bit ARM Cortex-M4 microcontroller operating at up to 120 MHz, with 128 KB of embedded Flash and 64 KB of SRAM, packaged in a 100-ball, 7 x 7 mm VFBGA package. It belongs to the SAM4S series and combines a high-performance RISC core, extensive connectivity, analog interfaces, and system-control peripherals in one compact surface-mount device. The industrial-temperature designation and green package identify its intended use in industrial embedded systems. A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, working memory, and peripherals on one die. The ATSAM4S2CB-CFN sits within the hierarchy of 32-bit microcontroller, RISC embedded processor, and system-on-chip. Its ARM Cortex-M4 core includes a Memory Protection Unit, DSP instructions, and the Thumb-2 instruction set, allowing real-time control applications to combine deterministic control with useful digital signal-processing capability. Key resources include 128 KB of Flash organized as 128K x 8, 64 KB of SRAM, and execution at up to 120 MHz. The SAM4S family also provides USB device connectivity and a broad peripheral set for system control, connectivity, and analog interfacing. Native support for Microchip QTouch capacitive sensing expands the device beyond conventional GPIO control into buttons, sliders, and wheel interfaces. These features make the MCU suitable for compact human-interface and connected-control designs. The ATSAM4S2C family architecture is designed to offer pin-to-pin compatibility with the 48-, 64-, and 100-pin versions of SAM3N and SAM3S, as well as the 64-pin SAM4N and SAM7S families. Compatibility provides a path for board-family standardization, although firmware, electrical limits, peripheral availability, and package construction must still be checked before changing an existing design. The VFBGA package requires careful PCB escape routing and inspection after assembly. Typical applications include industrial data acquisition, capacitive-touch control panels, USB-connected peripherals, environmental monitoring, compact automation controllers, and embedded human-interface systems. At 120 MHz, the Cortex-M4 core provides ample performance for protocol handling, state-machine control, communications, and moderate signal-processing workloads while retaining a simple embedded architecture. Design attention should focus on BGA escape routing, decoupling, exposed-pad or thermal management requirements, and firmware support for the selected USB and touch peripherals. Before schematic release, verify the complete pin assignment, package drawing, operating limits, and peripheral availability in the manufacturer datasheet. The ATSAM4S2CB-CFN is also a natural platform for mixed-signal nodes where local sensing, touch detection, communications, and deterministic control must share one compact processor. This page combines the key device characteristics, practical implementation considerations, package details, and verified drop-in comparison candidates to support faster component selection and board-design review.

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ATSAM4S2CB-CN

ATSAM4S2CB-CN - 120MHz Cortex-M4 MCU 128KB Flash | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S2CB-CN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 128 KB of embedded Flash memory and 64 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package. As a member of the SAM4S family, it integrates a single-core Cortex-M4 processor with hardware floating-point support and a rich peripheral set for embedded control applications. A microcontroller (MCU) is a complete computing system on a single chip, combining a processor core, non-volatile program memory, RAM, and input/output peripherals. Within the embedded systems hierarchy, the SAM4S series sits in the high-performance 32-bit ARM-based MCU class, positioned above 8-bit and entry 32-bit devices and below multi-core application processors. Key features of the ATSAM4S2CB-CN include the 120 MHz Cortex-M4 core with DSP instructions and single-cycle MAC, 128 KB Flash for program storage, 64 KB SRAM for data buffering, and extended industrial temperature operation to 105 degrees C as indicated by the CNR ordering suffix. The device is manufactured in a green, RoHS-aware process and supplied in tape and reel (MRL B) format for automated assembly. The SAM4S architecture provides a multi-layer bus matrix, DMA-capable peripherals, and a flexible clock controller, allowing deterministic real-time behavior in control loops and communication bridges. The Cortex-M4 core enables efficient execution of control algorithms and signal-processing tasks such as filtering and FFTs that would burden smaller cores. Typical applications include industrial automation nodes, motor control and power conversion interfaces, data loggers, IoT sensor gateways, and embedded communication modules where 120 MHz processing headroom and 105 C extended temperature tolerance are required. A key design consideration is BGA package assembly: the 9x9 mm 100-ball TFBGA footprint requires fine-pitch PCB fabrication and reflow inspection capability, so confirm your manufacturing process supports 0.8 mm-class BGA pitches before committing to this package variant. This page synthesizes distributor pricing, drop-in family alternatives, design notes, and application guidance not consolidated in the manufacturer datasheet alone.

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ATSAM4S2CB-CNR

ATSAM4S2CB-CNR - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

The Microchip Technology ATSAM4S2CB-CNR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 128 KB of embedded Flash memory and 64 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package. As a member of the SAM4S family, it integrates a single-core Cortex-M4 processor with hardware floating-point support and a rich peripheral set for embedded control applications. A microcontroller (MCU) is a complete computing system on a single chip, combining a processor core, non-volatile program memory, RAM, and input/output peripherals. Within the embedded systems hierarchy, the SAM4S series sits in the high-performance 32-bit ARM-based MCU class, positioned above 8-bit and entry 32-bit devices and below multi-core application processors. Key features of the ATSAM4S2CB-CNR include the 120 MHz Cortex-M4 core with DSP instructions and single-cycle MAC, 128 KB Flash for program storage, 64 KB SRAM for data buffering, and extended industrial temperature operation to 105 degrees C as indicated by the CNR ordering suffix. The device is manufactured in a green, RoHS-aware process and supplied in tape and reel (MRL B) format for automated assembly. The SAM4S architecture provides a multi-layer bus matrix, DMA-capable peripherals, and a flexible clock controller, allowing deterministic real-time behavior in control loops and communication bridges. The Cortex-M4 core enables efficient execution of control algorithms and signal-processing tasks such as filtering and FFTs that would burden smaller cores. Typical applications include industrial automation nodes, motor control and power conversion interfaces, data loggers, IoT sensor gateways, and embedded communication modules where 120 MHz processing headroom and 105 C extended temperature tolerance are required. A key design consideration is BGA package assembly: the 9x9 mm 100-ball TFBGA footprint requires fine-pitch PCB fabrication and reflow inspection capability, so confirm your manufacturing process supports 0.8 mm-class BGA pitches before committing to this package variant. This page synthesizes distributor pricing, drop-in family alternatives, design notes, and application guidance not consolidated in the manufacturer datasheet alone.

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ATSAM4S4AA-AN

ATSAM4S4AA-AN - 120MHz ARM Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4AA-AN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 256 KB of embedded flash and 64 KB of SRAM, housed in a 48-pin LQFP (AN) surface-mount package. A 32-bit microcontroller unit (MCU) integrates a processor core, program memory, data memory, and peripherals on a single die, sitting at the heart of embedded system hierarchy: Cortex-M4 core -> ARM MCU -> embedded controller -> semiconductor device. The SAM4S family belongs to Atmel/Microchip's ARM-based smart ARM-based (SAM) portfolio, positioned for cost-sensitive, high-performance embedded control where deterministic real-time response and low power consumption are required. Key features include a maximum operating frequency of 120 MHz with single-cycle MAC and hardware floating-point support from the Cortex-M4 core, 256 KB of flash program memory, and 64 KB of SRAM. Supply voltage spans 1.62V to 3.6V, and power consumption of 180 uA (per Microchip product page operating mode) makes it suitable for battery-powered designs. Peripherals include brown-out detect/reset, DMA, power-on reset, PWM, and a watchdog timer. Connectivity is comprehensive: I2C, IrDA, memory card (SD/MMC), SPI, SSC (synchronous serial controller), UART/USART, and USB, enabling designs spanning industrial communications, human-machine interfaces, and peripheral bridging. The Cortex-M4 DSP extensions accelerate control loops and filtering algorithms common in motor control and digital power. Typical applications include industrial automation controllers, consumer appliances, IoT sensor nodes, and motor control systems requiring a 120 MHz core with USB and serial connectivity in a compact 48-pin footprint. Design consideration: the part is listed with part status Obsolete, so new designs should plan migration to active SAM4S variants; the SAM4S series offers pin-to-pin compatibility with SAM4N, SAM3S, SAM3N, and SAM7S devices for in-portfolio migration. This page synthesizes distributor stock data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4AA-AU

ATSAM4S4AA-AU - Cortex-M4 120MHz MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4AA-AU is a 32-bit flash microcontroller based on the ARM Cortex-M4 core, running at up to 120 MHz with 256KB of embedded flash and 64KB of SRAM, housed in a 48-pin LQFP (7x7 mm) package rated for the industrial temperature range. A microcontroller unit (MCU) integrates a processor core, memory, and peripherals on a single chip, sitting at the center of embedded system hierarchies that span from simple 8-bit controllers to application processors. The SAM4S family belongs to Microchip's SMART ARM-based MCU portfolio, positioned for mid-range embedded control, connectivity, and signal-processing tasks where a Cortex-M4 with hardware DSP instructions and a single-cycle MAC accelerates math-intensive firmware. Key features of the ATSAM4S4AA-AU include the 120 MHz Cortex-M4 core with FPU-free DSP extensions, 256KB flash with dual dual-plane architecture supporting concurrent read-write operation, and a supply range of 1.62V to 3.6V. According to Microchip product data, the SAM4S4A achieves low active power consumption of approximately 180 uA/MHz class efficiency with multiple sleep, wait, and backup modes for battery-operated designs. The device architecture pairs the core with a bus matrix, a 12-channel DMA controller, and a rich peripheral set typical of the SAM4S family: UART/USART, SPI, I2C (TWI), I2S, ADC, DAC, PWM channels, and an external bus interface. Pin-to-pin compatibility with SAM4N, SAM3S, SAM3N, and SAM7S devices, documented in the SAM4S family datasheet (60001419B), enables straightforward migration across memory and peripheral density options. Typical applications include industrial control panels, motor control and power monitoring nodes, building automation sensors, consumer appliances, and test equipment front-ends. The 48-pin LQFP footprint with up to 38 GPIO suits compact boards that need USB-class performance without BGA assembly cost. Design considerations: reserve flash headroom of at least 20% for OTA firmware updates, and validate 1.8V versus 3.3V I/O signaling against the 1.62V-3.6V supply window. The AU suffix denotes industrial temperature (typically -40C to +85C) and lead-free, RoHS-compliant green packaging in tray format. This page synthesizes distributor pricing, drop-in alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM4S2AA-MU - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

ATSAM4S2AB-AN - ARM Cortex-M4 120MHz MCU 128KB Flash | Microchip

ATSAM4S2AB-ANR - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

ATSAM4S2AB-MN - 120MHz Cortex-M4 MCU 128KB Flash | Microchip (Tape & Reel)

ATSAM4S2AB-MNR - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

ATSAM4S2BA-AU - Cortex-M4 120MHz 128KB MCU | Microchip

ATSAM4S2BA-AUR - Cortex-M4 120MHz 128KB MCU | Microchip (Tape & Reel)

ATSAM4S2BA-MU - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

ATSAM4S2BA-UUR - 120MHz Cortex-M4 128KB MCU | Microchip

ATSAM4S2BB-AN - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip (Tape & Reel)

ATSAM4S2BB-ANR - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

ATSAM4S2BB-MN - 120MHz Cortex-M4 128KB Flash MCU | Microchip

ATSAM4S2BB-MNR - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

ATSAM4S2BB-UUR - 120MHz Cortex-M4 MCU, 128KB Flash, 64-WLCSP | Microchip

ATSAM4S2CA-AU - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip

ATSAM4S2CA-CFU - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

ATSAM4S2CA-CU - 120MHz Cortex-M4 MCU | Microchip Technology

ATSAM4S2CB-AN - 120MHz Cortex-M4 MCU 128KB Flash | Microchip (Tape & Reel)

ATSAM4S2CB-ANR - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

ATSAM4S2CB-CFN - 120MHz Cortex-M4 128KB MCU | Microchip

ATSAM4S2CB-CN - 120MHz Cortex-M4 MCU 128KB Flash | Microchip (Tape & Reel)

ATSAM4S2CB-CNR - 120MHz Cortex-M4 MCU 128KB Flash | Microchip

ATSAM4S4AA-AN - 120MHz ARM Cortex-M4 MCU 256KB Flash | Microchip

ATSAM4S4AA-AU - Cortex-M4 120MHz MCU 256KB Flash | Microchip