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ATSAM4S4BA-MU

ATSAM4S4BA-MU - 120MHz Cortex-M4 256KB MCU | Microchip

Microchip Technology ATSAM4S4BA-MU is a 32-bit ARM Cortex-M4 SAM4S microcontroller operating up to 120 MHz, with 256 KB of embedded Flash and 64 KB of SRAM in a 64-QFN 9 x 9 mm package. It combines a Memory Protection Unit, DSP instructions, and the Thumb-2 instruction set in an embedded RISC architecture designed for compact control systems. A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, working memory, and peripherals on one package. The ATSAM4S4BA-MU belongs to the SAM4S family, which sits within the hierarchy of embedded microcontroller, RISC processor, and semiconductor product categories. Its integrated Flash retains firmware without a separate memory chip, while its SRAM supports stack operations, data buffers, and real-time application state. The device's 120 MHz Cortex-M4 core provides the primary headline performance figure, while its 256 KB embedded Flash stores firmware and the 64 KB SRAM provides volatile working memory. Its 1.2 V and 3.3 V operating references match the Microchip family documentation, and the 64-QFN package supports compact surface-mount construction. The integrated MPU and DSP instructions are useful for controlled memory access and digital signal-processing tasks. The SAM4S architecture supports both control-oriented and connected embedded designs. According to the family datasheet, the portfolio includes USB device connectivity and broad peripheral integration, while the verified product listing describes the ATSAM4S4BA-MU specifically as a SAM4S Cortex-M4 device. Firmware should remain within the available memory limits and use the documented peripheral and interrupt architecture rather than assuming that all family variants expose identical resources. Typical uses include industrial control modules, connected embedded products, human-interface equipment, and compact USB-enabled controllers. The processor speed and DSP instruction support suit responsive control loops, protocol handling, and digital filtering, while the integrated Flash simplifies firmware deployment. Board-level USB implementations require careful routing and the associated connector, protection, and signal-integrity design. The primary design consideration is package and memory planning. Designers should use the manufacturer's 64-QFN land pattern, expose-pad requirements, and recommended decoupling rather than relying on a generic QFN footprint. Firmware must also be checked against the exact ATSAM4S4BA-MU peripheral configuration, clock setup, memory map, and operating limits in the manufacturer datasheet. This page combines verified distributor specifications, current purchasing information, migration-aware drop-in candidates, comparison parameters, and practical design guidance. It distinguishes confirmed data from fields that require review against the full Microchip datasheet, helping engineers evaluate this MCU without treating same-family naming as proof of automatic software compatibility.

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ATSAM4S4BA-UU

ATSAM4S4BA-UU - 120MHz Cortex-M4 MCU 256KB Flash WLCSP-64 (Tape & Reel)

The Microchip Technology ATSAM4S4BA-UU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz, with 256 Kbytes of embedded Flash (with ECC, Security Bit and Lock Bits) and 64 Kbytes of SRAM, housed in a 64-ball WLCSP (Wafer-Level Chip-Scale Package) supplied on Tape & Reel. A microcontroller (MCU) is a single-chip integrated circuit combining a processor core, memory, and peripherals to form a complete embedded control system. Within the MCU hierarchy, the SAM4S family sits in the general-purpose 32-bit flash MCU class, and belongs to the ARM Cortex-M architecture lineage: Cortex-M4 -> ARMv7E-M -> 32-bit RISC microcontroller -> system-on-chip. Key features include the Cortex-M4 core with hardware DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), dual-bank Flash enabling safe in-application programming, and a supply range of 1.62V to 3.6V (nominal 1.2V/3.3V system operation). The WLCSPGREEN package is RoHS-green, making the device well suited to extreme miniaturization where board area is the dominant constraint. Technically, the ATSAM4S4BA-UU integrates a 12-bit ADC, UART, SPI and TWI serial interfaces typical of the SAM4S family, and benefits from Microchip's peripheral set including DMA channels for low CPU-load data movement. Pin-to-pin compatibility across the SAM4S series (and with SAM4N, SAM3S, SAM3N, SAM7S in 64-pin versions) allows flash-size migration without PCB redesign. Typical applications include compact portable and battery-powered devices, IoT sensor nodes, industrial control modules, and consumer electronics where a small 64-ball wafer-level footprint at up to 120 MHz is required. A key design consideration: the WLCSP package exposes balls on a ~0.4-0.5 mm pitch; rework requires experienced assembly and the PCB must follow Microchip's ball-mapping layout guidelines. Confirm exact ball pitch and outline in the manufacturer datasheet before layout. This page synthesizes verified distributor data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4BA-UUR

ATSAM4S4BA-UUR - 120MHz Cortex-M4 MCU 256KB Flash WLCSP-64

The Microchip Technology ATSAM4S4BA-UUR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz, with 256 Kbytes of embedded Flash (with ECC, Security Bit and Lock Bits) and 64 Kbytes of SRAM, housed in a 64-ball WLCSP (Wafer-Level Chip-Scale Package) supplied on Tape & Reel. A microcontroller (MCU) is a single-chip integrated circuit combining a processor core, memory, and peripherals to form a complete embedded control system. Within the MCU hierarchy, the SAM4S family sits in the general-purpose 32-bit flash MCU class, and belongs to the ARM Cortex-M architecture lineage: Cortex-M4 -> ARMv7E-M -> 32-bit RISC microcontroller -> system-on-chip. Key features include the Cortex-M4 core with hardware DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), dual-bank Flash enabling safe in-application programming, and a supply range of 1.62V to 3.6V (nominal 1.2V/3.3V system operation). The WLCSPGREEN package is RoHS-green, making the device well suited to extreme miniaturization where board area is the dominant constraint. Technically, the ATSAM4S4BA-UUR integrates a 12-bit ADC, UART, SPI and TWI serial interfaces typical of the SAM4S family, and benefits from Microchip's peripheral set including DMA channels for low CPU-load data movement. Pin-to-pin compatibility across the SAM4S series (and with SAM4N, SAM3S, SAM3N, SAM7S in 64-pin versions) allows flash-size migration without PCB redesign. Typical applications include compact portable and battery-powered devices, IoT sensor nodes, industrial control modules, and consumer electronics where a small 64-ball wafer-level footprint at up to 120 MHz is required. A key design consideration: the WLCSP package exposes balls on a ~0.4-0.5 mm pitch; rework requires experienced assembly and the PCB must follow Microchip's ball-mapping layout guidelines. Confirm exact ball pitch and outline in the manufacturer datasheet before layout. This page synthesizes verified distributor data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4BB-AN

ATSAM4S4BB-AN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S4BB-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 64-pin LQFP (10 x 10 mm) surface-mount package. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and a rich set of peripherals onto one die. Within the semiconductor hierarchy, the ATSAM4S4BB-AN belongs to the ARM Cortex-M4 32-bit MCU class, the broader SAM4S Flash MCU family from Microchip (formerly Atmel), and the general category of embedded processors used in industrial and consumer electronic systems. Key features include the Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), dual-bank Flash with ECC, Security Bit and Lock Bits for code protection, and a wide 1.62 V to 3.6 V single-supply operating range. The DSP extension set accelerates filter and control math, while the MPU supports functional-safety and RTOS memory partitioning. Architecturally, the device uses an ARMv7E-M Harvard pipeline with a dedicated AHB bus matrix, allowing parallel flash-execution and peripheral DMA traffic. Power consumption is optimized for the SAM4S family, supporting low-power sleep, wait, and backup modes suitable for battery-operated nodes. Typical applications include industrial control and factory automation, motor control and power conversion, building automation and IoT sensor nodes, and consumer appliances requiring deterministic 32-bit control with DSP capability. A key design consideration: the ANR suffix denotes Tape-and-Reel packaging and industrial temperature operation; the SAM4S series is pin-to-pin compatible with SAM4N, SAM3S, SAM3N and SAM7S devices in the 64-pin version, which simplifies in-family migration but does not extend to other vendors' MCUs. This page synthesizes distributor pricing, drop-in SAM4S family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4BB-ANR

ATSAM4S4BB-ANR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4BB-ANR 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 64-pin LQFP (10 x 10 mm) surface-mount package. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and a rich set of peripherals onto one die. Within the semiconductor hierarchy, the ATSAM4S4BB-ANR belongs to the ARM Cortex-M4 32-bit MCU class, the broader SAM4S Flash MCU family from Microchip (formerly Atmel), and the general category of embedded processors used in industrial and consumer electronic systems. Key features include the Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), dual-bank Flash with ECC, Security Bit and Lock Bits for code protection, and a wide 1.62 V to 3.6 V single-supply operating range. The DSP extension set accelerates filter and control math, while the MPU supports functional-safety and RTOS memory partitioning. Architecturally, the device uses an ARMv7E-M Harvard pipeline with a dedicated AHB bus matrix, allowing parallel flash-execution and peripheral DMA traffic. Power consumption is optimized for the SAM4S family, supporting low-power sleep, wait, and backup modes suitable for battery-operated nodes. Typical applications include industrial control and factory automation, motor control and power conversion, building automation and IoT sensor nodes, and consumer appliances requiring deterministic 32-bit control with DSP capability. A key design consideration: the ANR suffix denotes Tape-and-Reel packaging and industrial temperature operation; the SAM4S series is pin-to-pin compatible with SAM4N, SAM3S, SAM3N and SAM7S devices in the 64-pin version, which simplifies in-family migration but does not extend to other vendors' MCUs. This page synthesizes distributor pricing, drop-in SAM4S family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4BB-MN

ATSAM4S4BB-MN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4BB-MN 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 64-pin VQFN (9x9 mm) package with exposed pad. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals such as ADCs, timers, and communication interfaces on one die. Within the embedded systems hierarchy, the SAM4S family belongs to the 32-bit ARM Cortex-M class of MCUs, positioned above 8-bit PIC devices and below application processors, and is used wherever deterministic real-time control and moderate DSP capability are required. Key differentiating features include the Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU) for robust software partitioning, dual-bank Flash enabling safe in-application programming and firmware updates, ECC (error-correcting code) on Flash, plus Security Bit and Lock Bits for IP protection. The wide 1.62 V to 3.6 V supply range simplifies battery and industrial power design. Architecturally, the SAM4S4B builds on the high-performance Cortex-M4 pipeline, which pairs the 32-bit core with single-cycle MAC and SIMD DSP instructions, accelerating filtering and control-loop mathematics beyond what a Cortex-M3 delivers. According to the Microchip SAM4S family datasheet (document 60001419B), the series also offers pin-to-pin compatibility with SAM4N, SAM3S, SAM3N and SAM7S devices, enabling easy migration within the portfolio and across the XAIPART catalog. Typical applications include industrial control and automation nodes, consumer and medical devices, and embedded systems requiring USB connectivity and 12-bit ADC plus 12-bit DAC conversion. The 64-QFN footprint suits compact, thermally demanding PCB layouts. When designing with this part, budget the Flash across the dual banks to allow background firmware updates without external memory, and use the MPU to isolate safety-critical tasks. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4BB-MNR

ATSAM4S4BB-MNR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4BB-MNR is a 32-bit ARM Cortex-M4 flash microcontroller operating at up to 120 MHz, with 256 KB of embedded Flash and 64 KB of SRAM, housed in a 64-pin QFN (9x9 mm) surface-mount package. A microcontroller (MCU) is a single-chip embedded processor that integrates a CPU core, program memory, data memory, and peripherals on one die, forming the lowest tier of the embedded-computing hierarchy (MCU -> embedded processor -> system-on-chip). The SAM4S family is part of Microchip's ARM-based SAM portfolio, positioned for general-purpose mid-range embedded control applications. Key features of the ATSAM4S4B include the ARM Cortex-M4 core with Memory Protection Unit (MPU), DSP instructions, and the Thumb-2 instruction set; 256 Kbytes of embedded Flash with ECC, Security Bit and Lock Bits; 64 Kbytes of SRAM; and dual-bank Flash enabling safe in-application firmware updates. Supply voltage spans 1.62V to 3.6V, supporting both coin-cell and USB-powered designs. Architecturally, the Cortex-M4 pipeline with DSP extensions accelerates filter and control-loop math, while the dual-bank Flash plus ECC improves field-update robustness and data integrity in noise-prone industrial environments. According to the Microchip SAM4S family datasheet (document 60001419B), the SAM4S series offers pin-to-pin compatibility with SAM4N, SAM3S, SAM3N and SAM7S devices, simplifying migration within the portfolio. Typical applications include industrial control and automation nodes, consumer and portable devices, and USB-connected sensor bridges where the full-speed USB Device port and 120 MHz compute headroom reduce bill-of-material complexity. Design consideration: keep VDDIN within the 1.62V to 3.6V range and decouple VDDCORE/VDDOUT per the SAM4S datasheet power-tree; the 9x9 mm QFN requires an exposed-pad ground connection for thermal and signal-integrity performance. This page synthesizes distributor pricing, family drop-in alternatives, and practical design guidance not consolidated on the manufacturer datasheet alone.

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ATSAM4S4CA-AN

ATSAM4S4CA-AN - 120MHz Cortex-M4 MCU | Microchip

The Microchip Technology ATSAM4S4CA-AN is a 32-bit Arm Cortex-M4 microcontroller operating at 120 MHz, with 256 KB of Flash program memory, 64 KB of SRAM, and a 100-pin LQFP package. It combines a high-performance 32-bit processor with extensive embedded peripherals, including a 16-channel 12-bit ADC and dual 12-bit DACs, making it suitable for industrial control, data acquisition, communications, and embedded automation systems. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals into one compact device. The ATSAM4S4CA-AN belongs to the SAM4S family of 32-bit embedded processors and sits within the hierarchy of Arm Cortex-M4 microcontrollers, embedded controllers, and integrated circuits. It allows firmware, communications protocols, analog measurement, and control functions to be implemented on a single device rather than across several discrete components. The 120 MHz Cortex-M4 core provides processing performance for interrupt-driven control, protocol handling, and real-time data processing. Its 256 KB Flash memory supports application firmware and boot code, while 64 KB of SRAM provides working memory for stack operations, buffers, and control algorithms. The integrated 12-bit ADC supports up to 16 input channels, and the dual 12-bit DAC provides two independent digital-to-analog output paths. These resources reduce external component count in compact embedded systems. The ATSAM4S4CA-AN is identified in the 100-LQFP industrial package, with surface-mount gull-wing leads for automated assembly and inspection. Its industrial temperature-grade marking supports use in factory equipment, environmental controllers, industrial communications equipment, and embedded measurement systems. Boundary, power, and exposed-pad requirements should be followed from the manufacturer datasheet and pin-description table when laying out the PCB. Typical applications include PLC and automation controllers, sensor-acquisition nodes, industrial data loggers, motor and process-control equipment, communications gateways, and embedded instrumentation. The combination of 120 MHz processing, 12-bit analog conversion, dual DAC outputs, and 64 KB SRAM allows these systems to consolidate measurement and control functions while preserving deterministic embedded behavior. When designing around this device, begin with the manufacturer pin-description and electrical-characteristics tables, especially for power sequencing, analog-reference requirements, and peripheral pin multiplexing. Place decoupling capacitors close to the supply pins, route sensitive analog inputs away from switching nodes, and validate the clock, reset, and programming interfaces on the first prototype. The 100-LQFP footprint also requires deliberate fanout for the fine-pitch leads and thermal-aware copper distribution. This product analysis combines processor, memory, analog-peripheral, package, sourcing, and engineering-selection information in a format that supports direct PCB planning, firmware architecture decisions, and drop-in replacement evaluation.

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ATSAM4S4CA-AU

ATSAM4S4CA-AU - 120MHz Cortex-M4 256KB Flash MCU | Microchip

The Microchip Technology ATSAM4S4CA-AU 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 100-pin LQFP (14 x 14 mm) surface-mount package. A microcontroller (MCU) integrates a processor core, memory, and peripherals on a single die, forming the lowest level of the embedded computing hierarchy: semiconductor -> integrated circuit -> embedded processor -> microcontroller. The SAM4S family belongs to Microchip's ARM-based SAM portfolio, which targets general-purpose embedded control where a balance of performance, integration, and power efficiency is required. Key features include the Cortex-M4 core with hardware floating-point unit, operating from a 1.62 V to 3.6 V single supply, and power consumption of approximately 180 uA/MHz per the Microchip ATSAM4S4C product page. The 256 KB Flash supports in-application programming, and the 64 KB SRAM provides headroom for real-time control loops, communication buffers, and small RTOS kernels. Architecturally, the device combines the Cortex-M4 pipeline with a multi-layer bus matrix, DMA channels, and a rich peripheral set typical of the SAM4S family, including USART, SPI, TWI (I2C), and PWM resources. Flash accelerator logic keeps the core fed at the full 120 MHz clock rate, minimizing wait-state penalties in deterministic control applications. Typical applications include industrial control and automation nodes, consumer appliance interfaces, embedded networking and gateways, test and measurement instruments, and portable battery-powered devices where the 180 uA/MHz consumption extends battery life. When designing with this device, plan power budgeting around the 1.62 V to 3.6 V supply window and use appropriate decoupling on the VDDIO and VDDCORE domains; also verify that the industrial temperature grade (typically -40C to +85C) matches your end environment. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes beyond the raw datasheet, giving engineers a single citable source for the ATSAM4S4CA-AU.

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ATSAM4S4CA-CFU

ATSAM4S4CA-CFU - 120MHz Cortex-M4 MCU, 256KB Flash | Microchip

The Microchip Technology ATSAM4S4CA-CFU is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S series running at 120 MHz with 256KB of on-chip flash memory, housed in a 100-ball VFBGA (7x7 mm) package for industrial temperature ranges. An ARM Cortex-M4 MCU is a 32-bit reduced-instruction-set (RISC) processor core that integrates a CPU, memory, and peripherals on a single chip, serving as the central controller in embedded systems. Within the product hierarchy, the SAM4S sits between entry-level Cortex-M0+ devices and high-performance Cortex-M7 MCUs, and the ATSAM4S4CA-CFU occupies the mid-memory-density tier of the SAM4S family, complemented by larger siblings in the power-management and embedded-control landscape. Key features include a 120 MHz Cortex-M4 core with single-cycle MAC and hardware FPU support in the family, 256KB flash with page-erase programming, and pin-to-pin compatibility across the SAM4S, SAM4N, SAM3S, SAM3N and SAM7S portfolios, which simplifies migration and footprint reuse. The 100-VFBGA (7x7 mm) ball-grid-array keeps board area minimal for space-constrained industrial designs. From a technical perspective, the SAM4S series combines scalable performance with memory density and power efficiency. The Cortex-M4 core delivers deterministic real-time response with nested vectored interrupts, and the memory bus architecture sustains full-speed flash execution at 120 MHz with flash accelerator techniques typical of the Atmel/Microchip SMART family. Typical applications include industrial automation controllers, sensor hubs and data loggers, embedded networking nodes, and consumer portable devices where a compact 100-ball BGA and 256KB flash provide the right balance of cost and capability. Design consideration: 100-VFBGA packages require microvia or HDI PCB technology; verify your fab capability for 0.8 mm or finer ball pitch before layout, and plan power decoupling on every supply ball pair. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, making it a one-stop reference for the ATSAM4S4CA-CFU.

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ATSAM4S4CA-CU

ATSAM4S4CA-CU - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4CA-CU is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with single-cycle access to 256 KB of Flash memory, 64 KB of SRAM, and a 100-ball TFBGA package (9x9 mm) specified for the industrial temperature range (-40C to +85C). A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip, forming the lowest tier of the embedded processing hierarchy (MCU -> embedded processor -> system-on-chip). The SAM4S family sits within the Microchip (formerly Atmel) SMART ARM-based MCU portfolio and belongs to the broader class of 32-bit RISC flash microcontrollers used in embedded control systems. The ATSAM4S4CA-CU is one of the smaller Flash/RAM members of the family, positioned for cost-sensitive industrial designs that still need the full SAM4S peripheral set. Key differentiating features include the Cortex-M4 core with DSP instructions and a single-precision hardware FPU for math-intensive control loops, a full-speed USB Device port with embedded transceiver, an external bus interface supporting SRAM, PSRAM, NOR Flash, NAND Flash, and LCD modules, and native support for Microchip QTouch capacitive touch technology for buttons, sliders, and wheels. The SAM4S peripheral set also includes multiple USART/SPI/TWI (I2C) interfaces, PWM timers, a 12-bit ADC, and a parallel capture mode for data acquisition. The SAM4S architecture implements up to 2048 KB of Flash with optional dual-bank implementation across the family, up to 160 KB of SRAM on larger variants, and Microchip-documented pin-to-pin compatibility with SAM7S, SAM3N, SAM4N and SAM3S devices. The 120 MHz core with FPU achieves roughly 1.25 DMIPS/MHz class performance for deterministic real-time control, and the on-chip cache above 128 KB Flash variants accelerates execution from Flash. Typical applications include industrial automation controllers, consumer and industrial touch interfaces, motor control, USB-connected instruments, and embedded systems requiring external memory or LCD expansion via the EBI. The 100-ball TFBGA keeps the board footprint small while exposing the full EBI and peripheral count of the device. Design consideration: the ATSAM4S4CA-CU is supplied in tray packaging for industrial-grade operation, and the TFBGA ball footprint requires careful PCB land-pattern design and X-ray-capable inspection. Designers migrating from SAM7S, SAM3N, SAM3S, or SAM4N devices benefit from documented pin-to-pin compatibility within the Microchip portfolio. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with all pricing referenced as of 2026-10-07.

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ATSAM4S4CB-AN

ATSAM4S4CB-AN - 120MHz Cortex-M4, 256KB Flash MCU | Microchip

The Microchip Technology ATSAM4S4CB-AN is a 32-bit ARM Cortex-M4 microcontroller running at 120 MHz with 256 KB flash and 64 KB SRAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package with industrial temperature rating from -40C to +105C. A microcontroller (MCU) 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 -> system-on-chip -> computing system. The SAM4S family is Microchip (formerly Atmel) ARM Cortex-M4-based flash MCU line, positioned for cost-sensitive designs that still need DSP-class math capability from the core's single-cycle MAC and hardware FPU-free thumb-2 instruction set. Key features include the 120 MHz maximum clock frequency, 256 KB (256K x 8) of on-chip flash program memory, 64 kB of data SRAM, 79 general-purpose I/O lines, and a 12-bit ADC. The wide 1.2V/3.3V operating supply support and LQFP GREEN, MRL B packaging simplify both design and assembly. Technically, the SAM4S implements an ARM Cortex-M4 RISC core with a 3-stage pipeline and Harvard architecture, plus a multi-layer bus matrix that lets flash execution and peripheral DMA operate concurrently. The 12-bit ADC, multiple USART/SPI/TWI serial channels, PWM timers, and USB device connectivity cover most industrial interface needs without external components. Typical applications include industrial automation and factory control nodes, consumer appliance controllers, and measurement or data-logging instruments where 256 KB flash and 79 I/O lines give adequate headroom for RTOS-based firmware. Design consideration: supply the core from the integrated regulator (1.2V) and I/O from 3.3V, and decouple both rails close to the package to guarantee 120 MHz operation across the full industrial temperature range. This page synthesizes distributor pricing, drop-in alternatives, pinout resources, and practical design notes not found in the manufacturer datasheet. Pricing is as of 2026-09-20.

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ATSAM4S4CB-ANR

ATSAM4S4CB-ANR - 120MHz Cortex-M4, 256KB Flash MCU | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S4CB-ANR is a 32-bit ARM Cortex-M4 microcontroller running at 120 MHz with 256 KB flash and 64 KB SRAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package with industrial temperature rating from -40C to +105C. A microcontroller (MCU) 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 -> system-on-chip -> computing system. The SAM4S family is Microchip (formerly Atmel) ARM Cortex-M4-based flash MCU line, positioned for cost-sensitive designs that still need DSP-class math capability from the core's single-cycle MAC and hardware FPU-free thumb-2 instruction set. Key features include the 120 MHz maximum clock frequency, 256 KB (256K x 8) of on-chip flash program memory, 64 kB of data SRAM, 79 general-purpose I/O lines, and a 12-bit ADC. The wide 1.2V/3.3V operating supply support and LQFP GREEN, MRL B packaging simplify both design and assembly. Technically, the SAM4S implements an ARM Cortex-M4 RISC core with a 3-stage pipeline and Harvard architecture, plus a multi-layer bus matrix that lets flash execution and peripheral DMA operate concurrently. The 12-bit ADC, multiple USART/SPI/TWI serial channels, PWM timers, and USB device connectivity cover most industrial interface needs without external components. Typical applications include industrial automation and factory control nodes, consumer appliance controllers, and measurement or data-logging instruments where 256 KB flash and 79 I/O lines give adequate headroom for RTOS-based firmware. Design consideration: supply the core from the integrated regulator (1.2V) and I/O from 3.3V, and decouple both rails close to the package to guarantee 120 MHz operation across the full industrial temperature range. This page synthesizes distributor pricing, drop-in alternatives, pinout resources, and practical design notes not found in the manufacturer datasheet. Pricing is as of 2026-09-20.

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ATSAM4S4CB-CFN

ATSAM4S4CB-CFN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4CB-CFN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 256 KB (256K x 8) single-cycle Flash memory and a 100-ball VFBGA (7x7 mm) package. A microcontroller unit (MCU) is a complete embedded computer on a single chip, combining a processor core, memory, and peripherals. The ARM Cortex-M4 is a 32-bit RISC processor core widely used in embedded systems, positioned above entry-level Cortex-M0 parts and below high-performance application processors. Within the power/performance hierarchy, MCUs like this sit at the heart of the embedded processing chain: semiconductor -> 32-bit MCU -> ARM Cortex-M4 -> SAM4S series. Key differentiating features include the 120 MHz maximum core frequency, the Cortex-M4 DSP instructions and optional floating-point acceleration for math-heavy workloads, and a compact 7x7 mm ball-grid-array footprint suited to space-constrained boards. Per the SAM4S family datasheet, the series integrates a full-speed USB Device port with embedded transceiver, up to 160 KB of SRAM across family variants, dual-bank Flash options, and a rich peripheral set including UART/USART, SPI, TWI (I2C), ADC, PWM, and a real-time clock. Technically, the ATSAM4S4CB-CFN implements a Harvard architecture with a memory protection unit, supports 1.2V/3.3V supply domains per distributor specifications, and is rated for the industrial temperature range with a 105C maximum rating noted by Mouser for the GREEN, MRL B ball-matrix variant. The VFBGA100 substrate provides short interconnects that improve signal integrity and reduce board area compared with quad flat-pack equivalents. Typical applications include industrial control panels, consumer devices requiring USB connectivity, data-logging systems, motor control front-ends, and embedded gateways where DSP filtering and compact BGA packaging matter. Design consideration: BGA packages require X-ray inspection for solder-joint verification and a controlled-reflow PCB process; verify the 0.8 mm ball pitch against your fabricator capabilities before committing to the 7x7 mm VFBGA footprint. This page synthesizes verified distributor data, same-footprint drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4CB-CFNR

ATSAM4S4CB-CFNR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4CB-CFNR 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 100-ball VFBGA (7x7 mm) package rated for ambient temperatures up to 105 C. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripheral set on one die, forming the lowest layer of the embedded system hierarchy: MCU -> embedded processor -> system-on-chip. The SAM4S family sits within Microchip's (formerly Atmel) ARM-based MCU portfolio and belongs to the Cortex-M class of 32-bit RISC controllers, which are widely used where deterministic real-time behavior and low power matter more than raw throughput. Key differentiators of the ATSAM4S4CB-CFNR include the Cortex-M4 core with DSP instructions and FPU-free integer pipeline, 120 MHz maximum clock frequency, 256 KB of single-cycle Flash, and a rich peripheral mix typical of the SAM4S series. The compact 7x7 mm VFBGA-100 footprint provides high I/O density in minimal board area, making it attractive for space-constrained designs that still need substantial connectivity and processing headroom. Architecturally, the device uses a 3-stage pipelined Harvard-architecture Cortex-M4 with a nested vectored interrupt controller (NVIC), enabling deterministic interrupt latency. Flash and SRAM are tightly coupled to the core bus matrix, and the Flash accelerator buffers help sustain near-zero-wait-state execution at full speed. The SAM4S series is supported by Microchip's Atmel Studio / MPLAB X ecosystem and the SAM4S-XPLAINED evaluation platform, with a well-documented peripheral driver library. Typical applications include industrial control and factory automation nodes, consumer and portable devices, and embedded networking or data-logging equipment where the 105 C ambient rating and industrial temperature behavior provide design margin. The BGA package suits two-sided, dense PCB assemblies such as sensor hubs and compact HMI boards. A key design consideration: VFBGA packages demand precise PCB land patterns and reflow profiling, and the balls are not probe-friendly for debugging - plan access to SWD test points early. Verify the exact SAM4S4CB-CFNR pin configuration against the manufacturer datasheet before layout. This page synthesizes distributor pricing tiers, drop-in alternatives, design notes, and FAQ content not consolidated in the manufacturer datasheet, providing engineers a single actionable reference.

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ATSAM4S4CB-CN

ATSAM4S4CB-CN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S4CB-CN is a 32-bit ARM Cortex-M4 microcontroller running at 120 MHz with 256 KB of embedded Flash memory and 64 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package qualified for extended temperature operation up to 105C. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, memory, and peripherals on one die. Within the semiconductor hierarchy, the ATSAM4S4CB-CN belongs to the ARM Cortex-M family of 32-bit MCUs, which sits under the broader categories of embedded processors and system-on-chip devices. The SAM4S series is Microchip's (formerly Atmel) mainstream Flash MCU line for cost-sensitive embedded control. Key features include the ARM Cortex-M4 core with DSP instructions and single-cycle MAC, 120 MHz maximum clock frequency, 256 KB (256K x 8) on-chip Flash, 64 KB SRAM, and a rich peripheral set including 3 SPI ports, 4 UARTs, and 2 I2C interfaces as confirmed by distributor parametric data. Internal oscillator options at 4, 8, 12 MHz plus 32 kHz reduce external component count. The Cortex-M4 architecture brings hardware divide, DSP extensions, and FPU-class math throughput suited to digital filtering and motor control algorithms, while the SAM4S peripheral bus supports fast DMA-driven data movement. Extended temperature rating to 105C and Microchip's GREEN, RoHS-oriented TFBGA packaging target industrial and outdoor deployments. Typical applications include industrial automation nodes, motor control and power conversion, embedded IoT sensor gateways, and portable instrumentation, where 120 MHz headroom and 256 KB Flash cover protocol stacks plus application code. Design consideration: 9x9 mm 100-ball TFBGA demands fine-pitch PCB design with controlled-impedance fan-out; verify your assembly house supports 0.8 mm ball pitch BGA inspection. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4CB-CNR

ATSAM4S4CB-CNR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4CB-CNR is a 32-bit ARM Cortex-M4 microcontroller running at 120 MHz with 256 KB of embedded Flash memory and 64 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package qualified for extended temperature operation up to 105C. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, memory, and peripherals on one die. Within the semiconductor hierarchy, the ATSAM4S4CB-CNR belongs to the ARM Cortex-M family of 32-bit MCUs, which sits under the broader categories of embedded processors and system-on-chip devices. The SAM4S series is Microchip's (formerly Atmel) mainstream Flash MCU line for cost-sensitive embedded control. Key features include the ARM Cortex-M4 core with DSP instructions and single-cycle MAC, 120 MHz maximum clock frequency, 256 KB (256K x 8) on-chip Flash, 64 KB SRAM, and a rich peripheral set including 3 SPI ports, 4 UARTs, and 2 I2C interfaces as confirmed by distributor parametric data. Internal oscillator options at 4, 8, 12 MHz plus 32 kHz reduce external component count. The Cortex-M4 architecture brings hardware divide, DSP extensions, and FPU-class math throughput suited to digital filtering and motor control algorithms, while the SAM4S peripheral bus supports fast DMA-driven data movement. Extended temperature rating to 105C and Microchip's GREEN, RoHS-oriented TFBGA packaging target industrial and outdoor deployments. Typical applications include industrial automation nodes, motor control and power conversion, embedded IoT sensor gateways, and portable instrumentation, where 120 MHz headroom and 256 KB Flash cover protocol stacks plus application code. Design consideration: 9x9 mm 100-ball TFBGA demands fine-pitch PCB design with controlled-impedance fan-out; verify your assembly house supports 0.8 mm ball pitch BGA inspection. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S8BA-AN

ATSAM4S8BA-AN - SAM4S 120MHz Cortex-M4 MCU 512KB | Microchip

The Microchip ATSAM4S8BA-AN is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, integrating 512KB of Flash and 128KB of SRAM, and operating at up to 120 MHz in a 64-pin LQFP (10x10 mm) form factor. The device supplies 3.2 to 3.6 V on its main VDDIO/VDDCORE rail and supports a wider 1.62 V to 3.6 V operating range when the internal voltage regulator is enabled, drawing approximately 200 uA/MHz in active mode. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. Within the broader taxonomy, the ATSAM4S8BA-AN belongs to the class of ARM Cortex-M4 microcontrollers -> 32-bit microcontrollers -> embedded microcontrollers -> microcontrollers -> integrated circuits (ICs) -> semiconductors. Cortex-M4 devices specifically add single-precision FPU support, DSP extensions, and a Memory Protection Unit (MPU), placing them above Cortex-M3 in computational capability while retaining deterministic interrupt latency. Key features include a hardware Floating Point Unit (FPU) for single-precision IEEE-754 math, an 8 KB instruction cache plus Flash read accelerator, multi-layer bus matrix, multi-channel peripheral DMA, and a full-speed USB 2.0 device with on-chip PHY. Peripherals include up to five USARTs, two UARTs, two TWIs, two SPIs, an I²S, a 12-bit 1 Msps ADC, a 12-bit DAC, and a 16-bit timer/counter block. The 64-LQFP package is pin-to-pin compatible with SAM7S, SAM3N, and SAM3S families, easing migration across the Microchip portfolio. The SAM4S architecture is built around an advanced high-performance bus (AHB) matrix that connects the Cortex-M4 core, SRAM, Flash and peripherals through parallel paths to deliver the 120 MHz throughput with deterministic access. An integrated SleepWalking peripheral event controller, low-power RTC, and backup domain enable deep-sleep states below 1 uA in Wait mode and below 1 uA in Backup mode. Typical applications include industrial control and HMI panels, USB-equipped smart sensors and barcode scanners, motor control, smart energy metering, and Point-of-Sale terminals where deterministic real-time response and on-chip analog integration reduce BOM cost. For portable or battery-powered designs, the low-power Run and Wait modes (when available) extend runtime without sacrificing processing headroom. When designing with the ATSAM4S8BA-AN, verify VDDIO decoupling with 100 nF X7R ceramics placed within 3 mm of each supply pin, and ensure the 12 MHz external crystal or 32.768 kHz low-frequency crystal is laid out per the SAM4S hardware design guidelines to meet USB jitter requirements. The pin-to-pin compatibility with SAM7S/SAM3N/SAM3S allows direct footprint reuse when migrating code from older Atmel parts. This page synthesizes distributor pricing, drop-in compatible SAM4S8 family variants, cross-family SAM3N/SAM3S migration options, and practical hardware design notes not found in the manufacturer datasheet.

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ATSAM4S8BA-ANR

ATSAM4S8BA-ANR - ARM Cortex-M4 120MHz 512KB MCU | Microchip

The Microchip Technology ATSAM4S8BA-ANR is an ARM Cortex-M4 32-bit microcontroller from the SAM4S family, delivering 120 MHz CPU performance with 512 KB of Flash and 128 KB of SRAM in a 64-pin LQFP (10x10 mm) package. It operates from a 1.62 V to 3.6 V supply and is supplied in tape-and-reel packaging (TR) for high-volume SMT production lines. An ARM Cortex-M microcontroller is a 32-bit RISC processor core designed for embedded applications that require deterministic real-time response, low power, and rich peripheral integration. The Cortex-M4 variant adds a single-precision FPU and DSP extensions, sitting between the smaller Cortex-M0/M0+ and the higher-end Cortex-M7 in the ARM v7-M architecture hierarchy. Microcontrollers in this class integrate the CPU core, on-chip non-volatile memory, SRAM, and a wide peripheral set into a single package, replacing many discrete components in industrial, consumer, and IoT designs. Key features of the ATSAM4S8BA-ANR include a Cortex-M4 core with FPU and DSP instructions, 512 KB Flash, 128 KB SRAM, and an enhanced Peripheral Touch Controller supporting capacitive touch interfaces. It provides a wide range of connectivity peripherals including USB 2.0 Full-Speed, up to two CAN controllers, multiple USART/SPI/TWI interfaces, an 8-channel 10-bit ADC, and a 16-bit PWM timer. The device targets industrial and consumer applications that demand deterministic real-time performance with low power consumption. At the architectural level the SAM4S uses an advanced 90 nm process and integrates a high-bandwidth multi-layer AHB/APB bus matrix. The Cortex-M4 core implements Thumb-2 instruction set with hardware single-cycle MAC and saturating arithmetic, enabling DSP workloads such as audio processing, motor control loops, and sensor fusion without external DSP chips. Up to 8 DMA channels offload data movement between peripherals and memory, further freeing CPU bandwidth. Typical applications for the ATSAM4S8BA-ANR include industrial control and HMI panels, USB peripherals, motor control for BLDC and stepper drives, smart metering, sensor hubs, and home automation gateways. Designers value the part for its deterministic interrupt latency, mature Atmel/Microchip software ecosystem (ASF, Harmony 3), and pin-compatibility with SAM4N, SAM3S, SAM3N and SAM7S legacy 64-pin devices for easy migration. Design consideration: ensure decoupling capacitors (100 nF ceramic plus 4.7 uF bulk) are placed within 5 mm of the VDDCORE and VDDIO pins, and that the NRST line is pulled up correctly to guarantee clean Cortex-M4 startup. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S8BA-AU

ATSAM4S8BA-AU - ARM Cortex-M4 120MHz 512KB MCU | Microchip

The Microchip ATSAM4S8BA-AU is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, integrating 512 KB of Flash and 128 KB of SRAM in a 64-pin LQFP (10x10 mm) package. It belongs to the SAM4S family, which combines a high-performance Cortex-M4 core with DSP extensions, a Memory Protection Unit (MPU), and a 2 KB instruction cache to sustain deterministic real-time response. The device also includes a full-speed USB 2.0 device port with on-chip transceiver, a 12-bit ADC, up to two UARTs, two TWI (I2C-compatible) modules, SPI, I2S, SDIO/SD/MMC, and a 16-bit PWM timer block. An ARM Cortex-M4 microcontroller is a 32-bit processor core from ARM's Cortex-M family optimized for embedded deterministic control. It combines the Thumb-2 instruction set with single-cycle multiply-accumulate and optional DSP extensions, allowing efficient signal-processing workloads alongside classical MCU tasks. Microcontrollers sit hierarchically below microprocessors in the broader semiconductor taxonomy: MCU -> embedded processor -> integrated circuit -> semiconductor. The SAM4S family specifically targets industrial and consumer applications that need low power, USB connectivity, and a Cortex-M class core with strong code-density. Key features of the ATSAM4S8BA-AU include pin-to-pin compatibility with Microchip SAM3N, SAM3S and SAM7S legacy devices, enabling straightforward migration of existing 64-pin and 100-pin designs. The integrated voltage regulator supports a single 1.62V to 3.6V supply, and the part includes a low-power RTC, a fast 12-bit 1 Msps ADC, and hardware crypto accelerators on certain family members. The Cortex-M4 core delivers 1.25 DMIPS/MHz with DSP instructions for audio and motor-control algorithms. Typical applications include industrial control panels, USB-connected consumer devices, smart-metering endpoints, HMI touch controllers, motor-control BLDC/PMSM drives, and portable medical instruments. The wide peripheral mix also suits connected sensor hubs and home-automation gateways. When designing with this part, ensure the 64-pin LQFP thermal pad is properly soldered to a copper pour to keep junction temperature within the -40C to +85C industrial range. Decoupling must include a 100 nF capacitor on each VDD pin plus a bulk 4.7 uF capacitor near the voltage regulator output.

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ATSAM4S8BA-AUR

ATSAM4S8BA-AUR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4S8BA-AUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 512 KB of embedded Flash and 128 KB of SRAM, housed in a 64-pin LQFP (10x10 mm) package supplied on tape and reel. The device integrates a high-performance Cortex-M4 core with single-precision FPU, a Multi-purpose Communication Controller (USART, UART, SPI, TWI, I2S), an 11-channel 12-bit ADC, a 2-channel 12-bit DAC, USB 2.0 Full-Speed with on-chip transceiver, and a 16-bit external bus interface. The 1.62 V to 3.6 V supply range supports battery-powered and industrial 3.3 V designs, while power consumption is rated at 200 uA/MHz active, enabling low-power embedded applications. A microcontroller (MCU) is an integrated circuit that combines a processor core, program memory (Flash), working memory (SRAM), and a rich set of peripherals on a single silicon die. ARM Cortex-M4 cores are a de facto industry standard for 32-bit embedded designs because they balance deterministic interrupt response, DSP extensions, and an optional single-precision Floating Point Unit (FPU) with low energy per MHz. The SAM4S family sits in Microchip's Atmel-origin ARM lineup, which traces through Cortex-M3 predecessors into the current SAME/SAMD/SAMV71 lineages. Within the broader taxonomy, the ATSAM4S8B is a microcontroller -> embedded processor -> integrated circuit -> semiconductor. Key differentiating features include: 512 KB Flash supporting in-application programming (IAP) via a dedicated ROM bootloader, 128 KB SRAM with single-cycle access at 120 MHz, a 12-bit ADC at up to 1 Msps with hardware triggering, and an integrated high-speed USB 2.0 Full-Speed PHY that eliminates external transceiver cost. The 64-LQFP package provides ample GPIO for human-machine interface and motor-control subsystems without requiring a BGA fan-out. The architecture is built around an AHB/APB multi-layer bus matrix that allows simultaneous DMA-driven peripheral activity while the CPU executes application code. The Cortex-M4 core includes a Memory Protection Unit (MPU) for robust RTOS deployment and a Nested Vectored Interrupt Controller (NVIC) with deterministic interrupt latency, making the part suitable for hard-real-time industrial protocols. Typical applications include industrial control PLCs, USB-connected human-interface devices, home appliance controllers, smart energy metering, low-end motor drives (FOC for small BLDC fans/pumps), and medical point-of-care instruments. Designers appreciate the SAM4S family for its mature Atmel Studio / Microchip Studio toolchain, ASF (Atmel Software Framework) drivers, and the SAM-BA bootloader. When designing with this device, ensure the 1.62 V minimum supply is observed for full 120 MHz operation; at lower VDD the maximum clock is derated. Decouple VDD and VDDCORE with 100 nF X7R ceramic capacitors placed within 3 mm of each pin pair, and route the USB DP/DM pair as a 90-ohm differential with matched length. This page synthesizes distributor pricing, drop-in SAM4S pin-compatible alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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ATSAM4S8BA-MU

ATSAM4S8BA-MU - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip

The Microchip Technology ATSAM4S8BA-MU is an ARM Cortex-M4 based 32-bit Flash microcontroller running at up to 120 MHz, with 512 KB of Flash and 128 KB of SRAM, housed in a 64-pin QFN (9x9 mm) industrial-temperature package. The device integrates a 2 KB instruction cache, a Memory Protection Unit (MPU), DSP instruction extensions, and the Thumb-2 instruction set, while operating from a 1.62 V to 3.6 V supply and consuming approximately 200 uA/MHz. What is a Cortex-M4 microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and peripherals. The Cortex-M4 is an ARM processor core that adds DSP instructions and a single-precision floating-point unit (FPU), making it suitable for signal-processing tasks while maintaining the low-power and deterministic interrupt behaviour of the Cortex-M family. Within the broader taxonomy, the ATSAM4S8BA-MU belongs to the SAM4S series, which sits in Microchip's SMART ARM-based Flash MCU family, bridging industrial control and connected-embedded applications. Key features of the ATSAM4S8BA-MU include up to 120 MHz core speed with DSP extensions, 512 KB Flash, 128 KB SRAM, an MPU for OS-level memory isolation, and pin-to-pin compatibility with SAM3N, SAM3S, and SAM7S legacy devices in the 64-pin and 100-pin variants. The device supports up to 47 I/O lines, multiple communication peripherals (USART, SPI, TWI, USB 2.0 Full-Speed), and analog blocks including a 12-bit ADC and a 12-bit DAC. From an architectural perspective, the SAM4S uses a Harvard bus architecture with separate instruction and data paths, enabling zero-wait-state Flash execution up to 120 MHz when configured with the on-chip cache. The integrated voltage regulator with on-chip decoupling reduces external BOM, while the brown-out detector and watchdog timer improve field reliability in industrial environments. Typical applications include industrial control panels, smart metering, point-of-sale terminals, consumer white goods, USB peripherals, and motor-control subsystems. The combination of Cortex-M4 DSP performance, generous SRAM, and a wide operating voltage range also suits low-power connected sensor hubs. According to Microchip, the SAM4S family is designed for scalable performance and memory density with low active and standby power. When designing with this MCU, ensure that decoupling capacitors are placed close to the VDDCORE and VDDIO pins, and that the NRST reset circuit meets the minimum pulse-width specification. Developers using Atmel Studio 7 / Microchip Studio and the ASF / Harmony framework will benefit from existing peripheral drivers for the SAM4S platform. This page synthesises distributor pricing, drop-in alternatives, pin-compatibility notes, and practical design guidance not found in the standalone manufacturer datasheet.

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ATSAM4S8BA-MUR

ATSAM4S8BA-MUR - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S8BA-MUR is an ARM Cortex-M4 based 32-bit Flash microcontroller running at up to 120 MHz, with 512 KB of Flash and 128 KB of SRAM, housed in a 64-pin QFN (9x9 mm) industrial-temperature package. The device integrates a 2 KB instruction cache, a Memory Protection Unit (MPU), DSP instruction extensions, and the Thumb-2 instruction set, while operating from a 1.62 V to 3.6 V supply and consuming approximately 200 uA/MHz. What is a Cortex-M4 microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and peripherals. The Cortex-M4 is an ARM processor core that adds DSP instructions and a single-precision floating-point unit (FPU), making it suitable for signal-processing tasks while maintaining the low-power and deterministic interrupt behaviour of the Cortex-M family. Within the broader taxonomy, the ATSAM4S8BA-MUR belongs to the SAM4S series, which sits in Microchip's SMART ARM-based Flash MCU family, bridging industrial control and connected-embedded applications. Key features of the ATSAM4S8BA-MUR include up to 120 MHz core speed with DSP extensions, 512 KB Flash, 128 KB SRAM, an MPU for OS-level memory isolation, and pin-to-pin compatibility with SAM3N, SAM3S, and SAM7S legacy devices in the 64-pin and 100-pin variants. The device supports up to 47 I/O lines, multiple communication peripherals (USART, SPI, TWI, USB 2.0 Full-Speed), and analog blocks including a 12-bit ADC and a 12-bit DAC. From an architectural perspective, the SAM4S uses a Harvard bus architecture with separate instruction and data paths, enabling zero-wait-state Flash execution up to 120 MHz when configured with the on-chip cache. The integrated voltage regulator with on-chip decoupling reduces external BOM, while the brown-out detector and watchdog timer improve field reliability in industrial environments. Typical applications include industrial control panels, smart metering, point-of-sale terminals, consumer white goods, USB peripherals, and motor-control subsystems. The combination of Cortex-M4 DSP performance, generous SRAM, and a wide operating voltage range also suits low-power connected sensor hubs. According to Microchip, the SAM4S family is designed for scalable performance and memory density with low active and standby power. When designing with this MCU, ensure that decoupling capacitors are placed close to the VDDCORE and VDDIO pins, and that the NRST reset circuit meets the minimum pulse-width specification. Developers using Atmel Studio 7 / Microchip Studio and the ASF / Harmony framework will benefit from existing peripheral drivers for the SAM4S platform. This page synthesises distributor pricing, drop-in alternatives, pin-compatibility notes, and practical design guidance not found in the standalone manufacturer datasheet.

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ATSAM4S8BB-AN

ATSAM4S8BB-AN - 120MHz Cortex-M4 MCU | Microchip

The Microchip Technology ATSAM4S8BB-AN is a 32-bit ARM Cortex-M4 microcontroller rated for operation up to 120 MHz, with 512 KB of Flash memory, 128 KB of SRAM, and a 64-LQFP 10 mm x 10 mm package. The device operates from a 1.62 V to 3.6 V supply and combines a high-performance processor core with embedded data storage and communication peripherals. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, peripherals, and interface logic into one device. In the product hierarchy, this part is an ARM Cortex-M4 MCU, a 32-bit RISC microcontroller, a semiconductor, and a programmable embedded-control component. Its combination of Flash program memory, SRAM working memory, and high operating frequency supports both control tasks and data-intensive embedded applications without a separate external memory interface. The verified product information identifies a maximum clock frequency of 120 MHz, 512 KB Flash, 128 KB SRAM, a 1.62 V to 3.6 V operating supply, and 200 uA/MHz power consumption. The ATSAM4S8BB-AN is packaged in a green, extended-temperature 64-LQFP. Its 32-bit architecture provides substantially more arithmetic and addressing capability than an 8-bit MCU, while the integrated 512 KB Flash supports larger embedded programs and 128 KB SRAM provides working space for protocol handling, buffers, and control logic. Typical applications include USB-connected embedded controllers, industrial equipment, communication modules, data acquisition systems, and compact control platforms. The 120 MHz operating speed allows the Cortex-M4 core to process multiple interrupts, peripheral transfers, and control loops efficiently. The device is suitable when firmware requires more memory and processing capability than a basic 8-bit or low-cost 16-bit microcontroller, provided the board design follows the electrical and pin requirements specified by the manufacturer. The primary design consideration is supply integrity. The operating range begins at 1.62 V and extends to 3.6 V, so the power rail, decoupling capacitors, reset circuitry, clock configuration, and I/O voltage limits must be checked against the manufacturer documentation. Because exact peripheral, pin, and electrical details are not supplied in the verified excerpts, do not infer those values from the family description. This product data combines the verified Microchip family specifications with distributor sourcing information and distinguishes verified facts from fields requiring datasheet confirmation. It is intended for engineers evaluating the ATSAM4S8BB-AN for embedded industrial, communication, and USB-related designs.

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