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ATSAM4S2CB-ANR - 120MHz Cortex-M4 MCU 128KB Flash | Microchip
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-CNR - 120MHz Cortex-M4 MCU 128KB Flash | Microchip
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 - 120MHz ARM Cortex-M4 MCU 256KB Flash | Microchip
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 - Cortex-M4 120MHz MCU 256KB Flash | Microchip
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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ATSAM4S4AA-MU - 120MHz Cortex-M4, 256KB MCU | Microchip
ATSAM4S4AA-MU

ATSAM4S4AA-MU - 120MHz Cortex-M4, 256KB MCU | Microchip

The Microchip Technology ATSAM4S4AA-MU is a 32-bit ARM Cortex-M4 microcontroller with FPU operating at up to 120 MHz, integrating 256KB of single-cycle flash memory and 64KB of SRAM in a 48-pin QFN (7x7 mm) exposed-pad package. It runs from a 1.62V to 3.6V supply and integrates an 8-channel 12-bit ADC, making it suitable for mixed-signal embedded systems. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip. Within the semiconductor hierarchy, the SAM4S sits in the 32-bit flash MCU family, part of the broader ARM Cortex-M ecosystem that spans everything from low-power sensor nodes to industrial control boards. Microchip acquired Atmel in 2016, so the SAM4S series datasheets are published under the Microchip Technology name. Key differentiating features of the ATSAM4S4AA-MU include the Cortex-M4 core with hardware DSP instructions and single-precision FPU, a maximum clock speed of 120 MHz, 256KB of in-system-programmable flash, and low-power operation as low as 180 uA in backup-related modes per the Microchip product page. The device also provides standard SAM4S peripherals such as UART/USART, SPI, TWI (I2C), PWM channels, and DMA for offloading data movement from the CPU. Architecturally, the SAM4S series is based on the ARMv7E-M Cortex-M4 core with a Harvard bus structure, providing deterministic single-cycle flash access with cache/accelerator layers that sustain full-speed execution at 120 MHz. The Cortex-M4 DSP extension accelerates MAC and SIMD operations useful in motor control, digital filtering, and sensor fusion workloads. Typical applications include industrial automation nodes, motor control, consumer appliances, IoT sensor gateways, and portable battery-powered instruments, where the combination of 256KB flash and a 12-bit ADC reduces external component count. The SAM4S series offers pin-to-pin compatibility with SAM4N, SAM3S, SAM3N, and SAM7S devices, easing memory and performance migration. When designing with this MCU, budget the flash for bootloader plus application and verify that 64KB SRAM is sufficient for DMA buffers and stacks; for heavier DSP workloads consider the FPU-enabled build options. This page synthesizes distributor pricing, pin-compatible alternatives, and design guidance not found in the manufacturer datasheet alone.

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ATSAM4S4AB-AN - Cortex-M4 120MHz 256KB MCU | Microchip
ATSAM4S4AB-AN

ATSAM4S4AB-AN - Cortex-M4 120MHz 256KB MCU | Microchip

The Microchip Technology ATSAM4S4AB-AN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 256KB (256K x 8) of embedded Flash memory, housed in a 48-pin LQFP (7x7 mm) surface-mount package rated for the industrial temperature range of -40C to +105C. It belongs to the SAM4S family of high-performance, low-power MCUs from Microchip (formerly Atmel). A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data RAM, and a rich set of peripherals into one chip, forming the backbone of embedded systems. Within the voltage-regulator-like hierarchy of embedded components, the SAM4S sits at the mid-to-high tier of Microchip's ARM-based MCU portfolio, positioned above the Cortex-M0+ SAMD series and pin-compatible with the SAM7S, SAM3N, SAM3S, and SAM4N families, enabling straightforward migration between price/performance points. Key features of the ATSAM4S4AB-AN include the 120 MHz Cortex-M4 core with DSP instructions, 256KB of Flash program memory, on-chip connectivity peripherals (I2C/TWI, SPI, UART/USART, SSC, USB 2.0 device, IrDA, and memory-card interfaces), and system peripherals such as DMA, PWM, watchdog timer (WDT), brown-out detect/reset, and power-on reset (POR). The device provides 34 general-purpose I/O pins in the 48-LQFP footprint. Architecturally, the Cortex-M4 core features a 3-stage pipeline and single-cycle MAC, giving efficient signal-processing capability for motor control and digital filtering. The Flash accelerator minimizes wait-state penalties at full 120 MHz operation, while the multi-layer bus matrix and DMA allow peripherals to move data without core intervention, reducing real-time latency. Typical applications include industrial automation and control nodes, consumer appliances, USB-connected instrumentation, and motor-control or touch-sensing systems using Microchip QTouch technology, which is natively supported by the SAM4S peripheral set. A key design consideration is power budgeting: at 120 MHz, active current is substantially higher than in low-speed sleep modes, so designers should exploit the SAM4S sleep, wait, and backup modes to hit energy targets in battery-powered designs. This page synthesizes distributor pricing, drop-in same-family alternatives, application guidance, and design notes not found in the manufacturer datasheet.

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ATSAM4S4AB-ANR - 120MHz Cortex-M4 256KB MCU | Microchip
ATSAM4S4AB-ANR

ATSAM4S4AB-ANR - 120MHz Cortex-M4 256KB MCU | Microchip

The Microchip Technology ATSAM4S4AB-ANR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz with 256 KB of embedded flash and 64 KB of SRAM, housed in a 48-pin LQFP (7x7 mm) surface-mount package on tape and reel. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, memory, and programmable peripherals on one die, sitting within the broader hierarchy of embedded processors beneath MPUs and application processors. The SAM4S family belongs to Microchip (formerly Atmel) ARM-based flash MCUs, positioned for cost-sensitive embedded control where a 32-bit core, DSP instructions, and a rich peripheral set are required in a small footprint. Key features include the Cortex-M4 core with DSP extension and a single-cycle hardware multiplier/floating-point capable instruction set, 120 MHz maximum CPU frequency, 256 KB (256K x 8) of flash memory for code storage, and an industrial temperature grade of -40C to +105C. The device operates from a single supply in the 1.62V to 3.6V range with a nominal 3.3V rail. The SAM4S architecture provides an extensive peripheral set for connectivity, system control, and analog interfacing, including UART/USART serial channels, SPI, TWI (I2C), timers, PWM, an ADC, and a DMA controller for data movement without CPU intervention. Native support for Microchip QTouch capacitive touch technology enables buttons, sliders, and wheels without external components. Per the SAM4S family product page, the family is pin-to-pin compatible with Microchip SAM7S, SAM3N, SAM4N, and SAM3S MCUs, simplifying migration across memory and performance tiers within the same PCB footprint. Typical applications include industrial automation and control nodes, consumer and IoT devices with capacitive touch interfaces, motor control and power conversion, and embedded connectivity bridges where a 120 MHz 32-bit core with DMA-accelerated serial transfers is beneficial. When designing with this device, budget the flash for bootloader plus application and consider the pin-compatible larger-memory SAM4S variants for upgrade headroom. Follow Microchip layout guidance for decoupling and VDDIO/VDDCORE domains. This page synthesizes verified distributor pricing, drop-in alternatives within the pin-compatible SAM4S/SAM3S ecosystem, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4AB-MN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
ATSAM4S4AB-MN

ATSAM4S4AB-MN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4AB-MN is a 32-bit ARM Cortex-M4 flash microcontroller operating at up to 120 MHz, with 256 KB of embedded flash memory and 64 KB of SRAM, housed in a 48-pin QFN (7x7 mm) exposed-pad package rated from -40C to +105C. A microcontroller unit (MCU) integrates a processor core, memory, and peripherals on a single chip, sitting at the device level of the embedded-systems hierarchy: integrated circuit -> microcontroller -> embedded control system. The SAM4S series belongs to Microchip's (formerly Atmel) SMART ARM-based MCU family, positioned for cost-sensitive, high-performance embedded control. Key features include the ARM Cortex-M4 core with DSP instructions and a single-cycle hardware MAC, a full-speed USB 2.0 Device port with embedded transceiver, a 12-bit ADC, and pin-to-pin compatibility with the SAM7S, SAM3S, SAM3N, and SAM4N MCU families. The device operates from a single 1.62V to 3.6V supply and supports Microchip QTouch capacitive touch technology natively. Technically, the SAM4S integrates a flash accelerator and optional cache to sustain near-zero-wait-state execution at 120 MHz, plus a rich peripheral set covering UART/USART, SPI, TWI (I2C), PWM timers, and a real-time clock, enabling connectivity, system control, and analog interfacing in one chip. Typical applications include industrial automation nodes, consumer appliances, motor control, USB-enabled sensing devices, and capacitive-touch human-machine interfaces where 120 MHz headroom and flash density up to 256 KB are required. Design consideration: the 48-QFN exposed pad must be soldered to a grounded copper pour for thermal dissipation and signal integrity; plan decoupling capacitors on all VDDIO/VDDCORE pairs per the datasheet power scheme. This page synthesizes verified distributor pricing, drop-in SAM4S family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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

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

The Microchip Technology ATSAM4S4BA-AU is a 32-bit ARM Cortex-M4 microcontroller rated up to 120 MHz, with 256 KB of embedded Flash, 64 KB of SRAM, and a 64-pin LQFP package measuring 10 x 10 mm. The supplied distributor record identifies the device as a SAM4S microcontroller with 1.2 V and 3.3 V supply references, making it suitable for embedded control systems requiring a high-performance 32-bit core and substantial local memory. A microcontroller is a programmable system-on-chip that integrates a processor core, nonvolatile program memory, volatile working memory, and peripherals such as serial interfaces, timers, and analog or digital I/O. The ATSAM4S4BA belongs to Microchip's SAM4S family, placing it in the embedded-processing hierarchy of ARM Cortex-M4 MCU, 32-bit microcontroller, embedded controller, and semiconductor. The verified feature set includes an ARM Cortex-M4 processor operating up to 120 MHz, a Memory Protection Unit, DSP instructions, and the Thumb-2 instruction set. Its 256 KB Flash provides program storage, while 64 KB of SRAM supports data and execution. The Flash is described as embedded and ECC-enabled, with security and lock bits. These characteristics support firmware-heavy control, signal processing, communications, and general industrial applications. SAM4S devices also feature a dual-bank Flash architecture according to the Microchip product result. Dual-bank support can improve field-update flexibility by permitting organized flash-management strategies, but project engineers must follow the manufacturer's programming and bootloader procedures rather than assume unrestricted simultaneous execution. Typical uses include industrial automation controllers, connected embedded equipment, motor and motion-control systems, industrial communications, and compact data-acquisition platforms. The 120 MHz Cortex-M4 core and DSP capability are particularly useful when control-loop timing and fixed-point signal processing must coexist with communications firmware. Design planning should begin with the exact 64-pin LQFP footprint, supported power architecture, clock configuration, and peripheral pin multiplexing. Because the provided web results do not expose a complete pin table or individual I/O specifications, those details must be confirmed in the manufacturer datasheet before PCB routing or firmware resource assignment. This page consolidates verified distributor specifications, package information, sourcing links, and design-oriented guidance. It also separates confirmed data from unavailable parameters, allowing engineers to assess the ATSAM4S4BA-AU quickly while preserving traceability to the manufacturer and distributor records retrieved on 2026-10-23.

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ATSAM4S4BA-UUR - 120MHz Cortex-M4 MCU 256KB Flash WLCSP-64
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-ANR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
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 - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
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 - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
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-AU - 120MHz Cortex-M4 256KB Flash MCU | Microchip
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 - 120MHz Cortex-M4 MCU, 256KB Flash | Microchip
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 - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
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 - 120MHz Cortex-M4, 256KB Flash MCU | Microchip
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-CFN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
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 - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
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-CNR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
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 - SAM4S 120MHz Cortex-M4 MCU 512KB | Microchip
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 - ARM Cortex-M4 120MHz 512KB MCU | Microchip
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 - ARM Cortex-M4 120MHz 512KB MCU | Microchip
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 - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
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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