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ATSAM4S16BB-ANR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4S16BB-ANR

ATSAM4S16BB-ANR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4S16BB-ANR is a 32-bit ARM Cortex-M4 flash microcontroller in the SAM4S series, operating at up to 120 MHz with 1 MB (1M x 8) of embedded Flash and housed in a 64-pin LQFP (10 x 10 mm) surface-mount package. A microcontroller unit (MCU) integrates a processor core, program memory, data memory, and peripherals on a single chip, sitting at the heart of embedded systems as the central element of the power-management and control hierarchy. The ARM Cortex-M4 architecture targets mid-range embedded control, combining 32-bit processing performance with deterministic real-time behavior and low interrupt latency. Key features of the ATSAM4S16BB-ANR include the high-performance Cortex-M4 RISC core at 120 MHz, 1 MB of embedded Flash with optional dual-bank implementation and cache memory, and very low power consumption of approximately 200 uA/MHz as stated on the Microchip product page. The supply range of 1.62 V to 3.6 V supports both 1.8 V and 3.3 V systems, and the peripheral set includes a full-speed USB Device port per the SAM4S family datasheet. The SAM4S series architecture adds a hardware integer multiplier-accumulator (MAC), optional floating-point-style DSP instructions from the Cortex-M4 core, and an embedded 16 KB ROM containing boot loader routines (UART, USB) and IAP (In-Application Programming) routines, simplifying field firmware updates without external programming hardware. Typical applications include industrial automation and control nodes, consumer appliances, and USB-connected embedded devices, where the combination of 1 MB Flash, 120 MHz throughput, and a USB Device port covers data logging, HMI, and bridging roles. The 64-pin LQFP makes it a natural upgrade or consolidation path within legacy boards. A key design consideration: the ATSAM4S16BB-ANR is pin-to-pin compatible with the SAM3N, SAM3S, SAM4N, and SAM7S legacy series in the 64-pin version, allowing designers to migrate older designs with a footprint-preserving swap, though software must be recompiled for the Cortex-M4. This page synthesizes distributor pricing, drop-in alternatives within the SAM4S family, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM4S16CA-AN - Cortex-M4 120MHz 1MB Flash MCU | Microchip
ATSAM4S16CA-AN

ATSAM4S16CA-AN - Cortex-M4 120MHz 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4S16CA-AN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 1024 Kbytes dual-bank embedded Flash and 128 Kbytes SRAM, housed in a 100-pin LQFP Green (AN) package. A microcontroller (MCU) integrates a processor core, memory, and peripherals onto a single chip, sitting at the device level of the embedded-systems hierarchy between discrete logic and full application processors. The SAM4S series belongs to the ARM Cortex-M4 family of 32-bit microcontrollers, which combine general-purpose MCU control capability with DSP instructions and Thumb-2 technology for efficient signal processing. Key features include the Cortex-M4 core with a Memory Protection Unit (MPU), DSP instruction support, dual-bank Flash with ECC, Security Bit and Flash lock protection, plus rich connectivity: EBI/EMI external bus, I2C, IrDA, memory card interface, SPI, SSC, UART/USART, and USB. Peripheral support covers brown-out detect/reset, DMA, POR, PWM, and a watchdog timer, with 79 general-purpose I/O lines. The dual-bank Flash architecture enables safe in-field firmware updates: the device can execute from one bank while erasing or programming the other, reducing boot-loader downtime risk. ECC on Flash improves reliability in electrically noisy industrial environments. The SAM4S series operates from 1.62V to 3.6V and is pin-to-pin compatible with the SAM7S, SAM3N, SAM3S, and SAM4N families, providing a clear migration path from legacy designs. Typical applications include industrial control, consumer products, and PC peripherals, as well as USB-equipped field devices, motor-control systems using PWM outputs, and data-acquisition nodes using the SSC and memory card interfaces. Design considerations: operate within the 1.62V to 3.6V supply range, budget the 79 available I/O against the EBI external memory bus requirements, and plan the dual-bank Flash layout early to take full advantage of ECC and safe update capability. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-09-20.

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ATSAM4S16CA-ANR - Cortex-M4 MCU 120MHz 1MB Flash | Microchip
ATSAM4S16CA-ANR

ATSAM4S16CA-ANR - Cortex-M4 MCU 120MHz 1MB Flash | Microchip

The Microchip Technology ATSAM4S16CA-ANR is a 32-bit ARM Cortex-M4 microcontroller with a maximum operating frequency of 120 MHz, 1 MB (1024 KB) dual-bank embedded Flash with ECC, and 128 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) package. A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, program memory, data memory, and peripherals on one die. Within the power-management hierarchy of embedded systems, general-purpose MCUs like the SAM4S family form the central control layer, executing application firmware while driving communication, sensing, and actuation peripherals. Key features include the Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), dual-bank Flash supporting safe in-application programming, and a Security Bit plus Flash lock for IP protection. According to Microchip, power consumption is 200 uA/MHz, and the supply range of 1.62V to 3.6V enables battery and 3.3V industrial designs. The SAM4S16 architecture pairs the Cortex-M4 with a multi-layer bus matrix, DMA-capable peripherals such as UART, USART, SPI, I2C/TWI, and a 12-bit ADC, sustaining deterministic real-time behavior for control loops while DSP instructions accelerate filtering and math-intensive routines. The parallel input/output (PIO) data-capture mode supports high-throughput digital acquisition. Typical applications include industrial automation controllers, smart energy metering, portable/battery-powered devices, and consumer/POS equipment, where the combination of 120 MHz performance, low power, and rich connectivity fits cost-sensitive designs. Design consideration: the SAM4S series is pin-to-pin compatible with SAM3N, SAM3S, SAM4N, and legacy SAM7S (64-pin versions), so layouts can be upgraded without PCB rework; validate VDDIO levels when migrating from 5V-tolerant legacy parts. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S16CA-AU - Cortex-M4 120MHz 1MB Flash MCU | Microchip
ATSAM4S16CA-AU

ATSAM4S16CA-AU - Cortex-M4 120MHz 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4S16CA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz, with 1 MB (1024 KB) of embedded flash memory and 128 KB of SRAM, housed in a 100-pin LQFP (14 x 14 mm) surface-mount package. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and a rich set of peripherals into one chip, forming the brain of an embedded system. The ATSAM4S16CA-AU belongs to the SAM4S family within the broader hierarchy of ARM-based flash MCUs: Cortex-M4 core -> 32-bit RISC microcontroller -> SAM4S series -> Microchip (formerly Atmel) AT91/SAM portfolio. Key features include an ARM Cortex-M4 core with a 2 Kbyte cache and Memory Protection Unit (MPU), a hardware DSP instruction set, and the Thumb-2 instruction set for high code density. The 120 MHz operating frequency combined with DSP instructions makes it significantly faster than the Cortex-M3-based SAM3S parts it can replace. Peripherals cover EBI/EMI external bus, I2C (TWI), IrDA, MMC/SD, SPI, SSC, and UART/USART serial connectivity, enabling flexible interfacing to displays, sensors, and storage. A major engineering advantage is pin-to-pin compatibility with the SAM4N, SAM3S, SAM3N (48-, 64- and 100-pin versions) and legacy SAM7S (64-pin) families, allowing designers to migrate designs or respond to shortages without PCB respins. The 1.2 V/3.3 V supply options and industrial temperature range suit harsh environments. Typical applications include industrial control and automation, consumer products with human-machine interfaces, metering systems, and IoT sensor nodes that benefit from DSP capability and large 1 MB flash for complex firmware. When designing, plan flash bank usage and take advantage of the parallel input/output (PIO) data capture mode for high-speed data acquisition tasks. This page synthesizes distributor availability data, family cross-references, and practical migration guidance not found in the manufacturer datasheet alone.

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ATSAM4S16CA-AUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4S16CA-AUR

ATSAM4S16CA-AUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4S16CA-AUR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz with 1 MB of embedded flash and 128 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package supplied on tape and reel. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals onto one die, sitting at the lowest level of the embedded-system hierarchy above discrete logic but below application processors. The SAM4S family belongs to Microchip's (formerly Atmel's) SMART ARM-based MCU portfolio and offers pin-to-pin compatibility with SAM4N, SAM3S, SAM3N, and SAM7S devices, enabling easy migration within the portfolio. Key features of the ATSAM4S16CA-AUR include the high-performance Cortex-M4 RISC core with DSP extensions and single-cycle multiply-accumulate, 120 MHz maximum core speed, 1 MB (1M x 8) of flash program memory, and operation from 1.2 V, 1.8 V, 2.5 V, or 3.3 V supply rails. The device integrates fast Flash memory with dual instruction/data access paths, multiple serial communication peripherals, and rich analog and timer resources typical of the SAM4S family. Technically, the SAM4S series implements the ARMv7E-M architecture with hardware FPU-class DSP instructions, multi-layer bus matrix for parallel peripheral access, and a parallel input/output (PIO) data-capture mode. This architecture sustains deterministic real-time behavior at high clock rates while keeping interrupt latency low, making the part well-suited to control-loop intensive designs that also perform digital signal processing. Typical applications include industrial automation and motor control, consumer and portable devices, PC peripherals, and networking or connectivity nodes. The combination of 1 MB flash and 120 MHz throughput supports protocol stacks, graphics-lite HMI, and digital filtering without an external processor. A key design consideration is supply-rail selection: the device supports multiple voltage operating points, so confirm the required 1.2 V/1.8 V/2.5 V/3.3 V domain configuration against the SAM4S datasheet early in the power-tree design, and verify the industrial temperature range (-40C to +85C) of the AUR suffix against your environmental requirements. This page synthesizes distributor pricing, drop-in alternatives within the same 100-LQFP footprint, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S16CA-CFN - 120MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4S16CA-CFN

ATSAM4S16CA-CFN - 120MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4S16CA-CFN is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz with 1024 Kbytes of dual-bank embedded Flash and a 100-ball VFBGA (GREEN, EXT) package. A 32-bit microcontroller (MCU) is a single-chip computing device that integrates a processor core, memory, and peripherals on one die, forming the lowest layer of the embedded-system hierarchy (microcontroller -> embedded processor -> system-on-chip -> semiconductor device). The SAM4S family belongs to Microchip's (formerly Atmel) ARM-based SAM portfolio and executes the Thumb-2 instruction set with DSP instructions and a Memory Protection Unit (MPU), positioning it between entry-level Cortex-M0+/M3 parts and high-performance Cortex-M7 devices. Key features include the 120 MHz Cortex-M4 core with hardware MAC and DSP instructions, 1024 KB dual-bank Flash with ECC, Security Bit and lock bits, and pin-to-pin compatibility with the legacy SAM7S, SAM3N and SAM3S series in the 100-pin footprint. Parallel Input/Output (PIO) data capture mode and a full-speed USB Device port round out the peripheral set. Architecturally, the dual-bank Flash implementation enables safe in-application programming and firmware updates, while the ECC protects stored code against bit corruption. The ARM Cortex-M4 pipeline with single-cycle MAC accelerates digital signal processing such as filtering and FFT-based algorithms common in industrial control. Typical applications include industrial automation control nodes, consumer and industrial HMI/USB peripherals, and data-acquisition systems that leverage the PIO capture mode and DSP capability. Design consideration: the VFBGA package demands controlled-impedance PCB layout and proper ball-map fan-out planning; verify power-domain sequencing per the manufacturer datasheet before first power-up. This page synthesizes distributor pricing from seven sources, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S16CA-CFU - Cortex-M4 120MHz 1MB Flash MCU | Microchip
ATSAM4S16CA-CFU

ATSAM4S16CA-CFU - Cortex-M4 120MHz 1MB Flash MCU | Microchip

The Microchip ATSAM4S16CA-CFU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz with 1 MB of dual-bank embedded Flash and 128 KB of SRAM, housed in a 100-ball VFBGA (7x7 mm) package. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the lowest layer of the embedded-system hierarchy above discrete logic and below application processors. The SAM4S family belongs to Microchip (formerly Atmel) ARM-based flash MCU portfolio, positioned as a mid-range performance line between the entry-level SAM3N/SAM3S and the high-performance SAM E70/SAMS70 families. Key features include the Cortex-M4 core with a 2 KB cache, Memory Protection Unit (MPU), DSP instructions, and the Thumb-2 instruction set; 1024 KB of dual-bank embedded Flash with ECC, Security Bit, and lock regions; and 128 KB of SRAM. Power consumption is a low 200 uA/MHz, and the supply range of 1.62 V to 3.6 V suits battery and industrial 3.3 V designs. Architecturally, the device builds on the high-performance 32-bit Cortex-M4 core, and the DSP extension accelerates filtering and control-loop math found in motor control and digital power. Dual-bank Flash enables safe in-application programming with bank swapping for firmware update schemes. Typical applications include industrial automation nodes, motor control, consumer and portable devices, and embedded systems migrating from legacy SAM7S parts - the ATSAM4S16CA-CFU is pin-to-pin compatible with SAM3N, SAM3S (64- and 100-pin versions), and SAM7S legacy devices. Design consideration: the VFBGA ball-grid package requires controlled-impedance, fine-pitch PCB fabrication; verify your assembly capability before selecting the CA (BGA) variant over the AU (LQFP) variant. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S16CA-CFUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4S16CA-CFUR

ATSAM4S16CA-CFUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4S16CA-CFUR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz, with 1 MB (1M x 8) dual-bank embedded Flash and 128 KB SRAM, housed in a 100-ball VFBGA (7x7 mm) package for industrial temperature ranges. A 32-bit flash microcontroller (MCU) is a single-chip computing device that integrates a processor core, non-volatile program memory, SRAM, and a rich set of peripherals such as UART, SPI, I2C, ADC, timers, and DMA on one die. Within the embedded system hierarchy, MCUs sit at the device level of the microcontroller -> embedded processor -> system-on-chip taxonomy, and the SAM4S family belongs to Microchip (formerly Atmel) SMART ARM-based MCU portfolio. Key differentiating features include the ARM Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), 1024 Kbytes of dual-bank embedded Flash with ECC, Security Bit, and lock capability, and pin-to-pin compatibility across the SAM7S, SAM3N, SAM3S, SAM4N, and SAM4S legacy families (48-, 64- and 100-pin versions). The dual-bank Flash architecture enables safe in-application firmware updates, since code can execute from one bank while the other is erased or programmed. On the technical side, the Cortex-M4 pipeline with DSP extensions accelerates control loops, filtering, and FFT-type math without an external FPU, while the MPU supports functional-safety-minded software partitioning. The 1.2 V core operation with on-chip regulators allows operation from a single 3.3 V supply. Typical applications include industrial automation nodes, consumer and industrial HMI/controllers, data logging, motor control front-ends, and IoT gateways where 120 MHz headroom and 1 MB Flash remove common capacity bottlenecks. A key design consideration: the 100-VFBGA (7x7) footprint demands controlled-impedance, via-in-pad BGA PCB layout and reflow assembly capability - it is not hand-solderable, so plan production assembly accordingly. This page synthesizes distributor pricing, drop-in same-footprint alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S16CA-CU - 120MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4S16CA-CU

ATSAM4S16CA-CU - 120MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4S16CA-CU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz with 1 MB (1M x 8) of dual-bank embedded Flash and a 100-ball TFBGA (9x9 mm) package. A microcontroller (MCU) is a single-chip embedded processor that integrates a CPU core, memory, and peripherals on one die, sitting at the heart of the embedded systems hierarchy: MCU -> embedded processor -> system-on-chip -> semiconductor device. The SAM4S family is Microchip's (formerly Atmel) ARM-based Flash MCU line for mid-range embedded control. Key features include the ARM Cortex-M4 core with a 2 Kbytes cache, DSP instructions and the Thumb-2 instruction set, a Memory Protection Unit (MPU), and 1024 Kbytes of dual-bank embedded Flash with ECC, Security Bit and Lock support. Dual-bank Flash enables safe in-application programming: firmware can execute from one bank while the other is erased or written. The device is pin-to-pin compatible with Microchip SAM3N, SAM3S (64- and 100-pin versions), SAM4N and legacy SAM7S products, allowing easy migration within the portfolio when more or less performance or memory is required. This migration path substantially de-risks PCB redesigns across product generations. Typical applications include industrial control and automation nodes, consumer devices, and metering or data-logging equipment where 120 MHz DSP capability, 1 MB of Flash, and BGA space efficiency justify the footprint. Design consideration: TFBGA packages require controlled-impedance PCB fabrication and X-ray or optical inspection capability; confirm your assembly partner supports 0.8 mm pitch BGA reflow before committing to this package. This page synthesizes distributor pricing, drop-in alternatives within the SAM4S/SAM3S families, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S16CB-CFN - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4S16CB-CFN

ATSAM4S16CB-CFN - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4S16CB-CFN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 1 MB (1M x 8) dual-bank embedded Flash, 128 KB SRAM, and a 100-ball VFBGA (7x7 mm) package in the SAM4S series. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip, forming the lowest tier of the embedded processing hierarchy (MCU -> embedded processor -> application processor). The ARM Cortex-M4 is a 32-bit RISC core optimized for deterministic real-time control, and when equipped with DSP instructions and a Memory Protection Unit (MPU) it serves both control and signal-processing roles in embedded systems. Key features of the ATSAM4S16CB-CFN include the 120 MHz Cortex-M4 core with Thumb-2 instruction set and hardware DSP instructions, 1024 KB dual-bank Flash with ECC, Security Bit and lock regions for code protection, and pin-to-pin compatibility with the Microchip SAM7S, SAM3N and SAM3S MCU families, which protects software and PCB investment across generations. Technically, the dual-bank Flash architecture supports safe in-application programming and firmware update strategies, while the MPU enables privileged/unprivileged software partitioning for robust designs. The Cortex-M4 DSP extension accelerates filtering and transform math such as FFT and FIR operations that are common in motor control and sensing applications. Typical applications include industrial automation and motor control, consumer and portable devices, and embedded systems that need an upgrade path from SAM3S/SAM7S designs where the pin-compatible footprint allows a drop-in performance migration. Design consideration: verify that the board power rails and BGA ball map support the operating temperature class of the -CFN green package, and budget Flash bank allocation before enabling ECC-protected dual-bank operation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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

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

The Microchip Technology ATSAM4S2AA-AU is a 32-bit ARM Cortex-M4 microcontroller with a maximum operating frequency of 120 MHz, 128 KB embedded Flash and 64 KB SRAM, housed in a 48-pin LQFP (7x7 mm) package. An MCU (microcontroller unit) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, sitting at the heart of embedded systems. Within the hierarchy of computing devices, a microcontroller occupies the space between simple 8-bit controllers and full application processors, and the SAM4S family belongs to Microchip's (formerly Atmel) ARM-based 32-bit SAM portfolio, built around the ARM Cortex-M4 core with Thumb-2 instruction set, DSP instructions, and a Memory Protection Unit (MPU). Key features of the ATSAM4S2AA include the 120 MHz Cortex-M4 with hardware DSP instructions for signal-processing workloads, 128 KB of embedded Flash with ECC, Security Bit, and Lock Bits for code protection, and 64 KB of SRAM. The supply range spans 1.62V to 3.6V, and typical power consumption is as low as 180 uA in the manufacturer's published low-power operating modes. Technical depth comes from the SAM4S peripheral set, which historically includes high-speed USB Device, multiple USART/UART channels, SPI, TWI (I2C), PWM channels, a 12-bit ADC, and a real-time timer/clock ecosystem, allowing the device to drive industrial and consumer designs from a single chip. The Cortex-M4 core provides single-cycle MAC and hardware divide, useful for control loops and digital filtering. Typical applications include industrial control and automation nodes, consumer devices, and embedded systems that previously used the pin-compatible SAM3S/SAM3N/SAM7S families and want a drop-in performance upgrade. A key design consideration is supply voltage: the 1.62V to 3.6V operating range means 5V-tolerant I/O must not be assumed; use level shifting for legacy 5V signals. The LQFP-48 (7x7) footprint also offers pin-to-pin compatibility across the SAM4S/SAM3S/SAM3N/SAM7S families, simplifying PCB reuse. This page synthesizes distributor pricing, pin-compatible family alternatives, and practical design guidance not found in the manufacturer datasheet alone.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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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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