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ATSAM4LS4BA-MUR - 48MHz Cortex-M4 256KB MCU | Microchip
ATSAM4LS4BA-MUR

ATSAM4LS4BA-MUR - 48MHz Cortex-M4 256KB MCU | Microchip

The Microchip Technology ATSAM4LS4BA-MUR is a 32-bit ARM Cortex-M4 flash microcontroller in the SAM4L series, running at up to 48 MHz with 256 KB (256K x 8) of embedded Flash, 32 KB of SRAM, and a 1.68V to 3.6V supply range, housed in a 64-pin QFN (9x9 mm) package with exposed pad. A 32-bit microcontroller (MCU) is an integrated circuit that combines a processor core, memory, and peripherals on a single chip, sitting within the broader hierarchy of embedded processors: microcontroller -> ARM Cortex-M core family -> system-on-chip for embedded control. The SAM4L family is Atmel (now Microchip) Flash MCUs based on the high-performance ARM Cortex-M4 RISC processor, which includes a hardware floating-point unit and DSP instructions. Key features include the 48 MHz Cortex-M4 core with FPU, 256 KB Flash and 32 KB SRAM, and low-power operation suited to battery-powered designs. The industrial temperature grade and Tape & Reel (T/R) packaging support automated high-volume assembly. The SAM4L architecture integrates a multi-layer bus matrix, flexible peripheral event system, and power-management controller with multiple sleep modes, allowing peripherals to operate while the CPU sleeps to minimize energy per task in low-power applications. Typical applications include battery-powered portable instruments, industrial sensing and control nodes, and consumer devices requiring a balance of processing performance (hardware floating point at 48 MHz) and low standby power. Design consideration: operate the device within the 1.68V to 3.6V supply window (nominal 3.3V) and confirm GPIO assignments against the manufacturer datasheet before layout, as QFN packages with exposed pads require careful thermal and ground pad soldering. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4LS4BA-UUR - 48MHz Cortex-M4 MCU 256KB Flash | Microchip
ATSAM4LS4BA-UUR

ATSAM4LS4BA-UUR - 48MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip ATSAM4LS4BA-UUR is a 32-bit ARM Cortex-M4 flash microcontroller from the SAM4L series, running at up to 48 MHz with 256KB (256K x 8) flash memory, 32KB SRAM, and a supply range of 1.62V to 3.6V, housed in a 64-ball WLCSP package measuring 4.31 x 4.43 mm and supplied in tape and reel. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest layer of the embedded systems hierarchy: MCU -> embedded processor -> system-on-chip -> semiconductor device. The SAM4L family belongs to Atmel (now Microchip Technology) ARM-based flash microcontrollers, positioned for low-power embedded control. Key features include the high-performance 32-bit ARM Cortex-M4 RISC processor core, 10-bit and 12-bit ADC options for analog sensing, and operation across multiple nominal supply rails of 1.8V, 2V, 2.3V, and 3.3V. The extremely compact 64-WLCSP (4.31 x 4.43 mm) ball grid array package makes the device attractive for space-constrained portable electronics where board area is the dominant constraint. Technically, the SAM4L series is a member of a family of flash microcontrollers based on the high-performance 32-bit ARM Cortex-M4 RISC processor. The Cortex-M4 core brings hardware DSP instructions and single-cycle MAC capability, allowing filtering and control-loop math to execute efficiently at the modest 48 MHz clock while preserving the SAM4L series low-power design philosophy. Typical applications include battery-powered portable instruments, wearable and sensor-node designs, industrial sensing front-ends using the 10/12-bit ADCs, and compact embedded controllers where a 32-bit ARM ecosystem with 256KB of on-chip flash is required in a minimal footprint. A key design consideration is the WLCSP package itself: wafer-level chip-scale balls demand tight PCB pad accuracy and reflow control, and the underside ball array requires careful via-in-pad or escape-routing strategy for signal access. This page synthesizes distributor pricing, drop-in family alternatives, comparison data, and practical WLCSP layout guidance not consolidated in the manufacturer datasheet.

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ATSAM4LS4CA-AUR - 32-bit ARM Cortex-M4 48MHz MCU | Microchip
ATSAM4LS4CA-AUR

ATSAM4LS4CA-AUR - 32-bit ARM Cortex-M4 48MHz MCU | Microchip

The Microchip Technology ATSAM4LS4CA-AUR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 256 KB of embedded flash memory and 32 KB of SRAM, housed in a 100-pin TQFP (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 onto one chip, forming the complete embedded control hierarchy: processor core -> MCU -> embedded system. The ATSAM4LS4CA-AUR belongs to the Atmel/Microchip SAM4L family, built on the ARM Cortex-M4 RISC architecture with Thumb-2 instruction set, positioning it in the mainstream 32-bit embedded controller class between simple Cortex-M0 parts and high-performance Cortex-M7 devices. Key features include the high-efficiency Cortex-M4 core with DSP-friendly single-cycle multiply instructions, 256 KB (256K x 8) of flash program memory, 32K x 8 SRAM, and an ultra-low-power design that makes the SAM4L series a benchmark for energy-sensitive applications. On-chip analog includes both 10-bit and 12-bit ADC capability per distributor data, and security is supported by a hardware AES crypto module, as noted in Mouser listing attributes (CRYPTO). Technically, the SAM4L implements a multilayer bus matrix, sleepwalking peripheral operation, and multiple low-power sleep modes so that RAM retention and peripheral wake-up can be managed independently of the CPU clock. The industrial temperature grade (-40C to +85C) and 1.68 V to 3.6 V single-supply operation allow direct battery and 3.3 V rail designs. Typical applications include portable battery-powered instruments, industrial sensors and actuators, consumer appliances, and low-power IoT nodes where the 48 MHz Cortex-M4 core processes control loops and sensor data with crypto-secured communication links. When designing with this device, budget the flash endurance and use the on-chip brown-out and clock-fail detection features; supply decoupling on all VDD/VDDIO pairs and a clean 3.3 V rail preserve ADC accuracy. This page adds distributor pricing tiers, drop-in family alternatives, design notes, and comparison data synthesized from DigiKey, Mouser, Octopart, and LCSC listings - information not consolidated in the manufacturer datasheet.

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ATSAM4LS4CA-CFUR - 48MHz Cortex-M4 MCU 256KB Flash | Microchip
ATSAM4LS4CA-CFUR

ATSAM4LS4CA-CFUR - 48MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4LS4CA-CFUR (Atmel SAM4L series) is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 256KB embedded Flash and 3.3V operation, housed in a 100-ball VFBGA package measuring 7x7 mm and supplied in tape-and-reel packing. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, sitting at the device level of the embedded-systems hierarchy (MCU -> embedded processor -> semiconductor IC). The SAM4L family is based on the high-performance 32-bit ARM Cortex-M4 RISC processor, providing DSP-oriented instructions and efficient interrupt handling for low-power embedded designs. Key features of the ATSAM4LS4CA-CFUR include the ARM Cortex-M4 core at 48 MHz for computationally capable but energy-conscious applications, 256KB (256K x 8) of on-chip Flash for code storage, and a 100-VFBGA (7x7 mm) ball grid array footprint that saves board area in space-constrained products. The part is specified for industrial temperature range operation and is available as a Green (RoHS-oriented) package with MSL rating A per distributor listings. From a technical perspective, the SAM4L series emphasizes low active and sleep-mode power consumption while retaining the Cortex-M4 integer DSP capability, making it distinct from Cortex-M3-based parts at similar clock speeds. The 100-ball VFBGA requires precise PCB land-pattern design and reflow assembly, but yields the smallest possible footprint for a 100-pin SAM4L device. Typical applications include portable and battery-powered instruments, industrial sensing nodes, consumer appliances, and low-power IoT end points where a 48 MHz Cortex-M4 with 256KB Flash provides adequate performance headroom. When designing with this device, plan power-delivery decoupling for the BGA ballout and verify Flash capacity against application growth, since the 256KB density sits mid-range in the SAM4L family. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet. Pricing references LCSC reference pricing of $2.6888 as of 2026-09-20.

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ATSAM4LS8AA-MU - ARM Cortex-M4 MCU 48MHz 512KB Flash | Microchip
ATSAM4LS8AA-MU

ATSAM4LS8AA-MU - ARM Cortex-M4 MCU 48MHz 512KB Flash | Microchip

The Microchip Technology ATSAM4LS8AA-MU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 512 KB of embedded Flash and 64 KB of SRAM, housed in a 48-pin QFN (7x7 mm) surface-mount package. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest layer of the embedded system hierarchy: MCU -> microcontroller -> embedded processor -> system-on-chip. The SAM4L family sits within Microchip's ATSAM ARM-based flash MCU portfolio and targets low-power, battery-operated and energy-harvesting designs. Key features include industry-leading active-mode consumption of 90 uA/MHz, sleep mode current of just 1.5 uA, and wake-up times down to 1.5 us, which together rank among the lowest power figures of any Cortex-M4 device. The integrated USB device peripheral, peripheral event system, and the proprietary SleepWalking technology allow peripherals to operate autonomously while the CPU core and clock domains remain powered down, dramatically extending battery life. Architecturally, the SAM4L combines the ARM Cortex-M4 core with Microchip's picoPower techniques, a multi-layer bus matrix, and a flexible peripheral set. The peripheral event system routes inter-peripheral signals without CPU intervention, reducing latency and active power. Embedded Flash supports the code base while SRAM retains data through deep-sleep states, supporting rapid context restoration on wake-up. Typical applications include battery-powered sensor nodes and IoT end devices, portable medical and fitness monitors, and low-power industrial control and metering products where every microamp of average current directly extends field life. For design, take advantage of the SleepWalking framework early in the software architecture: assign wake-up sources and event routes before finalizing the schematic, and decouple the VDDCORE and VDDIO domains with low-ESR ceramic capacitors placed close to the QFN pads. This page synthesizes distributor availability data, same-family drop-in alternatives, and practical low-power design guidance not found in the manufacturer's product brief.

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ATSAM4LS8BA-AU - Cortex-M4 48MHz 512KB MCU | Microchip
ATSAM4LS8BA-AU

ATSAM4LS8BA-AU - Cortex-M4 48MHz 512KB MCU | Microchip

The Microchip Technology ATSAM4LS8BA-AU is a 32-bit ARM Cortex-M4 flash microcontroller delivering 48 MHz performance, 512KB of embedded flash, and 64KB of SRAM in a 64-pin TQFP (10x10 mm) surface-mount package. It belongs to the SAM4L family, which Microchip (formerly Atmel) positions as the lowest-power Cortex-M4 MCU line, with active-mode consumption of 90 uA/MHz, sleep-mode current of 1.5 uA, and wake-up times down to 1.5 us. 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 ATSAM4LS8BA-AU sits at: ARM Cortex-M4 MCU -> 32-bit microcontroller -> SAM4L family -> embedded processing -> semiconductor device. MCUs are the core building blocks of embedded systems, controlling sensors, actuators, and communication interfaces in everything from consumer gadgets to industrial equipment. Key differentiating features include the Cortex-M4 core with DSP instructions, an integrated USB 2.0 device controller, a Peripheral Event System that routes signals between peripherals without CPU intervention, and the proprietary SleepWalking technology that lets peripherals operate autonomously while the core sleeps. These attributes make it exceptionally well suited to battery-powered and energy-harvesting designs that still require substantial processing throughput. The SAM4L architecture also integrates a flash accelerator for zero-wait-state execution at full speed, multiple low-power sleep modes, an AES/DES cryptographic option on sibling parts, and analog peripherals including a 12-bit ADC and DAC. The wide 1.62V to 3.6V operating supply range supports direct operation from single-cell lithium and 3.3V industrial rails. Typical applications include portable medical instruments, battery-powered metering, IoT sensor nodes, consumer appliance control, and industrial monitoring where long battery life is a design requirement. The 48 MHz Cortex-M4 with hardware divide and single-cycle MAC handles digital filtering and control loops efficiently. A key design consideration is power budgeting: exploit the SleepWalking peripheral system and fast wake-up to remain in the deepest possible sleep mode between events, since active current dominates the energy profile in duty-cycled systems. This page synthesizes distributor pricing from multiple sources, drop-in family alternatives, and practical design guidance not found in the manufacturer datasheet alone. Pricing references are as of 2026-09-20.

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ATSAM4LS8BA-AUR - 512KB Cortex-M4 48MHz MCU | Microchip
ATSAM4LS8BA-AUR

ATSAM4LS8BA-AUR - 512KB Cortex-M4 48MHz MCU | Microchip

The Microchip Technology ATSAM4LS8BA-AUR is a 32-bit ARM Cortex-M4 flash microcontroller running at 48 MHz with 512 KB of embedded flash memory, housed in a 64-pin TQFP (10x10 mm) surface-mount package with exposed pad and supplied in tape-and-reel format. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest tier of the embedded processing hierarchy (MCU -> embedded processor -> microprocessor -> SoC). The SAM4L family belongs to Microchip's (formerly Atmel) ARM-based flash MCU portfolio, built on the 32-bit ARM Cortex-M4 RISC architecture that adds DSP instructions and single-cycle MAC for math-intensive embedded workloads. The defining strength of the ATSAM4LS8BA-AUR is ultra-low power consumption: Microchip specifies the lowest active-mode current in its class at 90 uA/MHz, sleep-mode current of 1.5 uA, and wake-up time down to 1.5 us - the shortest wake-up among Cortex-M4 devices at the time of release. A 512 KB single-cycle flash array, integrated USB device controller, Peripheral Event System (direct peripheral-to-peripheral signaling without CPU intervention), and Sleepwalking peripherals (peripherals that operate while the CPU sleeps) let battery-powered systems stay in sleep states far longer than conventional MCUs. Architecturally, the Cortex-M4 core is complemented by the SAM4L bus matrix, multi-source interrupt controller, and a rich analog/mixed-signal peripheral set operating from a 3.3 V supply. The Peripheral Event System and Sleepwalking capability offload periodic tasks - ADC sampling, comparator monitoring, timed wakeups - from the core entirely. Typical applications include battery-powered sensor nodes and IoT devices, portable medical instruments, low-power industrial sensing, and consumer devices requiring USB connectivity with long battery life. Design tip: exploit the Sleepwalking peripherals to keep the Cortex-M4 in a low-power sleep mode as much as possible; wake-up latency of 1.5 us means even event-driven designs do not need to trade responsiveness for power savings. This page synthesizes verified distributor listings, drop-in alternatives, and low-power design guidance not consolidated in the manufacturer datasheet.

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ATSAM4LS8BA-MU - 48MHz Cortex-M4 512KB MCU | Microchip
ATSAM4LS8BA-MU

ATSAM4LS8BA-MU - 48MHz Cortex-M4 512KB MCU | Microchip

The Microchip Technology ATSAM4LS8BA-MU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 512KB of embedded Flash memory, ultra-low 90 uA/MHz active-mode current, and a 64-pin QFN (9x9 mm) exposed-pad package. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory (Flash for code and SRAM for data), and a rich set of peripherals (timers, serial interfaces, ADCs) on one die. Within the power-management hierarchy, MCUs like the SAM4L sit at the lowest power tier of 32-bit embedded processing, below application processors, and are optimized for battery-powered and energy-harvesting systems where every microamp matters. The ATSAM4LS8BA-MU differentiates itself with the lowest power in its class: 90 uA/MHz in active mode, 1.5 uA in sleep mode, and a wake-up time as short as 1.5 us, which Microchip reports as the fastest in any Cortex-M4 device. It integrates a USB device controller, a peripheral event system that lets peripherals communicate without CPU intervention, and the Sleepwalking feature that allows peripherals to operate autonomously while the core sleeps. Architecturally, the device is based on the high-performance 32-bit ARM Cortex-M4 RISC processor with a 3-stage pipeline and single-cycle MAC/DSP instructions. The SAM4L family adds a picoPower technology portfolio: multiple sleep modes, a reduced core voltage of 3.3V operation, and peripheral gating. The embedded Flash with 512KB (512K x 8) density supports field firmware updates, and the exposed-pad HVQCCN QFN package provides excellent thermal and grounding performance for compact designs. Typical applications include battery-powered sensor nodes, smart meters, portable medical monitors, wearable devices, industrial IoT endpoints, and low-power USB accessories where fast wake-up and long battery life dominate the design requirements. Designers should budget the lowest-power sleep mode against wake-up latency: the 1.5 us wake-up enables aggressive duty cycling, but peripheral Sleepwalking configurations require careful clock and event-system planning to actually realize the datasheet-level current figures. This page synthesizes distributor pricing, drop-in SAM4L family alternatives, pinout guidance, and practical design notes not found in a single manufacturer datasheet, saving engineers cross-referencing time.

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ATSAM4LS8BA-UUR - Cortex-M4 48MHz 512KB Flash WLCSP-64 | Microchip
ATSAM4LS8BA-UUR

ATSAM4LS8BA-UUR - Cortex-M4 48MHz 512KB Flash WLCSP-64 | Microchip

The Microchip Technology ATSAM4LS8BA-UUR is a 32-bit ARM Cortex-M4 flash microcontroller running at 48 MHz with 512KB embedded Flash, housed in a 64-ball WLCSP (wafer-level chip-scale) package measuring approximately 4.31 x 4.43 mm. A microcontroller (MCU) integrates a processor core, memory, and peripherals on a single chip, sitting at the top of the hierarchy: MCU -> embedded processor -> semiconductor device. The SAM4L family belongs to Microchip's (formerly Atmel's) ARM-based flash MCU portfolio, targeting ultra-low-power embedded systems that still require 32-bit DSP-class performance from the Cortex-M4 core. Key features include the lowest active-mode consumption in its class (90 uA/MHz per the manufacturer product page), 1.5 uA sleep-mode current, and wake-up times down to 1.5 us - the shortest among Cortex-M4 devices at introduction. The chip integrates a USB device controller, a peripheral event system that lets peripherals communicate without CPU intervention, and the SleepWalking feature that allows peripherals to operate while the CPU core is asleep, dramatically reducing average power in duty-cycled systems. Technically, the SAM4L uses the ARM Cortex-M4 RISC architecture with single-cycle multiply and hardware divide, a multi-layer bus matrix, and flexible supply operation around 1.8V to 3.3V (FindIC lists 1.8V/2V/2.3V/3.3V nominal rails). The 512KB Flash supports in-system programming, and industrial temperature grade operation (-40C to +85C) suits harsh environments. Typical applications include battery-powered wearable and portable devices, sensor nodes and IoT endpoints, low-power data loggers, and space-constrained medical monitoring products where the 4.31 x 4.43 mm WLCSP-64 footprint and low sleep current are decisive. Design consideration: WLCSP packages require precise PCB land-pattern design and solder-mask-defined pads; verify the manufacturer's ball-map document before layout and budget rework difficulty accordingly. This page adds value beyond the datasheet by consolidating verified distributor pricing, drop-in alternative analysis within the SAM4L family, design notes, and AEO-optimized answers to common engineering questions.

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ATSAM4LS8CA-AU - 48MHz Cortex-M4 512KB Flash MCU | Microchip
ATSAM4LS8CA-AU

ATSAM4LS8CA-AU - 48MHz Cortex-M4 512KB Flash MCU | Microchip

The Microchip Technology ATSAM4LS8CA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz, with 512 KB of FLASH program memory and 64 KB of SRAM, housed in a 100-pin TQFP (14 x 14 mm) surface-mount package. The device integrates Microchip (Atmel) picoPower technology for ultra-low power consumption and supports operating voltages from 1.68 V to 3.6 V across an industrial temperature range of -40 °C to +85 °C. A microcontroller (MCU) is a single-chip embedded computer that combines a processor core, volatile and non-volatile memory, and a rich peripheral set on one silicon die. Within the embedded taxonomy, MCUs sit between simple 8-bit controllers (such as the ATmega family) and high-end application processors, with 32-bit ARM Cortex-M devices like the SAM4L occupying the mainstream performance-per-watt tier. The SAM4L family is specifically engineered around picoPower logic, multiple low-power modes, and a flexible clock tree to minimize active and standby current in battery-driven products. Key features of the ATSAM4LS8CA-AU include the Cortex-M4 core with single-cycle MAC and DSP extensions, 512 KB of embedded flash for application and library code, 64 KB of SRAM for data buffers and stack frames, and a peripheral event system that allows on-chip peripherals to interact without CPU intervention. The 100-pin TQFP (14 x 14 mm) package exposes the full peripheral set, including multiple USART, SPI, TWI, ADC, and timer channels needed for sensor fusion and motor control. Technically, the SAM4L architecture combines a high-performance 32-bit RISC core with hardware acceleration blocks optimized for low energy operation. The Cortex-M4 core executes from flash with deterministic interrupt latency, while the picoPower sleep modes, programmable clock dividers, and a peripheral event controller let applications stay in deep sleep for long stretches, waking only on peripheral triggers. This balance suits applications where average current draw, not peak compute, dominates the battery life equation. Typical applications include portable and battery-powered instrumentation, industrial sensor nodes, low-power wireless gateways, building automation controllers, and consumer human-interface products where a 48 MHz Cortex-M4 with generous 512 KB flash provides comfortable headroom for protocol stacks and graphics. The wide operating voltage range also makes the part attractive for energy-harvesting and 3.3 V system designs. Designers should budget SRAM carefully: 64 KB of SRAM is the family-variant ceiling, so buffers for communication stacks and RTOS use must be sized accordingly. Clock configuration directly affects dynamic current, so the programmable clock dividers and sleep modes should be leveraged in firmware. The 100-pin TQFP package requires standard JEDEC reflow profiles and a 4-layer PCB for clean signal routing. This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing, drop-in same-family alternatives, and design considerations, organized in a form factor optimized for engineering decisions.

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ATSAM4LS8CA-CFU - 32-bit 48MHz Cortex-M4 MCU 512KB | Microchip
ATSAM4LS8CA-CFU

ATSAM4LS8CA-CFU - 32-bit 48MHz Cortex-M4 MCU 512KB | Microchip

The Microchip Technology (Atmel) ATSAM4LS8CA-CFU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 512KB of embedded flash and 64KB SRAM, housed in a 100-ball VFBGA (7x7 mm) package operating from a 3.3V supply. An ARM Cortex-M4 microcontroller is a 32-bit RISC processor-based MCU that combines the energy efficiency required by battery-powered systems with DSP-oriented instruction capability and single-cycle MAC. In the system hierarchy, the ATSAM4LS8CA-CFU sits within Microchip's SAM4L family of Cortex-M4 flash MCUs, which belongs to the broader ARM 32-bit MCU class and the general microcontroller (embedded processor) category. Key features include the 512KB (512K x 8) flash memory for program storage, a 48 MHz maximum CPU clock, and the ultra-low-power characteristics of the SAM4L series, which are designed for low active and sleep currents. The SAM4L series integrates flexible peripheral sets including serial communication interfaces (USART, SPI, TWI) and analog peripherals typical of the family, allowing a single MCU to replace multiple discrete interface and sensing ICs in compact designs. The ATSAM4LS8CA-CFU operates from a single 3.3V supply per the verified specifications. The VFBGA (Very Fine-Pitch Ball Grid Array) 7x7 mm, 100-ball format delivers a very small footprint, making it attractive for space-constrained boards where a TQFP-100 would be too large. BGA packages offer short interconnects that reduce loop inductance and improve signal integrity, but require controlled reflow assembly and inspection equipment. Typical applications include battery-powered industrial sensors, low-power IoT end nodes, portable instrumentation, and consumer devices requiring a 32-bit MCU with generous flash in a compact footprint. The 48 MHz Cortex-M4 core with hardware DSP instructions handles control loops and light signal processing without an external processor. When designing with the VFBGA package, plan the PCB for reflow soldering, controlled-impedance decoupling under the ball field, and consider X-ray inspection capability. Note that flash memory size within the SAM4L family scales the suffix (L2/L4/L8), enabling downward migration on compatible footprints. This page synthesizes distributor pricing (LCSC from $3.2958 as of 2026-09-20), availability across 7 distributors via Octopart, and drop-in family alternatives not found in the manufacturer datasheet.

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ATSAM4N16BA-AUR - 100MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4N16BA-AUR

ATSAM4N16BA-AUR - 100MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16BA-AUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz, with 1 MB of embedded Flash, 80 KB of SRAM, and 8 KB of ROM containing an embedded bootloader, housed in a 64-pin LQFP (10x10 mm) package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, communication interfaces, and analog converters. The ARM Cortex-M4 is a 32-bit RISC processor core widely used in embedded systems; the SAM4N family sits within Microchip's (formerly Atmel) SMART ARM-based MCU portfolio, positioned below the SAM4S as a lower-BOM-cost migration path while remaining pin-to-pin compatible with SAM3N, SAM3S, SAM4S (64/100-pin versions) and SAM7S legacy 64-pin products. Key features of the ATSAM4N16BA include the Cortex-M4 core with DSP instructions, Thumb-2 instruction set, and a Memory Protection Unit (MPU), enabling efficient signal processing in a low-cost general-purpose MCU. The 1 MB Flash supports large application code, while 80 KB of SRAM provides working memory for buffers and stacks. The device operates from a 1.62 V to 3.6 V single supply at 2.5 V or 3.3 V, suiting battery-powered designs. The -AUR suffix denotes industrial temperature range (-40C to +85C), green/RoHS package, and tape-and-reel packing for automated assembly. Technically, the SAM4N implements the ARMv7E-M architecture with Harvard bus structure, and the DSP extension accelerates multiply-accumulate operations used in digital filtering and control loops. The embedded Flash executes at full core speed with pre-fetch buffering, and the MPU supports functional-safety-oriented software partitioning. Typical applications include industrial control and automation nodes, consumer and building appliances, metering front ends, and battery-powered portable instruments that need Cortex-M4 arithmetic performance without the cost of the SAM4S peripheral set. When designing with this device, remember it is a cost-optimized family: verify that the specific peripheral mix (for example USB, which SAM4N omits relative to SAM4S) meets system requirements before committing the footprint, and exploit pin compatibility for risk-free family migration. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N16BA-MU - 100MHz Cortex-M4 MCU, 1MB Flash | Microchip
ATSAM4N16BA-MU

ATSAM4N16BA-MU - 100MHz Cortex-M4 MCU, 1MB Flash | Microchip

The Microchip Technology ATSAM4N16BA-MU is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz with 1 MB (1024 KB) embedded Flash and 80 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 peripherals such as timers, serial interfaces, and analog converters. Within the power-management hierarchy of embedded systems, MCUs sit at the application-control layer, executing firmware that coordinates sensors, actuators, and communication. The SAM4N family belongs to Microchip (formerly Atmel) ARM-based SAM product line, positioned as a cost-reduced migration path from the SAM4S series. Key features of the ATSAM4N16BA include the ARM Cortex-M4 core with DSP instructions and the Thumb-2 instruction set, a Memory Protection Unit (MPU), and industrial temperature operation from a 1.62 V to 3.6 V supply. The device is specified as a GREEN, MRL A package for industrial applications per distributor listings. Architecturally, the Cortex-M4 core executes Thumb-2 code with hardware DSP extensions, and the MPU supports functional-safety-oriented memory partitioning. The 1 MB single-cycle Flash array and 80 KB SRAM provide headroom for protocol stacks and data logging without external memory. Supply operation at 2.5 V or 3.3 V rails simplifies system power design. Typical applications include industrial automation nodes, consumer and building-control systems, and cost-sensitive control panels where the SAM4N offers SAM4S-class performance at a reduced bill-of-materials cost. Pin-to-pin compatibility with SAM3N, SAM3S, SAM4S, and SAM7S devices enables board reuse across performance tiers. When designing, budget Flash margin for over-the-air or field updates, and verify peripheral-set differences against the SAM4S before direct code migration, since SAM4N omits some SAM4S peripherals as part of its cost reduction. This page synthesizes verified distributor pricing, pin-compatible alternatives across the Microchip SAM portfolio, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N16BA-MUR - 100MHz Cortex-M4, 1MB Flash MCU | Microchip
ATSAM4N16BA-MUR

ATSAM4N16BA-MUR - 100MHz Cortex-M4, 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16BA-MUR is a 32-bit ARM Cortex-M4 microcontroller running at 100 MHz with 1 MB (1024 KB) embedded Flash and 80 KB SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed pad on tape and reel. Operating from 1.62V to 3.6V, it integrates a Memory Protection Unit (MPU), DSP instructions, and the Thumb-2 instruction set. A microcontroller (MCU) is a single-chip computer combining a processor core, memory, and peripherals on one die; within the power/performance hierarchy, the SAM4N sits above Cortex-M0+ families such as SAM3N and below the high-throughput SAM4E/S series, making it a general-purpose industrial MCU for cost-sensitive 32-bit designs. Key features include the 100 MHz Cortex-M4 core with hardware DSP instructions for efficient signal processing, 1 MB of zero-wait-state flash for large code images, pin-to-pin compatibility with the SAM3N, SAM3S, SAM4S (64/100-pin) and SAM7S legacy 64-pin products, and an industrial temperature rating of -40C to +85C. The green, RoHS-compliant QFN package supports lead-free reflow assembly. Architecturally, the SAM4N employs an ARMv7E-M Cortex-M4 core with a nested vectored interrupt controller (NVIC) and MPU for functional robustness. Analog capability includes 10-bit ADC peripherals, while serial connectivity covers UART, SPI, I2C/TWI interfaces typical of the SAM4N family. Typical applications include industrial control and automation nodes, consumer appliance interfaces, and building/lighting control where 1 MB of flash enables OTA-updatable firmware without external memory. Design consideration: supply the part at 3.3V for maximum peripheral performance, and verify the 64-pin QFN land pattern against the exposed-pad footprint for reliable ground return. This page synthesizes distributor pricing, drop-in cross-references within the SAM family, and practical sourcing data not found in the manufacturer datasheet.

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ATSAM4N16CA-AU - 100MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4N16CA-AU

ATSAM4N16CA-AU - 100MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16CA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 100 MHz with 1 MB (1024 KB) of embedded flash memory and 80 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) package. A microcontroller unit (MCU) integrates a processor core, program memory, data memory, and peripherals on a single silicon die, sitting at the heart of the embedded systems hierarchy: MCU -> embedded processor -> system-on-chip. The SAM4N family is Microchip (formerly Atmel) SMART ARM-based flash MCU portfolio, and the SAM4N16C variant is positioned as the entry point to the Cortex-M4-based flash MCU lineup. Key features include the ARM Cortex-M4 core with hardware DSP instructions and a Thumb-2 instruction set, a Memory Protection Unit (MPU) for robust firmware partitioning, and single-cycle multiply-accumulate for digital signal processing workloads such as filtering and sensor fusion. The 1 MB flash supports field firmware updates, while the 80 KB SRAM provides generous buffering for communication stacks and control algorithms. Technically, the ATSAM4N16CA-AU operates from a 1.62 V to 3.6 V supply (2.5 V / 3.3 V typical rails) and is specified for industrial temperature ranges (part suffix -I, green LQFP package, MRLA). The device is pin-to-pin compatible with the SAM3N, SAM3S (48/64/100-pin versions), SAM4S (64/100-pin versions), and SAM7S legacy 64-pin products, offering a low-risk migration path for existing boards seeking a performance upgrade to Cortex-M4 with DSP capability. Typical applications include industrial control and factory automation nodes, consumer and industrial HMI panels, metering and sensing systems, and motor-adjacent control logic where DSP instructions accelerate control loops. Design consideration: because the Cortex-M4 DSP instructions and MPU are the main deltas versus the older Cortex-M3 SAM3S parts, verify that your toolchain and CMSIS headers target the M4 core before migrating. This page synthesizes distributor pricing, drop-in alternatives, pin-compatibility data, and practical design notes not found in a single manufacturer document.

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ATSAM4N16CA-CFU - 100MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4N16CA-CFU

ATSAM4N16CA-CFU - 100MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16CA-CFU is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz with 1 MB (1024 KB) embedded Flash and 80 KB SRAM, housed in a 100-ball VFBGA (7x7 mm) package from the SAM4N series. A 32-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, sitting at the heart of embedded systems within the broader hierarchy of ARM-based semiconductor devices. The SAM4N family is Microchip/Atmel's entry point to the ARM Cortex-M4-based Flash MCU portfolio, positioned below the SAM4S series as a reduced-BOM-cost migration path for cost-sensitive embedded designs. Key features include the ARM Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU) for robust software partitioning, 1024 KB of zero-wait-state embedded Flash, 80 KB of SRAM, and operation from a 1.62 V to 3.6 V single supply. The industrial temperature rating (Mouser lists it as IND TEMP, MRL A) and green/RoHS-compliant VFBGA package suit compact, high-density boards where a 7x7 mm 100-ball footprint saves PCB area versus 100-pin QFP alternatives. Technically, the Cortex-M4 core at 100 MHz provides DSP-capable arithmetic (single-cycle MAC) while retaining the low power consumption that makes the SAM4N series ideal for industrial automation, consumer and appliance, and energy metering markets, according to the Microchip SAM4N family datasheet (document 60001422B). The series offers pin-to-pin compatibility with SAM4S, SAM3S, SAM3N, and legacy SAM7S devices in matching 100-pin packages, facilitating in-portfolio migration without PCB rework. Typical applications include energy meters, industrial sensors and actuators, appliance control boards, and building automation nodes - all cases where Cortex-M4 DSP throughput, large Flash for firmware growth, and low BOM cost matter simultaneously. Design consideration: the VFBGA package requires careful PCB fanout and is best reflowed on boards designed for BGA inspection; if hand assembly or easy rework is required, the pin-compatible QFP version in the same family is preferable. Flash write-endurance and supply-decoupling guidance follow the SAM4N family datasheet. This page synthesizes distributor pricing (DigiKey, Mouser, LCSC, Octopart), drop-in same-package alternatives, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a single decision-ready reference as of 2026-09-20.

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ATSAM4N16CA-CFUR - 100MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4N16CA-CFUR

ATSAM4N16CA-CFUR - 100MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16CA-CFUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz with 1024 KB of embedded Flash and 80 KB of SRAM, housed in a 100-ball VFBGA (7x7 mm) package for industrial temperature ranges. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest level of the embedded-system hierarchy: MCU -> embedded processor -> system-on-chip. The SAM4N family sits within Microchip's (formerly Atmel) ARM-based MCU portfolio and belongs to the broader class of 32-bit microcontrollers used across industrial, consumer, and IoT platforms. Key features include the ARM Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU), and 1 MB (1M x 8) of Flash memory. The SAM4N series is positioned as the cost-reduced migration path from the SAM4S family, dropping USB and lowering BOM cost while retaining pin compatibility. Architecturally, the device operates from a 1.62 V to 3.6 V supply (per the ATSAM4N16C product page) with an industrial temperature rating, and integrates typical SAM4N peripherals such as UART/USART, SPI, TWI (I2C), timers, ADC, and PWM controllers. Firmware development uses standard ARM toolchains plus Microchip (Atmel) Studio / MPLAB X ecosystem, and the Thumb-2 and DSP instruction support enables efficient digital filtering and control math. Typical applications include industrial automation and sensor acquisition nodes, motor control and power-conversion supervision, and consumer/IoT devices requiring dense Flash for OTA-friendly firmware images. The 7x7 mm VFBGA suits space-constrained boards needing high integration without external memory. Design consideration: as a VFBGA package, the part requires controlled-impedance PCB escape routing and reflow assembly; verify ball-map fanout early. Select the CFU tray variant for prototyping if reel quantities are unnecessary. This page synthesizes distributor pricing, drop-in SAM4N/SAM4S family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N16CA-CU - 100MHz Cortex-M4 1MB MCU | Microchip
ATSAM4N16CA-CU

ATSAM4N16CA-CU - 100MHz Cortex-M4 1MB MCU | Microchip

The Microchip Technology ATSAM4N16CA-CU is a 32-bit ARM Cortex-M4 flash microcontroller running at 100 MHz with 1 MB of flash memory and 80 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package. Operating from 2.5 V or 3.3 V supplies over an industrial temperature range, it targets entry-level, cost-sensitive embedded designs. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, non-volatile program memory, volatile data memory, and peripherals into one chip. Within the power-management hierarchy of embedded systems, the MCU sits at the heart of firmware execution, sensor interfacing, and actuator control, sitting above discrete logic and below application processors. Key features of the SAM4N16C include the ARM Cortex-M4 core with DSP-friendly instruction extensions, 1 MB of single-cycle flash organized as 1M x 8, 80 KB of SRAM for data buffers and stacks, and the low power consumption that characterizes the SAM4N series. The -CU ordering code denotes the TFBGA GREEN, industrial temperature, MRL A variant in tray packaging. Technically, the SAM4N family balances compute throughput against static and dynamic power draw. The Cortex-M4 pipeline delivers deterministic real-time response while the on-chip flash controller supports the full 100 MHz core clock. Peripherals typical of the SAM4N series - serial communication interfaces, timers, ADC channels, and general-purpose I/O - let one chip replace a multi-chip logic and control solution in compact BGA-based boards. Typical applications include industrial automation nodes, consumer and appliance control boards, and energy metering products - three markets Microchip explicitly names for the SAM4N series. The 9x9 mm TFBGA footprint suits space-constrained, two-sided PCB designs where QFP packages would consume too much board area. Design consideration: because the SAM4N series is pin-to-pin compatible with the SAM4S, SAM3S, SAM3N, and SAM7S families per the Microchip datasheet, reserve board layout reuse by choosing the memory density that matches long-term firmware growth - the 512 KB ATSAM4N8CA-CU shares the same footprint if cost dominates. This page synthesizes distributor pricing tiers, drop-in alternatives from the SAM4N and SAM4S families, design notes, and an FAQ not found on the manufacturer datasheet alone.

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ATSAM4N16CA-CUR - Cortex-M4 100MHz 1MB Flash MCU | Microchip
ATSAM4N16CA-CUR

ATSAM4N16CA-CUR - Cortex-M4 100MHz 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4N16CA-CUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 100 MHz, with 1 MB (1024 KB) of embedded Flash and 80 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package for industrial-temperature operation. A microcontroller unit (MCU) integrates a processor core, memory, and peripherals on a single die, forming the lowest layer of the embedded-system hierarchy that spans MCUs, microprocessors (MPUs), and system-on-chip (SoC) devices. The SAM4N family belongs to Microchip (formerly Atmel) ARM-based SAM portfolio, built around the ARM Cortex-M4 core with Thumb-2 instruction set, DSP instructions, and a Memory Protection Unit (MPU). Key features include the 100 MHz Cortex-M4 core with hardware DSP instructions for fast multiply-accumulate operations, 1 MB of zero-wait-state embedded Flash for code and data storage, and rich serial connectivity with seven UARTs, four SPIs, and three I2C interfaces - enabling multi-protocol designs without external expanders. The device operates from a 1.62V to 3.6V supply (2.5V/3.3V typical rails), and offers pin-to-pin compatibility with SAM3S, SAM3N, SAM4S (64/100-pin versions), and SAM7S legacy devices, providing a low-risk migration path within the SAM portfolio. SAM4N positions itself as the ideal migration from SAM4S for applications requiring reduced BOM cost. Typical applications include industrial control and factory automation nodes, consumer and building appliances, motor-control auxiliary boards, and general-purpose embedded systems that need headroom for protocol bridging across multiple UART/SPI/I2C buses. When designing with this device, verify that the Flash/SRAM split (1 MB/80 KB) matches your application footprint, and account for the industrial operating range of -40C to +85C in thermal placement on the PCB. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4N8AA-AU - 100MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4N8AA-AU

ATSAM4N8AA-AU - 100MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4N8AA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 100 MHz with 512 KB of embedded flash memory and 64 KB of SRAM, housed in a 48-pin LQFP (7x7 mm) surface-mount package. It operates from 1.62 V to 3.6 V across the industrial temperature range. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest layer of the embedded-system hierarchy (MCU -> SoC -> application processor -> computer). The ARM Cortex-M4 core used here executes the Thumb-2 instruction set and includes DSP instructions for efficient digital signal processing plus a Memory Protection Unit (MPU) for robust RTOS deployments. Key differentiating features of the ATSAM4N8AA-AU include five USARTs, two SPI interfaces, and three I2C (TWI) controllers for fast serial communication, an 8-channel 12-bit ADC for analog sensing, PWM outputs, multiple timers, and a real-time clock (RTC). The 100 MHz Cortex-M4 with single-cycle MAC delivers roughly 125 DMIPS, providing DSP-class throughput in a low-power general-purpose MCU. Architecturally, the device belongs to Microchip's (formerly Atmel) SAM4N entry-point family within the broader SAM4 ARM Flash MCU portfolio. The flash-based program memory supports in-system programming via the Serial Wire Debug (SWD) or JTAG interface, and the MPU enables safe memory partitioning for FreeRTOS or Zephyr-class operating systems. Typical applications include industrial control panels, motor-adjacent sensing nodes, building automation controllers, and consumer appliances where multiple serial buses, ADC channels, and PWM channels must run concurrently under a single 3.3 V rail. Design consideration: supply the device from a clean 3.3 V rail (1.62 V to 3.6 V absolute range) and decouple each VDD pin with 100 nF ceramics; the ADC accuracy degrades with noisy supplies, so segregate analog grounding when using all 8 channels. This page synthesizes distributor pricing, drop-in family alternatives, pin-availability guidance, and practical design notes not found in the manufacturer datasheet alone. Pricing references are as of 2026-09-20.

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ATSAM4N8BA-AU - 100MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4N8BA-AU

ATSAM4N8BA-AU - 100MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4N8BA-AU is a 32-bit ARM Cortex-M4 microcontroller running at 100 MHz with 512 KB flash memory and 64 KB SRAM, housed in a 64-pin LQFP (10 x 10 mm) surface-mount package. It operates from a 1.62V to 3.6V supply and integrates six USARTs, three SPIs, and three I2C interfaces for high-speed serial communication. A microcontroller (MCU) is a single-chip embedded computer that combines a processor core, program memory, data memory, and peripherals on one die. Within the embedded hierarchy, the ATSAM4N8BA-AU belongs to the SAM4N family of ARM Cortex-M4-based microcontrollers, which sit under the broader categories of 32-bit MCUs, embedded processors, and system-on-chip devices used in industrial automation, consumer appliances, and energy metering. Key features include a 10-channel 12-bit ADC for accurate analog acquisition, a 10-bit DAC for waveform generation, PWM channels for motor and power control, general-purpose timers, and a real-time clock (RTC) for timekeeping in battery-backed systems. The Cortex-M4 core delivers single-cycle multiply-accumulate DSP instructions and hardware floating-point capability, allowing digital filtering and control-loop math to run efficiently at 100 MHz without an external DSP. Architecturally, the SAM4N series balances performance and low power consumption, making it well suited for always-on metering and automation nodes. According to the Microchip SAM4N family datasheet (60001422B), the series offers pin-to-pin compatibility with SAM4S, SAM3S, SAM3N, and SAM7S devices, enabling straightforward migration within the portfolio as memory or performance requirements change. Typical applications include industrial automation controllers, energy meters, consumer appliances, IoT sensor nodes, and motor control boards, where the combination of multiple USART/SPI/I2C buses, a 12-bit ADC, and PWM outputs covers most sensing and actuation needs from a single chip. A key design consideration is supply filtering: with a 1.62V to 3.6V operating range, decouple each VDD pin with 100 nF ceramics placed close to the package, and keep the analog supply pin fed through an RC filter from the main 3.3V rail to preserve ADC accuracy. This page synthesizes verified distributor pricing, pin-compatible drop-in alternatives across the SAM4N, SAM4S, and SAM3S families, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM4N8BA-AUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4N8BA-AUR

ATSAM4N8BA-AUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4N8BA-AUR is a 32-bit ARM Cortex-M4 microcontroller running at 100 MHz with 512 KB flash and 64 KB SRAM, housed in a 64-pin LQFP (10x10 mm) surface-mount package rated for industrial temperature ranges. 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-computing hierarchy: semiconductor -> microcontroller (MCU) -> embedded system. The ARM Cortex-M4 core used here is a 32-bit RISC processor optimized for deterministic real-time control, placing the ATSAM4N8B within Microchip's SAM4N family of general-purpose flash MCUs. Key features of the ATSAM4N8BA-AUR include 512 KB (512K x 8) of embedded flash memory for code and data storage, 64 KB of SRAM for runtime variables, and a rich peripheral set for communication: six USARTs, three SPIs, and three I2C interfaces. These serial resources make the device well suited to designs that must talk to multiple external ICs simultaneously. Technical depth comes from the Cortex-M4 architecture, which provides single-cycle multiply-accumulate DSP instructions and fast interrupt handling, allowing the 100 MHz core to handle both control loops and moderate signal processing without an external DSP. One integrated 10-channel 1 Msps-class ADC (per Microchip product data) offloads analog-to-digital conversion from external components. Typical applications include industrial automation nodes, motor control and sensor-hub boards, consumer appliance controllers, and multi-bus communication gateways that exploit the six USARTs and three SPI ports. A key design consideration is the industrial temperature rating (-40C to +85C per distributor data): confirm your worst-case ambient and self-heating stay within this window, and verify supply requirements in the manufacturer datasheet before finalizing power-tree design. This page synthesizes distributor pricing, drop-in family alternatives, comparison tables, and practical design notes not found in the standard manufacturer datasheet, providing engineers with a decision-ready product profile.

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ATSAM4N8BA-MU - 100MHz Cortex-M4 512KB Flash MCU | Microchip
ATSAM4N8BA-MU

ATSAM4N8BA-MU - 100MHz Cortex-M4 512KB Flash MCU | Microchip

The Microchip Technology ATSAM4N8BA-MU is a 32-bit ARM Cortex-M4 flash microcontroller running at 100 MHz with 512KB of flash memory and 64KB of SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed pad. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest level of the embedded computing hierarchy: MCU -> embedded processor -> microprocessor system. The SAM4N family sits within Microchip (formerly Atmel) ARM-based flash MCU portfolio as its entry point to the Cortex-M4 class, and is pin-to-pin compatible with the SAM4S, SAM3S, SAM3N and SAM7S families, which enables straightforward migration within the portfolio. Key features include six USARTs, three SPI interfaces and three I2C interfaces for high-speed serial communication, a 10-channel 12-bit ADC, a 10-bit DAC, PWM outputs, timers and an RTC. The device operates from a single 1.62V to 3.6V supply and is rated for industrial temperature ranges, with a green, RoHS-compliant package. Technically, the ARM Cortex-M4 core delivers efficient 32-bit computation with deterministic interrupt handling, while the generous serial connectivity (six USARTs plus three SPI plus three I2C) makes the device well suited to multi-protocol designs that would otherwise require external communication controllers. The 10-channel, 12-bit ADC supports multi-sensor front ends, and the complementary 10-bit DAC enables closed-loop analog control without external conversion ICs. Typical applications include industrial automation, consumer and appliance control, energy metering, and smart-home IoT nodes - all domains where the SAM4N family's balance of 100 MHz performance, low power consumption, and rich peripherals fits directly, according to the Microchip SAM4N family datasheet (document 60001422B). When designing with this device, keep the 1.62V to 3.6V supply range in mind for battery-powered designs, and use the exposed pad of the 64-QFN package as the ground return to improve thermal and signal-integrity performance. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM4N8BA-MUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4N8BA-MUR

ATSAM4N8BA-MUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4N8BA-MUR is a 32-bit ARM Cortex-M4 microcontroller running at 100 MHz with 512KB of flash memory and 64KB of SRAM, housed in a 64-pin QFN (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, forming the lowest level of the embedded processing hierarchy: microcontroller unit (MCU) -> embedded processor -> microprocessor -> computing system. The SAM4N family belongs to Microchip's (formerly Atmel) SAM4 line of ARM Cortex-M4-based flash MCUs, targeting cost-sensitive embedded control applications that need 32-bit performance without floating-point heavy workloads. Key features of the ATSAM4N8B device include six USARTs, three SPI interfaces, and three I2C/TWI interfaces for fast serial communication, plus a 10-channel 12-bit ADC, a 10-bit DAC, PWM channels, timers, and a real-time clock (RTC). The supply range of 1.62V to 3.6V allows direct battery operation from single-cell lithium chemistry or 3.3V industrial rails. Architecturally, the ARM Cortex-M4 core at 100 MHz delivers approximately 125 DMIPS with single-cycle multiply and hardware division, while the 512KB single-cycle flash and 64KB SRAM support large protocol stacks and data buffers typical of industrial gateways and sensing nodes. Typical applications include industrial automation nodes, motor control and PWM-driven power stages, sensor hubs using the 12-bit ADC, and building/HVAC controllers that rely on the RTC and multiple serial ports. Design consideration: the QFN exposed pad is the main ground/thermal path and must be soldered to a solid ground pour; also budget supply decoupling across all VDD/VDDIO pairs given the multi-rail 1.62V to 3.6V architecture. This page synthesizes distributor pricing (as of 2026-09-20), drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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