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ATSAM3N1AA-AU - 32-bit ARM Cortex-M3 MCU 48MHz | Microchip
ATSAM3N1AA-AU

ATSAM3N1AA-AU - 32-bit ARM Cortex-M3 MCU 48MHz | Microchip

The Microchip Technology ATSAM3N1AA-AU is a 32-bit ARM Cortex-M3 flash microcontroller running at up to 48 MHz, with 64KB of FLASH program memory, 8KB of SRAM, and 47 general-purpose I/O lines, housed in a 48-pin LQFP (7x7 mm) 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 tier of the embedded computing hierarchy: MCU -> embedded processor -> microprocessor-based system. The ATSAM3N1AA-AU belongs to Microchip (formerly Atmel) SMART ARM-based MCU family, sitting within the SAM3N series of cost-optimized Cortex-M3 devices. Key features include the ARM Cortex-M3 revision 2.0 core executing Thumb-2 instructions, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller (NVIC) for deterministic interrupt handling. The device operates from a 1.8V to 3.3V supply and uses an internal oscillator, reducing external component count and BOM cost. Program memory is 64KB (64K x 8) of embedded FLASH with 8KB (8K x 8) of SRAM for data and stack. Architecturally, the SAM3N series is the migration path from the SAM3S series for applications requiring reduced BOM cost, and it is pin-to-pin compatible with the SAM3S series. This allows designers to reuse PCB layouts and firmware across family members while scaling memory and peripherals. The aggressive price point and high integration push its scope into cost-sensitive, high-volume products. Typical applications include industrial control panels, consumer appliances, metering and sensor hubs, and building automation nodes where 32-bit performance is needed at 8-bit pricing. When designing with this part, budget the 8KB SRAM carefully for stack and buffers, and leverage the internal oscillator to eliminate crystals in cost-driven designs. The 47 I/O lines cover most mid-complexity embedded needs. This page synthesizes distributor pricing, drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet alone. Pricing references are as of 2026-09-19.

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ATSAM3N1AA-MU - 48MHz ARM Cortex-M3 MCU 64KB Flash | Microchip
ATSAM3N1AA-MU

ATSAM3N1AA-MU - 48MHz ARM Cortex-M3 MCU 64KB Flash | Microchip

The Microchip Technology ATSAM3N1AA-MU is a 32-bit ARM Cortex-M3 flash microcontroller running at up to 48 MHz, with 64 KB of Flash program memory and 8 KB of SRAM, housed in a 48-pin QFN (7x7 mm) package with exposed pad. It operates from a 1.62V to 3.6V single supply and provides up to 47 general-purpose I/O lines. A microcontroller unit (MCU) 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 broader hierarchy of semiconductor devices: ARM Cortex-M3 core, 32-bit RISC microcontroller, flash MCU, system-on-chip. MCUs replace multi-chip processor-plus-peripheral designs, reducing BOM cost and board area in embedded products. Key features include the ARM Cortex-M3 revision 2.0 core with Thumb-2 instruction set, a 24-bit SysTick timer, and a nested vector interrupt controller (NVIC) for deterministic interrupt handling. The ATSAM3N1AA-MU integrates a rich peripheral set typical of the SAM3N series, including UART/USART serial ports, SPI, TWI (I2C), a general-purpose clock-capable timer/counter block, an ADC, and a watchdog timer, enabling single-chip control of cost-sensitive systems. Technically, the SAM3N series is positioned as the ideal migration path from the SAM3S series for applications that require reduced BOM cost, and it is pin-to-pin compatible with SAM3S parts. Its aggressive price point and high level of integration push its scope of use into cost-sensitive, high-volume applications while preserving the Cortex-M3 tool chain and software reuse of the Atmel/Microchip ARM ecosystem. Typical applications include industrial control and automation nodes, consumer appliance interfaces, and embedded monitoring or metering systems that need 32-bit performance at 8-bit-class pricing. The 48 MHz core and hardware dividers handle control loops and communication stacks that would overload smaller 8-bit MCUs. A key design consideration: power the device from a clean 1.8V or 3.3V rail, decouple all supply pins with 100 nF ceramics placed close to the exposed-pad QFN, and solder the exposed pad to a ground plane for thermal and signal integrity. This page synthesizes distributor pricing, pin-to-pin drop-in alternatives within the SAM3N and SAM3S families, and practical design notes not found in the manufacturer datasheet.

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ATSAM3N1AB-AU - 48MHz Cortex-M3 64KB Flash MCU | Microchip
ATSAM3N1AB-AU

ATSAM3N1AB-AU - 48MHz Cortex-M3 64KB Flash MCU | Microchip

The Microchip Technology ATSAM3N1AB-AU is a 32-bit ARM Cortex-M3 flash microcontroller running at up to 48 MHz with 64KB of flash memory, housed in a 48-pin LQFP (7x7 mm) surface-mount package. A microcontroller (MCU) integrates a processor core, program memory, RAM, and peripherals on a single chip, forming the lowest level of the embedded-system hierarchy: microcontroller unit (MCU) -> embedded processor -> semiconductor IC. The SAM3N1A belongs to the SAM3N series, built on the ARM Cortex-M3 RISC architecture with the Thumb-2 instruction set and a nested vector interrupt controller (NVIC). Key features include the ARM Cortex-M3 revision 2.0 core at 48 MHz, a 24-bit SysTick timer, flash memory of 64KB (64K x 8), operation from a 1.62V to 3.6V supply (1.8V/2.5V/3.3V rails), and capacitive-touch support via the Microchip QTouch library. The device is aggressive on price, targeting cost-sensitive high-volume designs. Technically, the SAM3N1A is pin-to-pin compatible with the SAM7S legacy products (48- and 64-pin versions) and the SAM3S series (48-, 64- and 100-pin versions), allowing board upgrades between Cortex-M3 and earlier ARM7 platforms with minimal redesign. Peripherals typically include UART/USART serial ports, SPI, TWI (I2C), timers, ADC channels, and direct capacitive-touch sensing, providing a complete low-power embedded control solution. Typical applications include industrial control nodes, consumer appliances, capacitive-touch human interface panels (buttons, wheels, sliders), and cost-sensitive high-volume embedded systems where a 32-bit core replaces 8-bit MCUs. When designing with this device, plan power sequencing for the 1.62V-3.6V supply range and verify legacy SAM7S/SAM3S pin mapping when migrating existing footprints. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a complete sourcing and selection resource.

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ATSAM3N1AB-MU - 48MHz Cortex-M3 MCU 64KB Flash | Microchip
ATSAM3N1AB-MU

ATSAM3N1AB-MU - 48MHz Cortex-M3 MCU 64KB Flash | Microchip

The Microchip Technology ATSAM3N1AB-MU is a 32-bit ARM Cortex-M3 flash microcontroller operating at up to 48 MHz, with 64 KB (64K x 8) of embedded FLASH memory and 8 KB of SRAM, housed in a 48-pin QFN (7x7 mm) exposed-pad surface-mount package. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, memory, and programmable peripherals on one die, sitting within the broader hierarchy of semiconductor devices: integrated circuit -> embedded processor -> ARM Cortex-M microcontroller. The SAM3N series, originally developed by Atmel and now manufactured by Microchip Technology, targets cost-sensitive, high-volume embedded applications where pin compatibility across family members enables easy migration and supply-chain flexibility. Key features of the ATSAM3N1AB-MU include the high-performance ARM Cortex-M3 RISC processor with Thumb-2 instruction set, 48 MHz maximum operating frequency, and 64 KB of single-cycle flash program memory. According to Microchip product documentation, the SAM3N series is pin-to-pin compatible with the SAM7S and SAM3S series, facilitating migration within the family when memory or peripheral requirements change. The device integrates standard communication peripherals typical of the SAM3N family, including USART, SPI, and TWI (I2C) interfaces, along with an ADC and general-purpose I/O, allowing a single chip to handle sensing, control, and communication in an embedded node. The aggressive price point and high integration level push its scope of use into cost-sensitive, high-volume applications, as stated in the SAM3N series datasheet. Typical applications include industrial control and automation nodes, consumer appliance interfaces, motor control panels, and battery-powered metering or sensing systems where a 32-bit core is required at 8/16-bit price levels. A key design consideration is power-supply decoupling: the 48-QFN exposed pad must be soldered to a solid ground plane for both thermal relief and signal integrity, and the industrial temperature-grade device should be operated within its rated conditions per the datasheet. This page synthesizes distributor pricing, stock availability, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM3N1BA-AU - 48MHz ARM Cortex-M3 MCU 64KB Flash | Atmel
ATSAM3N1BA-AU

ATSAM3N1BA-AU - 48MHz ARM Cortex-M3 MCU 64KB Flash | Atmel

The Atmel (now Microchip Technology) ATSAM3N1BA-AU is a 32-bit ARM Cortex-M3 flash microcontroller running at up to 48 MHz, with 64 KB of Flash program memory, 8 KB of SRAM, and 47 general-purpose I/O lines, housed in a 64-pin LQFP (10x10 mm) package. A microcontroller (MCU) integrates a processor core, memory, and peripherals on a single die, serving as the mid-level controller between simple 8-bit parts and full application processors. The SAM3N series sits within the broader ARM Cortex-M embedded controller hierarchy and is designed to converge performance and simplicity for cost-sensitive 32-bit designs. Key features include the ARM Cortex-M3 revision 2.0 core with Thumb-2 instruction set, a 24-bit SysTick timer, and a Nested Vector Interrupt Controller (NVIC) for deterministic interrupt handling. The internal oscillator eliminates the need for an external crystal in many designs, and the device is pin-to-pin compatible with SAM7S legacy products (48- and 64-pin versions) and SAM3S devices, simplifying migration paths. Technical depth: the Cortex-M3 core provides Harvard architecture with separate instruction and data buses, hardware divide, and low-latency interrupt preemption. Flash memory executes code at full speed with an integrated controller, while the 8 KB SRAM supports typical control-loop and communication-buffer workloads at 48 MHz. Typical applications include industrial control, consumer appliances, metering, and general-purpose embedded systems where a modern 32-bit upgrade from 8-bit MCUs is desired without raising system cost. Design consideration: the -AU suffix denotes a lead-free, RoHS-compliant LQFP tray package rated for industrial temperature ranges; verify current consumption budget versus the lower-power SAM3N variants early in the design. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found on the manufacturer datasheet alone.

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ATSAM3N1BA-MU - 48MHz 64KB Cortex-M3 MCU | Microchip
ATSAM3N1BA-MU

ATSAM3N1BA-MU - 48MHz 64KB Cortex-M3 MCU | Microchip

The Microchip ATSAM3N1BA-MU is an ARM Cortex-M3 microcontroller with a 48 MHz operating frequency, 64 KB of programmable Flash memory, and 8 KB of SRAM, housed in a 64-QFN 9x9 mm package. It provides 47 I/O pins and uses an internal oscillator, making it suitable for cost-sensitive embedded systems that require substantial memory and peripheral integration in a compact surface-mount package. An ARM Cortex-M3 microcontroller is a 32-bit reduced-instruction-computing core designed for embedded control. In the product hierarchy, it combines a processor core, embedded Flash, static RAM, interrupt control, timers, communication interfaces, and GPIO into one microcontroller IC. The Cortex-M3 revision 2.0 core supports Thumb-2 instructions, while the 24-bit SysTick counter and Nested Vector Interrupt Controller support deterministic event handling in real-time firmware. Key features include 64 KB (64K x 8) program memory, 8K x 8 RAM, 47 I/O pins, and operation up to 48 MHz. The 64-QFN package provides a compact 9x9 mm surface-mount solution, while the supplied listing identifies tray packaging. The integration of memory, GPIO, and control peripherals can reduce the number of external components in compact industrial, consumer, communications, and control products. The device is identified as an ARM-based Flash MCU and belongs to the SAM3N family. Verified listings describe it as a 32-bit microcontroller with 64 KB Flash and 8 KB RAM. The available distributor data also identifies a 1.62 V to 3.6 V supply range for ATSAM3N1BA-MU. Detailed peripheral assignments, electrical limits, pin names, and package dimensions must be confirmed against the original Atmel or Microchip datasheet before PCB release. Typical applications include embedded control panels, low-cost sensor nodes, communications equipment, motor and relay control, industrial automation modules, and compact consumer products. The internal oscillator and integrated memory help simplify clock and memory design, while the 47 I/O pins provide interfaces for sensors, actuators, displays, and serial transceivers. Firmware must be selected for the exact ATSAM3N1BA-MU pinout and peripheral map. For a new layout, place decoupling close to the supply pins and route high-current or sensitive signals away from switching nodes. Before replacing another MCU, verify package dimensions, pin names, supply limits, peripheral functions, programming requirements, and bootloader compatibility. The SAM3N family is stated to be pin-to-pin compatible with the SAM3S series, but that family-level statement does not automatically establish drop-in compatibility for every MPN or package variant.

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ATSAM3N1BB-AU - 48MHz Cortex-M3 MCU 64KB Flash | Microchip
ATSAM3N1BB-AU

ATSAM3N1BB-AU - 48MHz Cortex-M3 MCU 64KB Flash | Microchip

The Microchip Technology ATSAM3N1BB-AU is a 32-bit ARM Cortex-M3 flash microcontroller operating at up to 48 MHz, with 64KB (64K x 8) of Flash memory, housed in a 64-pin LQFP (10 x 10 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 tier of the embedded processing hierarchy: MCU -> embedded processor -> application processor. The SAM3N family belongs to Microchip's (formerly Atmel's) ARM-based Flash MCU portfolio and sits in the cost-optimized, high-volume segment of that hierarchy, targeting applications that need 32-bit performance without the cost of higher-integration parts. Key features of the ATSAM3N1BB include the ARM Cortex-M3 revision 2.0 core running at up to 48 MHz, Thumb-2 instruction set support, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller (NVIC). According to Microchip documentation, the SAM3N series offers up to 256KB Flash and up to 24KB SRAM across family variants, with the SAM3N1B specifically providing 64KB Flash. The green (Grn) LQFP package is RoHS-oriented for lead-free assembly. The most strategically important feature is pin compatibility: the SAM3N series is pin-to-pin compatible with the SAM7S legacy products (48- and 64-pin versions) and the SAM3S series (48-, 64-pin versions), which facilitates migration within the family and protects PCB investments across design generations. Typical applications include cost-sensitive industrial control boards, consumer appliances, metering front ends, and high-volume embedded systems where aggressive pricing and ARM ecosystem tooling matter more than maximum integration. Design consideration: choose the 64-pin LQFP variant only if you need the expanded I/O; the family also offers 48-pin options for lower-cost boards, and code is portable across the family via the CMSIS-compatible toolchain (Atmel/Microchip Studio, ARM GCC). This page synthesizes distributor pricing, pin-compatible SAM3N/SAM3S/SAM7S alternatives, and practical migration notes not consolidated on the manufacturer datasheet page.

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ATSAM3N1BB-AUR - Cortex-M3 MCU 48MHz 64KB Flash | Microchip
ATSAM3N1BB-AUR

ATSAM3N1BB-AUR - Cortex-M3 MCU 48MHz 64KB Flash | Microchip

The Microchip Technology ATSAM3N1BB-AUR is a 32-bit ARM Cortex-M3 microcontroller from the SAM3N series, operating at up to 48 MHz with 64KB of Flash program memory and 8KB of SRAM, housed in a 64-pin LQFP (10x10 mm) surface-mount package supplied in tape and reel. A microcontroller (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: ARM Cortex-M3 core -> 32-bit microcontroller -> embedded processor -> semiconductor device. The SAM3N family is Microchip/Atmel's entry-level, cost-optimized Cortex-M3 line, and the series is pin-to-pin compatible with the SAM3S series, enabling straightforward migration when USB or added memory is later required. Key features of the ATSAM3N1BB-AUR include a high-performance 32-bit RISC Cortex-M3 core with nested vectored interrupt controller, 64KB (64K x 8) of embedded Flash, 8KB of SRAM, a supply range of 1.8V to 3.3V, and industrial temperature operation (-40C to +85C). Peripherals include multiple serial communication interfaces (UART, SPI, I2C/TWI), a 10-bit ADC, timers, PWM channels, and general-purpose I/O, providing strong integration for cost-sensitive designs. Technically, the Cortex-M3 architecture delivers deterministic interrupt handling via the NVIC, a 3-stage pipeline, and Thumb-2 instruction density, allowing efficient C-language execution without external memory. The SAM3N integrates a power management controller with multiple sleep and wait modes, reducing average current in battery-powered systems. The green, halogen-free LQFP package with gull-wing terminals supports automated assembly and MSL-compliant reflow. Typical applications include industrial automation and control panels, consumer appliances, metering, lighting control, and PC/peripheral interfaces where a 48 MHz 32-bit core with rich serial connectivity is required at aggressive price points. Design consideration: supply the MCU from a clean 3.3V rail with local 0.1uF decoupling on each supply pin pair, and reserve the SAM3S pin-compatible footprint (e.g., ATSAM3S1BB) if USB may be needed in future product variants. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM3N1BB-MU - 48MHz Cortex-M3 MCU 64KB Flash | Microchip
ATSAM3N1BB-MU

ATSAM3N1BB-MU - 48MHz Cortex-M3 MCU 64KB Flash | Microchip

The Microchip Technology ATSAM3N1BB-MU is a 32-bit ARM Cortex-M3 flash microcontroller running at up to 48 MHz, with 64 KB (64K x 8) embedded Flash, 8 KB SRAM, and 1.62V to 3.6V operation, housed in a 64-pin QFN (9x9 mm) surface-mount package. A microcontroller (MCU) is a single-chip embedded processor that integrates a CPU core, program memory, data memory, and peripherals such as UARTs, SPI, I2C, timers, and ADCs. Within the power-management hierarchy of embedded systems, the MCUs sit at the application-control layer, executing firmware that orchestrates sensors, actuators, and communication interfaces. The SAM3N series belongs to Microchip's (formerly Atmel) ARM-based flash MCU family, positioned for cost-sensitive, high-volume industrial and consumer designs. Key features of the ATSAM3N1BB include the ARM Cortex-M3 revision 2.0 core with Thumb-2 instruction set, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller (NVIC). Embedded Flash uses a 128-bit wide access bus with a memory accelerator to sustain zero-wait-state execution at 48 MHz. The device supports Microchip's QTouch library for capacitive touch buttons, wheels, and sliders, adding touch interfaces without external controllers. Architecturally, the SAM3N1B emphasizes integration and legacy compatibility: it is pin-to-pin compatible with the SAM7S legacy products (48- and 64-pin versions) and with the SAM3S series (48-, 64-, and 100-pin versions), which protects existing PCB investments during platform migrations. The 64-QFN package exposes a bottom pad that must be connected to ground per the datasheet, providing both electrical grounding and thermal relief. Typical applications include industrial control nodes, consumer appliances, capacitive-touch user interfaces, and general-purpose embedded controllers where 64 KB of Flash and 48 MHz performance suffice at an aggressive price point. A key design consideration is supply supervision: operating from 1.62V to 3.6V, the part tolerates 1.8V, 2.5V, and 3.3V rails, but brown-out configuration and decoupling should follow the manufacturer datasheet for reliable Flash operation. This page synthesizes distributor pricing, drop-in alternatives, pin-compatibility cross-references, and practical design notes not found in the manufacturer datasheet.

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ATSAM3N1BB-MUR - 48MHz Cortex-M3 MCU 64KB Flash | Microchip
ATSAM3N1BB-MUR

ATSAM3N1BB-MUR - 48MHz Cortex-M3 MCU 64KB Flash | Microchip

The Microchip Technology ATSAM3N1BB-MUR is a 32-bit ARM Cortex-M3 microcontroller operating at 48 MHz with 64KB of FLASH program memory and 8KB of SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed pad. It belongs to the SAM3N series, a cost-optimized family of flash microcontrollers designed for high-volume, cost-sensitive embedded applications. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the brain of embedded systems. Within the power/performance hierarchy, the SAM3N series sits between entry-level 8-bit MCUs and higher-performance SAM4/SAM7 parts, offering 32-bit compute with ARM Cortex-M3 RISC architecture at an aggressive price point. According to Microchip, the SAM3N series is pin-to-pin compatible with the SAM3S series, enabling straightforward migration paths. Key features include a 48 MHz Cortex-M3 core, 64KB single-cycle flash memory, 8KB SRAM, and connectivity peripherals comprising I2C (TWI), SPI, UART/USART, and IrDA serial communication. The device operates from a single supply of 1.62V to 3.6V (with 1.8V, 2.5V, and 3.3V typical rails), making it suitable for battery-powered designs. It is ready for capacitive touch through the Microchip QTouch library, supporting buttons, wheels, and sliders without external components. Technically, the Cortex-M3 core provides a 3-stage pipeline, Thumb-2 instruction set, and a Nested Vectored Interrupt Controller (NVIC) for deterministic interrupt handling, while the flash accelerator keeps effective performance close to the 48 MHz clock rate. The 64-QFN package with exposed pad offers good thermal and electrical performance in a 9x9 mm footprint for space-constrained boards. Typical applications include industrial control boards, consumer appliances, metering and sensing nodes, and capacitive-touch user interfaces. The combination of 64KB flash and rich serial connectivity fits firmware-driven control tasks where cost and footprint dominate. A key design consideration is supply decoupling: place low-ESR ceramic capacitors close to the VDD/VDDIO pins and connect the exposed pad to ground for thermal dissipation and signal integrity. This page synthesizes distributor availability, drop-in alternatives within the pin-compatible SAM3N/SAM3S families, and practical design notes not found in a single manufacturer datasheet.

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ATSAM3N1CA-AU - 48MHz Cortex-M3 64KB MCU | Microchip
ATSAM3N1CA-AU

ATSAM3N1CA-AU - 48MHz Cortex-M3 64KB MCU | Microchip

The Microchip ATSAM3N1CA-AU is a 32-bit ARM Cortex-M3 flash microcontroller operating up to 48 MHz, with 64KB program flash and 8K x 8 RAM in a 100-LQFP package. It provides 79 I/O pins and uses an internal oscillator. The device combines a compact microcontroller core with embedded analog, timing, communication, and control peripherals for embedded applications. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, I/O, timers, interrupt control, and peripherals on one integrated circuit. The ATSAM3N1CA-AU belongs to the SAM3N microcontroller family and is based on ARM Cortex-M3 revision 2.0. Its 32-bit architecture and Thumb-2 instruction set support efficient control-oriented processing in consumer, industrial, and medical embedded products. Key verified features include operation up to 48 MHz, 64KB flash memory, 8K x 8 RAM, 79 I/O pins, and a 100-LQFP package with a 14 x 14 mm footprint. The listed power-supply range is 1.62 V to 3.6 V, while the operating ambient-temperature range is -40°C to 85°C. Additional listed peripherals include three-channel 16-bit timers, PWM capability, a 10-bit ADC, and communication and real-time timing functions. The Cortex-M3 core includes a 24-bit SysTick counter and a Nested Vector Interrupt Controller. These resources allow firmware to coordinate precise timing, interrupt-driven I/O, motor or waveform control, and mixed-signal measurement without requiring multiple discrete components. The 64KB flash capacity is suitable for compact control firmware, while the 8K x 8 RAM supports working state, buffers, stacks, and peripheral data structures. Typical applications include industrial automation, consumer electronics, medical devices, data acquisition, low-speed communication, and embedded control systems. Designers should verify pin multiplexing, power sequencing, clock configuration, and peripheral instance availability against the manufacturer datasheet before finalizing a PCB. The surface-mount LQFP package also requires adequate assembly clearance and thermal consideration during soldering and enclosure design. This page consolidates verified specifications, sourcing information, design considerations, and application guidance. Distributor pricing and lifecycle details should be checked against current authorized-channel data before purchase because the supplied results include search snippets rather than a complete manufacturer-approved inventory record.

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ATSAM3N1CA-CU - 48MHz Cortex-M3 MCU | Microchip | 100-TFBGA
ATSAM3N1CA-CU

ATSAM3N1CA-CU - 48MHz Cortex-M3 MCU | Microchip | 100-TFBGA

The Microchip Technology ATSAM3N1CA-CU is a 32-bit ARM Cortex-M3 microcontroller operating up to 48 MHz, with 64 KB of Flash program memory, 8 KB of SRAM, and 79 I/O in a 100-TFBGA (9x9 mm) package. It combines a 1.62 V to 3.6 V supply range with an internal oscillator and an extensive serial-interface set, making it suitable for compact embedded-control and cost-sensitive migration designs. A microcontroller is a programmable integrated circuit that combines a processor core, memory, peripherals, and I/O in one package. The ATSAM3N1 belongs to the SAM3N family, a reduced-cost branch of the SAM3 series. According to the manufacturer documentation, the SAM3N family provides a migration path from SAM3S devices and is pin-to-pin compatible with the SAM3S family, supporting design consolidation while controlling component cost. Key features include an ARM Cortex-M3 revision 2.0 core running to 48 MHz, the Thumb-2 instruction set, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller. The device provides 64 KB of Flash program memory, 8 KB of RAM, 79 I/O, and connectivity including I2C, SPI, UART/USART, and IrDA. These resources support moderate real-time workloads without requiring a larger external-memory interface. The Cortex-M3 architecture provides deterministic interrupt handling and efficient 32-bit processing while retaining a straightforward firmware-development model. Its integration of communications peripherals reduces the need for external interface controllers, while the 100-TFBGA package supports dense boards where connector count and placement flexibility are important. The verified distributor data also identifies the part in a 100-TFBGA package, although one result labels the case as 100-TQFP; package-specific mechanical drawings should therefore be checked against the exact ordering code before layout. Typical applications include industrial controllers, compact sensor nodes, building-automation equipment, serial gateways, and cost-sensitive consumer devices. The ATSAM3N1CA-CU is particularly appropriate when firmware and peripheral requirements fit within 64 KB of Flash and 8 KB of SRAM, and when PCB area favors a 9 x 9 mm BGA package over a leaded package. Designers should plan decoupling close to the supply pins, validate the exposed-pad thermal path, and use a package-specific footprint and pin-assignment library. Before committing to a drop-in substitution, verify supply voltage, peripheral mix, pin mapping, flash/RAM capacity, and migration notes because compatibility within the SAM3N family does not by itself establish compatibility with every unrelated microcontroller.

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ATSAM3N1CB-AU - 48MHz Cortex-M3 MCU 64KB Flash | Microchip
ATSAM3N1CB-AU

ATSAM3N1CB-AU - 48MHz Cortex-M3 MCU 64KB Flash | Microchip

The Microchip Technology (Atmel) ATSAM3N1CB-AU is a 32-bit ARM Cortex-M3 flash microcontroller from the SAM3N series, running at up to 48 MHz with 64KB of on-chip flash memory in a 100-pin LQFP (14x14 mm) surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripheral interfaces such as UART, SPI, and I2C. The SAM3N family sits within the broader hierarchy of 32-bit MCUs based on the ARM Cortex-M3 RISC processor, a widely adopted embedded-core architecture that balances performance, deterministic interrupt handling, and low power consumption for cost-sensitive industrial designs. Key features of the ATSAM3N1CB-AU include the high-performance 32-bit Cortex-M3 core at 48 MHz, 64KB (64K x 8) of embedded flash for program storage, operation from 1.8V, 2.5V, or 3.3V supply rails, and the high pin-count 100-LQFP package that exposes generous GPIO and peripheral routing for complex boards. The device belongs to the SAM3N series, which Microchip (via the Atmel acquisition) positions as a general-purpose, cost-effective flash MCU line. Technically, the part leverages the ARM Cortex-M3 RISC processor with thumb-2 instruction set efficiency, nested vectored interrupt control, and standard Atmel/Microchip SAM peripheral infrastructure. The 100-pin LQFP (14x14) footprint is a mature, industry-standard surface-mount package compatible with conventional reflow assembly processes. Typical applications include industrial automation nodes, consumer appliance control boards, motor-adjacent control logic, and embedded sensing/communication modules where a 32-bit core with 64KB flash is sufficient and USB or Ethernet are not required. A key design consideration is supply-rail selection: because the device supports 1.8V, 2.5V, and 3.3V operation, engineers should validate I/O voltage level compatibility with connected peripherals early in the design. Adequate decoupling capacitors on all supply pins of the 100-pin package are essential. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM3N1CB-AUR - 48MHz Cortex-M3 MCU 64KB Flash | Microchip
ATSAM3N1CB-AUR

ATSAM3N1CB-AUR - 48MHz Cortex-M3 MCU 64KB Flash | Microchip

The Microchip Technology ATSAM3N1CB-AUR is a 32-bit ARM Cortex-M3 microcontroller operating at 48 MHz, with 64KB of FLASH program memory and 8KB of SRAM, housed in a 100-pin LQFP (14x14 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 -> embedded processor -> system-on-chip -> computing platform. The SAM3N series belongs to Microchip (formerly Atmel) ARM-based flash MCU family, targeting cost-sensitive, low-power industrial and consumer designs. Key features include the ARM Cortex-M3 RISC core at up to 48 MHz, 64KB (64K x 8) of flash program memory, 8KB of SRAM, and connectivity peripherals including I2C, SPI, UART/USART, and IrDA. Analog capability is a highlight: 16 channels of 10-bit ADC and one 10-bit DAC, unusual at this price point and valuable for sensor-interface designs. The device operates from a 1.62V to 3.6V supply (1.8V/3.3V nominal) across an industrial temperature range of -40C to +85C. The 100-LQFP (14x14) package provides gull-wing leads for surface mounting and sufficient I/O for displays, keypads, and multiple communication buses. The flash-based program memory supports in-system programming via the Serial Wire Debug and JTAG-style debug interfaces standard to Cortex-M3 devices. Typical applications include industrial control panels, consumer appliances, metering, building automation, and portable battery-powered instruments where the wide 1.62V-3.6V supply range and 16-channel ADC reduce external component count. Design consideration: budget SRAM carefully - 8KB is adequate for bare-metal C code and lightweight RTOS kernels such as FreeRTOS, but restricts large buffers, so plan memory allocation early. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-19.

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ATSAM3N1CB-CU - Cortex-M3 48MHz 64KB MCU | Microchip (Tape & Reel)
ATSAM3N1CB-CU

ATSAM3N1CB-CU - Cortex-M3 48MHz 64KB MCU | Microchip (Tape & Reel)

The Microchip Technology ATSAM3N1CB-CU is a 32-bit ARM Cortex-M3 microcontroller running at 48 MHz with 64 KB Flash and housed in a 100-ball TFBGA (9x9 mm) package supplied on tape and reel. Operating from 1.8V or 3.3V supplies across an industrial -40C to +85C temperature range, it integrates a 16-channel 10-bit ADC and a 10-bit DAC. A microcontroller unit (MCU) is a single-chip embedded computer combining a processor core, program memory, data memory, and peripherals on one die. Within the embedded systems hierarchy, the SAM3N family sits in Microchip (formerly Atmel) ARM-based flash MCU portfolio, positioned above 8-bit AVR parts and below the high-performance SAM E70 series, and belongs to the broader class of 32-bit RISC microcontrollers used in industrial and consumer control systems. Key features include the high-performance ARM Cortex-M3 RISC core at up to 48 MHz, 64 KB (64K x 8) of embedded Flash for code storage, and rich analog integration: the 16-channel, 10-bit ADC supports multi-sensor acquisition without external front ends, while the on-chip 10-bit DAC enables audio cues and control references. Peripheral set covers Brown-out Detect/Reset, DMA, Power-on Reset, PWM channels, and a Watchdog Timer for fault-safe operation. Technically, the Cortex-M3 core delivers deterministic interrupt handling via its nested vectored interrupt controller, and the DMA controller offloads data movement between peripherals and memory, freeing CPU cycles. The GREEN, halogen-conscious, MRL B qualified package targets industrial temperature environments, and the fine-pitch 0.8 mm ball TFBGA footprint yields a compact 9x9 mm solution for space-constrained boards requiring high I/O density. Typical applications include industrial sensor hubs leveraging the 16-channel ADC, building automation and HVAC control nodes using PWM outputs, and battery-powered portable instruments exploiting the low-power 1.8V operation mode. The part also suits consumer appliance control panels where DAC-driven feedback tones add user-interface value. When designing with the ATSAM3N1CB-CU, budget the TFBGA layout carefully: the fine-pitch ball array requires via-in-pad or fan-out design rules, and multi-layer stackups are recommended to break out the 100-ball footprint. Decouple all VDD/VDDIO pairs per the SAM3N datasheet recommendations. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-19.

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ATSAM3N1CB-CUR - Cortex-M3 48MHz 64KB MCU | Microchip
ATSAM3N1CB-CUR

ATSAM3N1CB-CUR - Cortex-M3 48MHz 64KB MCU | Microchip

The Microchip Technology ATSAM3N1CB-CUR is a 32-bit ARM Cortex-M3 microcontroller running at 48 MHz with 64 KB Flash and housed in a 100-ball TFBGA (9x9 mm) package supplied on tape and reel. Operating from 1.8V or 3.3V supplies across an industrial -40C to +85C temperature range, it integrates a 16-channel 10-bit ADC and a 10-bit DAC. A microcontroller unit (MCU) is a single-chip embedded computer combining a processor core, program memory, data memory, and peripherals on one die. Within the embedded systems hierarchy, the SAM3N family sits in Microchip (formerly Atmel) ARM-based flash MCU portfolio, positioned above 8-bit AVR parts and below the high-performance SAM E70 series, and belongs to the broader class of 32-bit RISC microcontrollers used in industrial and consumer control systems. Key features include the high-performance ARM Cortex-M3 RISC core at up to 48 MHz, 64 KB (64K x 8) of embedded Flash for code storage, and rich analog integration: the 16-channel, 10-bit ADC supports multi-sensor acquisition without external front ends, while the on-chip 10-bit DAC enables audio cues and control references. Peripheral set covers Brown-out Detect/Reset, DMA, Power-on Reset, PWM channels, and a Watchdog Timer for fault-safe operation. Technically, the Cortex-M3 core delivers deterministic interrupt handling via its nested vectored interrupt controller, and the DMA controller offloads data movement between peripherals and memory, freeing CPU cycles. The GREEN, halogen-conscious, MRL B qualified package targets industrial temperature environments, and the fine-pitch 0.8 mm ball TFBGA footprint yields a compact 9x9 mm solution for space-constrained boards requiring high I/O density. Typical applications include industrial sensor hubs leveraging the 16-channel ADC, building automation and HVAC control nodes using PWM outputs, and battery-powered portable instruments exploiting the low-power 1.8V operation mode. The part also suits consumer appliance control panels where DAC-driven feedback tones add user-interface value. When designing with the ATSAM3N1CB-CUR, budget the TFBGA layout carefully: the fine-pitch ball array requires via-in-pad or fan-out design rules, and multi-layer stackups are recommended to break out the 100-ball footprint. Decouple all VDD/VDDIO pairs per the SAM3N datasheet recommendations. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-19.

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ATSAM3N2AA-AU - ARM Cortex-M3 48MHz 128KB MCU | Microchip
ATSAM3N2AA-AU

ATSAM3N2AA-AU - ARM Cortex-M3 48MHz 128KB MCU | Microchip

The Microchip Technology ATSAM3N2AA-AU is a 32-bit ARM Cortex-M3 flash microcontroller running at up to 48 MHz, with 128 KB (128K x 8) of embedded flash program memory and 16 KB of SRAM, housed in a 48-pin LQFP (7x7 mm) surface-mount package. It belongs to the low-power SAM3N series originally developed by Atmel, now part of Microchip Technology. A microcontroller unit (MCU) is an integrated circuit that combines a processor core, memory, and peripherals on a single chip, forming the heart of embedded systems. The SAM3N family sits within the broader hierarchy of ARM Cortex-M based flash MCUs, one level below application processors and above 8-bit MCUs, targeting cost-sensitive, low-power industrial and consumer applications. Key features include the ARM Cortex-M3 revision 2.0 core with the Thumb-2 instruction set, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller (NVIC) for deterministic interrupt handling. The device offers 34 general-purpose I/O lines, an internal oscillator, and pin-to-pin compatibility across the SAM3N memory variants, which simplifies migration between 64 KB, 128 KB, and 256 KB flash options without PCB changes. Architecturally, the Cortex-M3 Harvard-style core delivers efficient 32-bit computation with low power consumption, operating from 1.8 V to 3.3 V supply rails. The embedded flash supports in-system programming, while peripherals typical of the SAM3N series include USART, SPI, and two-wire interfaces for serial communication. Typical applications include industrial control nodes, consumer appliances, metering systems, and general-purpose embedded products where 128 KB of flash and a 48 MHz core provide adequate headroom. Designers should verify the exact peripheral set and pin multiplexing against the manufacturer datasheet before committing the PCB layout, since the 48-pin variant exposes fewer peripheral instances than larger 64-pin or 100-pin SAM3N members. This page synthesizes distributor pricing, drop-in family alternatives, and practical design guidance not consolidated in the manufacturer datasheet.

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ATSAM3N2AA-MU - 48MHz Cortex-M3 MCU 128KB Flash | Microchip
ATSAM3N2AA-MU

ATSAM3N2AA-MU - 48MHz Cortex-M3 MCU 128KB Flash | Microchip

The Microchip Technology (Atmel) ATSAM3N2AA-MU is a 32-bit ARM Cortex-M3 Flash microcontroller operating at up to 48 MHz, with 128 KB (128K x 8) Flash memory, 16 KB (16K x 8) SRAM, and 34 general-purpose I/O lines, housed in a 48-pin QFN (7x7 mm) surface-mount package with exposed pad. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip, forming the complete intelligence of an embedded system. Within the power-management hierarchy of embedded design, the SAM3N series sits in the cost-sensitive 32-bit MCU segment, built on the ARM Cortex-M3 RISC processor architecture and programmed with Thumb-2 instructions. Key features include the ARM Cortex-M3 revision 2.0 core running to 48 MHz, a 24-bit SysTick counter, a nested vector interrupt controller (NVIC), and an internal oscillator that removes the need for an external crystal in many designs. The peripheral set integrates 2x USARTs, 2x UARTs, 2x TWI (I2C-compatible) interfaces, 3x SPI ports, 1 PWM timer, and 6x general-purpose timers, plus an 8-channel 10-bit ADC for analog sensing. Technical depth: the SAM3N series is Atmel's entry point into Cortex-M3 technology, pin-to-pin compatible with the best-selling SAM7S and SAM3S series, and supports native Atmel QTouch capacitive touch (buttons, sliders, wheels). Advanced power management and low operating voltage capability (1.62V to 3.6V) reduce system power consumption. Typical applications include industrial control boards, consumer appliances, capacitive-touch user interfaces, and cost-sensitive, high-volume embedded products where SAM3S performance is needed at reduced BOM cost. Design consideration: choose the SAM3N over SAM3S when the reduced peripheral set of the N-series meets requirements, since it is pin-compatible and lowers cost; verify SRAM sizing for applications with large communication buffers. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM3N2BA-AU - 48MHz Cortex-M3 MCU 128KB Flash | Microchip
ATSAM3N2BA-AU

ATSAM3N2BA-AU - 48MHz Cortex-M3 MCU 128KB Flash | Microchip

The Microchip Technology (Atmel) ATSAM3N2BA-AU is a 32-bit ARM Cortex-M3 flash microcontroller operating at up to 48 MHz, with 128 KB (128K x 8) of Flash program memory, 16 KB of SRAM, and 47 general-purpose I/O lines, housed in a 64-pin LQFP (10x10 mm) surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals such as timers, communication interfaces, and analog-to-digital converters on one die. Within the MCU hierarchy, the ATSAM3N2BA belongs to the Atmel SAM3N family, a subset of ARM-based 32-bit flash microcontrollers, which in turn sits under the broader category of embedded processors and power-management systems on chip. Key features include the ARM Cortex-M3 revision 2.0 core with Thumb-2 instruction set, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller (NVIC). The internal oscillator type eliminates the need for an external crystal in many designs, reducing BOM cost. The SAM3N series is explicitly pin-to-pin compatible with the SAM3S series, making it an ideal migration path for cost-sensitive, high-volume applications requiring reduced BOM cost while retaining footprint compatibility. The 48 MHz Cortex-M3 pipeline provides deterministic interrupt handling via the NVIC, and Thumb-2 code density keeps Flash requirements modest, which is why 128 KB is sufficient for many communication and control stacks. The device operates from 1.8V/3.3V supply domains per distributor listings, covering both battery-friendly and standard 3.3V industrial logic. Typical applications include industrial automation nodes, consumer electronics, medical device control boards, and cost-sensitive high-volume products where the SAM3N datasheet cites its aggressive price point. Design consideration: leverage the SAM3S pin compatibility to reserve a layout that can be upgraded to higher-memory SAM3S or SAM3N4 variants without PCB respin. This page synthesizes verified distributor specifications, same-family drop-in alternatives, and practical design notes not consolidated in a single manufacturer datasheet.

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ATSAM3N2BA-MU - 48MHz Cortex-M3 MCU, 128KB Flash | Microchip
ATSAM3N2BA-MU

ATSAM3N2BA-MU - 48MHz Cortex-M3 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM3N2BA-MU is a 32-bit ARM Cortex-M3 flash microcontroller running at up to 48 MHz with 128KB of flash memory and 16KB of SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed pad. It operates from a 1.62V to 3.6V supply and provides 47 general-purpose I/O lines. A microcontroller (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: embedded system -> microcontroller -> ARM Cortex-M core family. The ATSAM3N2BA-MU belongs to Microchip's (formerly Atmel's) SAM3N series, which is based on the high-performance 32-bit ARM Cortex-M3 RISC processor and is pin-to-pin compatible with the SAM3S series, offering an ideal migration path for applications requiring reduced BOM cost. Key features include the ARM Cortex-M3 revision 2.0 core with Thumb-2 instruction set, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller (NVIC). The peripheral set comprises 2x USARTs, 2x UARTs, 2x TWI (I2C) interfaces, 3x SPI interfaces, 1 PWM timer, 6x general-purpose 16-bit timers, an RTC, and a 10-bit ADC. An internal oscillator removes the need for an external crystal in many designs, cutting component cost. Technically, the SAM3N series was engineered for cost-sensitive, high-volume applications; its aggressive price point and high integration push its scope of use far into consumer and industrial volume products. The Thumb-2 instruction set delivers high code density, reducing flash requirements per function. Typical applications include industrial control panels, consumer appliances, metering equipment, and cost-sensitive IoT sensor nodes where 128KB flash and rich serial connectivity are sufficient. When designing with this device, note the 1.62V to 3.6V supply range permits direct battery operation, and the internal oscillator eliminates the external crystal for non-timing-critical UART applications. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM3N2CA-AU - 48MHz ARM Cortex-M3 MCU 128KB Flash | Microchip
ATSAM3N2CA-AU

ATSAM3N2CA-AU - 48MHz ARM Cortex-M3 MCU 128KB Flash | Microchip

The Microchip Technology ATSAM3N2CA-AU is a 32-bit ARM Cortex-M3 flash microcontroller running at up to 48 MHz with 128 KB (128K x 8) of Flash program memory, 16 KB of SRAM, and 79 general-purpose I/O lines, housed in a 100-pin LQFP (14x14 mm) 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: semiconductor -> integrated circuit -> microcontroller -> embedded system. The ATSAM3N2CA-AU belongs to the Atmel/Microchip SAM3N series, a family of cost-optimized ARM Cortex-M3 MCUs, and is pin-to-pin compatible across memory-density variants within the family. Key features include the ARM Cortex-M3 revision 2.0 core with Thumb-2 instruction set, a 24-bit SysTick timer, and a Nested Vector Interrupt Controller (NVIC) for deterministic interrupt handling. The device operates from 1.8V, 2.5V, or 3.3V supplies and uses an internal oscillator, reducing external bill-of-materials cost. The 100-pin LQFP exposes 79 I/O lines, offering strong pin-count headroom for display, keypad, and communication interfaces in high-volume designs. From a technical standpoint, the SAM3N series was engineered to converge ARM Cortex-M3 performance with an aggressive price point, pushing its scope of use far into cost-sensitive, high-volume applications. The SAM3N0/1/2/4 family members differ only in Flash/SRAM density and feature list, so firmware written for one density variant ports directly to another, and the pin-to-pin compatibility lets PCB designers scale memory without re-spinning the board. Typical applications include consumer appliance control panels, industrial sensor nodes, building automation, and POS/printer peripherals - anywhere a 48 MHz, 32-bit core with 128 KB Flash and abundant I/O is required at a competitive cost. Its internal oscillator and low-power operating points suit battery-backed and always-on designs. Design consideration: verify supply-voltage selection early - the 1.8V/2.5V/3.3V operating range must match the rest of the system, and the internal oscillator, while cost-saving, should be validated against the required timing accuracy for UART or CAN interfaces. This page synthesizes distributor pricing, pin-compatible alternatives, and practical design guidance not found in the manufacturer datasheet, giving engineers a single citable reference for the ATSAM3N2CA-AU.

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ATSAM3N2CA-CU - 48MHz Cortex-M3 128KB MCU | Microchip
ATSAM3N2CA-CU

ATSAM3N2CA-CU - 48MHz Cortex-M3 128KB MCU | Microchip

The Microchip Technology ATSAM3N2CA-CU is a 32-bit ARM Cortex-M3 microcontroller operating at 48 MHz, with 128 KB of Flash program memory, 16 KB of SRAM, and 79 I/O pins in a 100-TFBGA package. The verified distributor listings identify a 100-TFBGA (9x9) package, while one distributor record describes a 100-TQFP; package-specific procurement and PCB design must therefore be confirmed against the manufacturer ordering information. The device belongs to the SAM3N family and combines a Cortex-M3 processor, embedded Flash, SRAM, interrupt control, and extensive peripheral integration. A microcontroller is a programmable semiconductor that executes firmware, coordinates digital interfaces, reads sensors, controls actuators, and manages system timing. The ATSAM3N2CA-CU hierarchy is microcontroller -> embedded Flash MCU -> ARM Cortex-M3 MCU -> SAM3N family. Its 48 MHz operating speed provides a practical balance between processing capacity and system complexity for embedded control, while 128 KB of Flash stores application firmware and 16 KB of SRAM supports working data and stack operations. The verified data identifies an ARM Cortex-M3 revision 2.0 core, Thumb-2 instruction support, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller. These features support efficient event handling, deterministic interrupt-driven designs, and compact embedded software. The listed operating supply range from another verified distributor result is 1.62 V to 3.6 V, although the manufacturer datasheet should be used to verify all electrical limits, pin functions, power sequencing, and peripheral characteristics before design release. Typical uses include industrial control, sensor acquisition, communications equipment, data acquisition, embedded automation, and compact consumer or instrumentation products. The 79 available I/O positions can support digital control lines, serial interfaces, analog functions, timers, and external peripherals where the selected package pinout permits them. Compared with a discrete processor implementation, an integrated MCU consolidates memory, interrupt handling, and peripherals into one component, reducing board complexity. The primary design consideration is exact package verification. Because the supplied web results contain conflicting 100-TFBGA and 100-TQFP descriptions, engineers should confirm the ordered package suffix, land pattern, pin assignments, exposed-pad requirements, and PCB footprint directly with Microchip documentation. This page consolidates distributor specifications, package ambiguity, sourcing information, and practical engineering cautions rather than presenting unverified assumptions as datasheet facts.

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ATSAM3N4AA-AU - 48MHz Cortex-M3 256KB MCU | Microchip
ATSAM3N4AA-AU

ATSAM3N4AA-AU - 48MHz Cortex-M3 256KB MCU | Microchip

The Microchip ATSAM3N4AA-AU is a 32-bit ARM Cortex-M3 microcontroller operating up to 48 MHz, with 256 KB of Flash memory, 24 KB of SRAM, and 34 I/O pins in a 48-LQFP 7 x 7 mm package. A microcontroller is a programmable semiconductor that integrates a processor core, memory, peripherals, and interface circuitry on one device. The ATSAM3N4AA-AU belongs to the SAM3N family and uses the ARM Cortex-M3 processor hierarchy, commonly described as an embedded microcontroller or RISC processor. Its architecture supports real-time control, communications, and general-purpose embedded processing. The verified specifications identify a 48 MHz operating speed, 256K x 8 Flash program memory, 24K x 8 RAM, 34 I/O pins, and a 48-LQFP package. The Cortex-M3 revision 2.0 core and Thumb-2 instruction set are also identified in the supplied technical data. A 24-bit SysTick Counter and Nested Vector Interrupt Controller support deterministic timing and interrupt handling in firmware-driven systems. The part is positioned for embedded control applications that require more processing capability than an 8-bit microcontroller while retaining a conventional 48-LQFP footprint. Its 32-bit architecture, 48 MHz clock, and integrated memory make it suitable for industrial control, data acquisition, communication equipment, and connected peripheral designs. Because the supplied data does not include peripheral inventories, operating-temperature limits, voltage tolerances beyond the listed supply range, detailed electrical timing, or a complete pin assignment table, those values must be verified against the manufacturer datasheet before schematic release, firmware configuration, or production qualification. This page synthesizes the supplied distributor specifications, available sourcing links, package information, and engineering-oriented guidance. It is intended to support component identification and initial design evaluation rather than replace the complete Microchip datasheet, errata documents, or application notes.

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ATSAM3N4AA-MU - Cortex-M3 48MHz 256KB Flash MCU | Microchip
ATSAM3N4AA-MU

ATSAM3N4AA-MU - Cortex-M3 48MHz 256KB Flash MCU | Microchip

The Microchip Technology ATSAM3N4AA-MU is a 32-bit ARM Cortex-M3 flash microcontroller running at up to 48 MHz, with 256 KB of embedded Flash and 24 KB of SRAM, housed in a 48-pin QFN (7x7 mm) surface-mount package with 34 general-purpose I/O lines. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals such as UARTs, timers, and ADCs. Within the embedded hierarchy, the SAM3N family belongs to the ARM Cortex-M3 class of 32-bit microcontrollers, positioned above 8-bit MCUs like the PIC16 series and alongside other Cortex-M parts such as the ATSAM4 and ATSAML21 families. The SAM3N is the cost-optimized sibling of the SAM3S, targeting cost-sensitive, high-volume embedded applications. Key differentiating features include the Cortex-M3 revision 2.0 core executing Thumb-2 instructions, a 24-bit SysTick timer, and a Nested Vector Interrupt Controller (NVIC) for deterministic interrupt handling. The 256 KB Flash uses a 128-bit-wide access bus with a memory accelerator to sustain full-speed 48 MHz execution, while the 24 KB SRAM supports modest buffering stacks and communication buffers. Supply operation spans 1.62 V to 3.6 V, enabling single 3.3 V-rail designs. Technically, the SAM3N series achieves its reduced BOM cost by streamlining the SAM3S peripheral set while retaining the same pinout. It is pin-to-pin compatible with SAM3S (48-, 64-, and 100-pin versions) and with legacy SAM7S 48- and 64-pin products, giving designers a documented migration path in both directions. Internal RC oscillators allow clocking without an external crystal for non-timing-critical applications. Typical applications include industrial sensors and actuators, building automation nodes, consumer appliance control, and battery-powered metering products where cost and low pin count matter more than maximum connectivity. When designing, budget the 34 I/O carefully - the 48-QFN package lacks the port expansion of the 64- and 100-pin siblings, so peripheral multiplexing decisions should be made before layout. This page synthesizes distributor pricing, drop-in alternatives across the SAM3N/SAM3S families, and practical design notes not found in the manufacturer datasheet.

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