ATSAM3N0AA-MUR - 48MHz ARM Cortex-M3 MCU 32KB Flash | Microchip
부품 번호: ATSAM3N0AA-MUR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $3.14 | $3.14 |
| 10 | $2.9 | $29.00 |
| 100 | $2.6 | $260.00 |
| 500 | $2.3 | $1,150.00 |
| 1,000 | $2 | $2,000.00 |
ATSAM3N0AA-MUR 개요
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 -> system-on-chip. MCUs execute real-time control tasks in power-sensitive and cost-sensitive designs where a full application processor is unnecessary. The SAM3N series belongs to Microchip (formerly Atmel) ARM-based flash MCU portfolio, which also includes the SAM4N, SAM L, and megaAVR families.
Key features of the ATSAM3N0AA-MUR include the ARM Cortex-M3 core with Thumb-2 instruction set, integrated DMA controller for low-CPU-overhead data transfers, PWM channels for motor and lighting control, and a watchdog timer (WDT) for system reliability. The nested vectored interrupt controller (NVIC) provides deterministic low-latency interrupt response, while the low-power modes support battery-operated designs.
Architecturally, the Cortex-M3 Harvard-structure core separates instruction and data buses, sustaining 1.25 DMIPS/MHz performance. Flash memory is accessible in a single wait state at full speed, and the peripheral bus structure allows independent peripheral clocking for aggressive power gating.
Typical applications include industrial automation nodes, consumer appliance control boards, sensor hubs, metering front ends, and low-cost connectivity accessories. The 48 MHz ceiling and rich peripheral set fit control loops and human-interface tasks without paying for higher-speed cores.
For design, budget the 32 KB flash carefully - application code plus bootloader must fit within the single erase-page management scheme, and pin-count planning should reserve pins for SWD programming and debug.
This page synthesizes verified distributor pricing, drop-in family alternatives, and practical design notes not found on the manufacturer datasheet page alone.
드롭인 대체품: ATSAM3N0AA-MUR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ATSAM3N0AA-MUR (동일 폼 팩터 및 풋프린트) — 차이점: Package, Packaging.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ATSAM3N1AA-MUR
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
ATSAM3N0BA-MUR
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$2.4 / 개
데이터시트 보기 →ATSAM3N2AA-MUR
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
ATSAM3N3AA-MUR
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
ATSAM3N0AA-MUR 최대 정격 & 전기적 특성
| Core Processor | ARM Cortex-M3 |
| Core Size | 32-Bit Single-Core |
| 최대 클록 주파수 | 48 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 32 KB (32K x 8) |
| SRAM Size | 8 KB |
| Peripherals | DMA, PWM, WDT |
| 패키지 | 48-QFN (7x7 mm) Exposed Pad |
| 실장 유형 | Surface Mount |
| 동작 온도 | -40C to +85C (Industrial) |
| Series | SAM3N |
| 데이터 버스 폭 | 32 bit |
| RoHS 상태 | Compliant (Green package per Mouser listing) |
| Packaging | Tape & Reel (TR) |
| Product Status | Active |
ATSAM3N0AA-MUR 48-qfn (7x7 mm) exposed pad 핀 구성 가이드
ATSAM3N0AA-MUR(48-qfn (7x7 mm) exposed pad 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: ATSAM3N0AA-MUR.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ATSAM3N0AA-MUR 적합 용도: 6 애플리케이션s: Industrial Automation Nodes, Consumer Appliance Control, Sensor Hubs and Data Acquisition, Metering and Utility Front Ends, Motor and Lighting Control, Portable and Battery-Operated Devices.
Industrial Automation Nodes
The ATSAM3N0AA-MUR fits industrial automation nodes because its industrial temperature grade (-40C to +85C), watchdog timer, and DMA-driven peripherals meet the reliability and real-time requirements of factory-floor equipment. A typical node uses the Cortex-M3 core at 48 MHz to poll sensors, service a PWM stage for actuators, and buffer data via DMA without CPU intervention, reducing jitter in control loops. Placed on a compact 48-QFN footprint, the MCU keeps board area small for distributed I/O modules. The watchdog timer guarantees autonomous recovery from software faults, and the 32 KB flash accommodates protocol stacks for Modbus RTU or simple fieldbus slaves.
추천
Consumer Appliance Control
Consumer appliance control boards - coffee machines, fans, small pumps - benefit from the ATSAM3N0AA-MUR's balance of cost and capability. The 48 MHz Cortex-M3 core runs user-interface code and control loops with headroom, while PWM outputs directly drive motor drivers, heater triac triggers, or LED dimming stages. The DMA controller streams ADC samples into the 8 KB SRAM so button debouncing and display refresh proceed in parallel. At a distributor floor price near $1.25 (as of 2026-09-19), the device is cost-competitive in volume. The green RoHS 48-QFN package suits reflow assembly, and the 32 KB flash stores UI logic, calibration tables, and fault logs comfortably.
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Sensor Hubs and Data Acquisition
In sensor hub designs, the ATSAM3N0AA-MUR aggregates multiple analog and digital sensor streams. The DMA controller moves ADC conversion results into the 8 KB SRAM buffer at fixed intervals, keeping the 48 MHz Cortex-M3 free for filtering, averaging, and threshold detection. The nested vectored interrupt controller gives deterministic latency for time-critical sampling interrupts. Because the hub often sleeps between samples, the SAM3N power-management features allow peripheral clock gating to reduce average current in battery-backed installations. The 48-QFN (7x7 mm) package exposes enough GPIO for I2C, SPI, and UART sensor buses simultaneously, and the industrial temperature rating supports outdoor and equipment-mounted deployments.
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Metering and Utility Front Ends
Metering front ends - energy, water, and flow meters - use the ATSAM3N0AA-MUR for sampling and computation. The DMA plus ADC path captures measurement samples into SRAM continuously, while the 32-bit core performs RMS, energy accumulation, and linearization arithmetic more efficiently than 8-bit alternatives. Watchdog supervision meets utility-equipment expectations for unattended reliability across the -40C to +85C industrial range. Firmware including calibration and communication routines fits in 32 KB flash; designs needing logging headroom can drop in the pin-compatible ATSAM3N1AA-MUR or ATSAM3N2AA-MUR without PCB changes. The exposed-pad QFN improves thermal and ground performance on the measurement PCB.
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Motor and Lighting Control
The ATSAM3N0AA-MUR's PWM channels make it a compact controller for small motor drives and LED lighting systems. At 48 MHz, the Cortex-M3 executes closed-loop speed or current control at multi-kilohertz update rates with deterministic interrupt latency from the NVIC. PWM outputs drive MOSFET gate drivers or LED strings directly at the logic level, and the watchdog timer provides fail-safe shutdown if firmware stalls - important in luminaires and pumps. The 8 KB SRAM buffers telemetry for UART reporting to a host. The 48-QFN (7x7 mm) package integrates into compact driver boards, and the same footprint scales upward to ATSAM3N2AA-MUR if field-updatable feature sets grow.
추천
Portable and Battery-Operated Devices
Battery-operated products such as handheld meters, remotes, and portable instruments use the ATSAM3N0AA-MUR for its power-managed Cortex-M3 architecture. Peripherals can be individually clock-gated, and the core can enter low-power wait states between events, stretching battery life in duty-cycled applications. Wake-up interrupts from the NVIC or peripheral events return the 48 MHz core to active execution quickly, so the device reacts instantly to button presses or sensor triggers. The 8 KB SRAM holds state across sleep periods, and the 32 KB flash retains firmware and calibration without external memory. The compact 7x7 mm 48-QFN suits slim handheld enclosures and two-layer PCBs.
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추천 제품 요약
엔지니어링 참조 데이터: ATSAM3N0AA-MUR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ATSAM3N1AA-MUR | ATSAM3N0BA-MUR | ATSAM3N2AA-MUR | ATSAM3N3AA-MUR |
|---|---|---|---|---|---|
| Package | 48-QFN (7x7 mm) Exposed Pad | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit | ARM Cortex-M3, 32-bit |
| Max Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 32 KB | 64 KB | 64 KB | 128 KB | 192 KB |
| SRAM | 8 KB | 12 KB | 12 KB | 24 KB | 24 KB |
| Peripherals | DMA, PWM, WDT | DMA, PWM, WDT | DMA, PWM, WDT | DMA, PWM, WDT | DMA, PWM, WDT |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Lifecycle Status | Active | Active | Active | Active | Active |
주요 차별점
- Lowest cost entry point in the 48-QFN SAM3N family (vs ATSAM3N1AA-MUR)
- ARM Cortex-M3 performance in a compact 7x7 mm QFN (vs ATMEGA8A-MUR)
- DMA offload reduces CPU burden versus DMA-less competitors (vs ATSAM3N0BA-MUR)
설계 노트
Estimated: budget supply decoupling with at least one 100 nF ceramic capacitor per VDD pin pair placed within 2 mm of the package, plus a bulk 10 uF capacitor near the 48-QFN exposed pad, which must be soldered to a ground pour for both thermal and ground integrity. Verify the exact VDD/VDDIO supply domains and voltage ranges in the SAM3N datasheet electrical characteristics chapter before finalizing the power tree, as the verified web data does not specify the supply voltage range for this exact part.
The exposed pad on the 48-QFN (7x7 mm) package should connect to a solid ground plane through an array of thermal vias (typically 3x3 or 4x4 at 1 mm pitch). This improves heat spreading during reflow and lowers junction-to-ambient thermal resistance in continuous operation. Follow Microchip's QFN land-pattern recommendations: slightly oversized pads with solder-mask-defined openings help solder wicking and inspection. Keep the SWDIO/SWCLK debug traces short and reserve test points for programming access in production fixtures.
The 32 KB flash fills quickly once a bootloader plus a communication stack is added - keep a flash budget map during development. Note that higher-memory SAM3N variants (ATSAM3N1AA/2AA/3AA) share the same 48-QFN footprint, so leave your BOM open to upgrade without a PCB respin. Also remember the -MUR suffix defines industrial temperature and tape-and-reel packing; ordering the -MUT or other suffix variants changes packing, not silicon. Always program the watchdog period conservatively to avoid spurious resets during flash self-write operations.
규정 준수 정보
Mouser lists the package as GREEN (Microchip green/RoHS-compliant, halogen-free packaging). REACH and conflict-minerals status not stated in verified data.