ATSAM3N0BA-AU - 48MHz Cortex-M3 32KB MCU | Microchip
MPN: ATSAM3N0BA-AU ✓ نشطATSAM3N0BA-AU نظرة عامة
A microcontroller is a programmable semiconductor that integrates a processor core, memory, peripherals, and communication interfaces on one device. Within the product hierarchy, the ATSAM3N0BA-AU is an ARM Cortex-M3 microcontroller, part of the broader embedded processor and embedded microcontroller categories. It is intended for compact embedded systems that require a 32-bit control architecture, serial connectivity, and economical integration on a board.
Key verified features include operation at up to 48 MHz, 32 KB of flash, the ARM Cortex-M3 Revision 2.0 core, and Thumb-2 instruction support. The SAM3N family also provides a high-speed USB interface with an integrated transceiver, supporting fast upload and download operations. Verified family information states that the SAM3N series is pin-to-pin compatible with SAM3S devices and certain SAM7S legacy products, enabling planned migration within the Atmel and Microchip ecosystem.
The SAM3N architecture targets cost-sensitive, high-volume embedded applications while combining a 32-bit core with integrated connectivity. Atmel Studio 7 and ASF3 provide configuration support, software libraries, example projects, and an established development environment. Because ATSAM3N0BA-AU is a 64-pin device, a PCB layout must preserve its 10 x 10 mm LQFP land pattern and provide the required USB, power, clock, debug, and peripheral connections.
Typical uses include USB-connected data acquisition, industrial control modules, compact human-interface devices, serial adapters, and cost-sensitive embedded control systems. USB is particularly useful where a device must enumerate as a peripheral, exchange configuration data, or support fast programming and data transfer. For designs requiring more flash, RAM, or peripheral density, engineers should evaluate the broader SAM3N family rather than assume a different-density device is electrically interchangeable.
The primary design consideration is validating the exact pin assignment, USB routing, decoupling, clock configuration, and programming interface against the manufacturer datasheet before layout release. USB signal integrity also depends on controlled-impedance routing and correct connector placement. This page consolidates verified distributor specifications, family-level migration information, pricing fields awaiting live quotation, and application-specific design guidance while clearly separating confirmed data from unavailable parameters.
بدائل مباشرة لـ ATSAM3N0BA-AU — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع ATSAM3N0BA-AU (نفس عامل الشكل والبصمة) — يختلف في Core Processor, Package, Supply Voltage Range, Flash Memory, Operating Temperature.
لا تتوفر بدائل متوافقة تمامًا لهذا المنتج.
اطلب بدائلATSAM3N0BA-AU الحدود القصوى والخصائص الكهربائية
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دليل تكوين أطراف ATSAM3N0BA-AU standard
تكوين الأطراف لـ ATSAM3N0BA-AU (حزمة standard). تتضمن هذه الدائرة المتكاملة الرقمية GPIO وواجهات الاتصال (UART وSPI وI2C) وأطراف الطاقة. راجع ورقة بيانات الشركة المصنعة لوظائف الأطراف البديلة وخيارات التكوين. ضرورية لتصميم الأنظمة المدمجة وتخطيط PCB.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ ATSAM3N0BA-AU.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
ATSAM3N0BA-AU مناسب لـ 6 التطبيقs: USB Data-Acquisition Module, Industrial Control Module, USB Human-Interface Device, Serial Communication Adapter, Cost-Sensitive Embedded Controller, Programmable Embedded Logger.
USB Data-Acquisition Module
The ATSAM3N0BA-AU fits compact USB data-acquisition modules because its 48 MHz ARM Cortex-M3 core can service serial transfers and embedded control tasks while the high-speed USB interface supports rapid upload and download operations. The 32 KB flash budget can hold a focused bootloader and acquisition firmware, although the exact SRAM and peripheral allocation must be verified before implementation. Designers should use a controlled-impedance USB route, place protection near the connector, and confirm the exact transceiver and VBUS requirements from the manufacturer datasheet. This arrangement simplifies tethered instrumentation by combining control, data transfer, and power in one standard USB connection.
موصى به
Industrial Control Module
The ATSAM3N0BA-AU is suitable for cost-sensitive industrial control modules that need deterministic 32-bit processing, serial connectivity, and a compact surface-mount footprint. Its Cortex-M3 core runs up to 48 MHz, while the 24-bit SysTick counter and Nested Vector Interrupt Controller support time-based control and interrupt-driven peripherals. The 32 KB flash requires disciplined code sizing, so the application should reserve space for diagnostics and field updates. Confirm the exact supply range, ADC resources, timers, and operating-temperature grade before assigning it to a production machine-control board.
موصى به
USB Human-Interface Device
The ATSAM3N0BA-AU can support a compact USB human-interface device combining device control, configuration exchange, and firmware updates. Its high-speed USB transceiver enables rapid interaction with a host, while the 48 MHz Cortex-M3 core provides enough headroom for protocol handling, status reporting, and local input processing. The 64-LQFP package leaves room for dedicated interface circuitry on a small board. Firmware should include enumeration-state handling, suspend behavior, descriptor updates, and bootloader protection, all verified against the exact ATSAM3N0BA-AU datasheet before release.
موصى به
Serial Communication Adapter
The ATSAM3N0BA-AU fits a serial communication adapter that combines embedded protocol conversion with a native high-speed USB interface. The ARM Cortex-M3 core can handle UART buffering, framing, device management, and host communication concurrently, while 32 KB of flash is suitable for a focused protocol stack rather than a large application. The design should verify which UART, SPI, and timer resources are available for the external serial port. Isolation, ESD protection, grounding, and cable-routing decisions depend on the connected equipment and are outside the MCU's specified capabilities.
موصى به
Cost-Sensitive Embedded Controller
The ATSAM3N0BA-AU targets cost-sensitive embedded systems that benefit from a 32-bit Cortex-M3 architecture without requiring a large high-end microcontroller. Its 48 MHz operating rate supports responsive control logic, the 32 KB flash limits firmware scope, and the 64-LQFP package provides a conventional manufacturing-friendly assembly option. For migration within the ecosystem, verified family information states that SAM3N devices are pin-to-pin compatible with SAM3S and certain SAM7S products. Designers should confirm exact package and peripheral equivalence rather than treating all family members as interchangeable.
موصى به
Programmable Embedded Logger
The ATSAM3N0BA-AU can serve as the control and USB-transfer core of a programmable embedded logger. Its 48 MHz Cortex-M3 core can sample enabled peripherals, timestamp events using SysTick, and transfer records through high-speed USB. The 32 KB flash must be balanced against event-processing code and update images, while actual data storage and logger endurance depend on external memory. Designers should validate ADC timing, available SRAM, write-cycle strategy, and USB throughput with representative workloads rather than relying only on nominal processor frequency.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ ATSAM3N0BA-AU — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج |
|---|---|
| Package | 64-LQFP (10 x 10 mm) |
| Brand | Microchip Technology |
| Processor Core | ARM Cortex-M3 Revision 2.0 |
| Maximum CPU Frequency | 48 MHz |
| Architecture | 32-bit ARM |
| Flash Memory | 32 KB (32K x 8) |
| Instruction Set | Thumb-2 |
| USB Capability | High-speed USB with integrated transceiver |
| System Timer | 24-bit SysTick Counter |
| Development Environment | Atmel Studio 7 and ASF3 |
أبرز الفروقات
- Native high-speed USB connectivity (مقابلGeneral-purpose ARM Cortex-M3 MCUs without a verified native high-speed USB interface)
- 32-bit control performance (مقابل8-bit AVR-class microcontrollers)
- Defined family migration path (مقابلStandalone MCU designs without documented SAM-family pin compatibility)
ملاحظات التصميم
Before PCB release, obtain the exact ATSAM3N0BA-AU 64-LQFP symbol and pin table from the manufacturer datasheet. The verified data confirms the 10 x 10 mm LQFP format but does not identify all 64 terminal assignments, exposed-pad requirements, or alternate-function constraints. Reuse only a verified library footprint, preserve pin-1 orientation, and check land-pattern dimensions against the package drawing rather than deriving them from a generic LQFP template.
Route high-speed USB as a controlled-impedance differential pair from the MCU to the connector, with minimal stubs and a continuous reference plane. Place USB protection and any required series termination close to the external connector, and keep switching regulators, crystals, and fast digital edges away from the USB pair. Exact trace impedance, spacing, and topology require board-stackup calculations and should be validated with the USB implementation guidance in the exact device documentation.
Use the manufacturer-recommended decoupling topology and voltage limits for all ATSAM3N0BA-AU supply pins. The supplied verified results do not state the supply range, maximum input voltage, or operating current, so these values must be obtained before the schematic is released. Place bulk and high-frequency decoupling close to the relevant pins, maintain a low-resistance ground return, and account for USB-attached power in the complete system power budget.
Do not infer that family-level pin compatibility guarantees that any ATSAM3S or SAM7S device is a drop-in replacement for ATSAM3N0BA-AU. Confirm package count and dimensions, USB transceiver details, memory resources, peripheral assignments, clocking, supply voltage, and firmware support individually. Keep the 32 KB flash constraint visible during architecture planning, including bootloader, USB descriptors, diagnostics, and update functionality, to avoid late firmware-size failures.
معلومات الامتثال
The supplied verified results do not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for ATSAM3N0BA-AU. AEC-Q100 is marked not applicable because no automotive qualification is identified and this is a general microcontroller.
