ATSAM3N0BA-AUR - 48MHz Cortex-M3 MCU | Microchip | LQFP-64
MPN： ATSAM3N0BA-AUR ✓ 啟用中ATSAM3N0BA-AUR 概覽
A microcontroller is a programmable semiconductor that integrates a processor core, program memory, data memory, peripherals, and communication interfaces onto one device. The ATSAM3N0BA-AUR belongs to the SAM3N hierarchy of ARM Cortex-M3 microcontrollers, combining a 32-bit RISC architecture with embedded serial connectivity. This product type serves as the central control element in systems requiring local sensing, actuator control, protocol management, and deterministic software execution.
The principal features of the ATSAM3N0BA-AUR include a 48 MHz Cortex-M3 core, 32 KB Flash, 8 KB SRAM, and an operating-voltage range of 1.62 V to 3.6 V. Its communication peripherals include I2C, IrDA, SPI, and UART/USART, while the 64-LQFP package provides 64 surface-mount leads. These characteristics support designs that need moderate processing performance and several serial interfaces without requiring a larger external memory arrangement.
The SAM3N0B device combines a high-performance 32-bit ARM Cortex-M3 RISC processor with integrated embedded resources. Its 32 KB Flash stores firmware, while the 8 KB SRAM supports working variables, stack operations, protocol buffers, and application state. A 48 MHz operating frequency gives the processor substantially more instruction throughput than an 8-bit controller while retaining the simplicity of a microcontroller-centered architecture.
Typical applications include industrial sensor hubs, serial-to-ethernet gateway controllers, compact medical-device controllers, consumer interface modules, and communication equipment. The UART/USART and SPI interfaces suit sensor and display peripherals, while I2C accommodates lower-speed sensors and configuration devices. IrDA support can also simplify short-range infrared communication designs where an optical transceiver is paired with the MCU.
A critical design consideration is supply-voltage margin. The device operates from 1.62 V to 3.6 V, so the regulator, decoupling network, and peripheral rails must remain inside that range. Place the MCU supply and ground connections according to the manufacturer package guidance, preserve the exposed routing access of the LQFP footprint, and validate signal levels before connecting non-3.3 V peripherals.
This page combines the ATSAM3N0BA-AUR specifications, package information, application guidance, verified drop-in comparison, and practical design notes into one engineering-focused reference. It also distinguishes confirmed device attributes from parameters that require confirmation against the manufacturer datasheet before schematic release or PCB sign-off.
直接替換替代品，適用於 ATSAM3N0BA-AUR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAM3N0BA-AUR （相同外形與佔位） — 差異在於 Flash Memory, Package, SRAM.
ATSAM3N0BA-AUR 最大額定值與電氣特性
| Product Type | 32-bit ARM Cortex-M3 microcontroller |
| Processor Core | ARM Cortex-M3 RISC processor |
| CPU Frequency | 48 MHz |
| Flash Memory | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Operating Voltage | 1.62 V to 3.6 V |
| I/O Voltage | 1.62 V to 3.6 V |
| Serial Interfaces | I2C, IrDA, SPI, UART/USART |
| Architecture | 32-bit |
| 封裝 | 64-LQFP (10 mm x 10 mm) |
| 腳位數 | 64 pins |
| 安裝類型 | Surface mount |
| Terminal Form | Gull wing |
| Temperature Grade | Industrial |
| Packaging Format | Tape and reel |
| Case Code | LFQFP |
ATSAM3N0BA-AUR lfqfp 腳位配置指南
ATSAM3N0BA-AUR（lfqfp 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATSAM3N0BA-AUR.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAM3N0BA-AUR 適用於 6 應用s: Industrial Sensor Hub, Medical Device Controller, Serial Communication Gateway, Consumer Interface Module, LED Lighting Controller, Portable Data Acquisition Unit.
Industrial Sensor Hub
The ATSAM3N0BA-AUR fits an industrial sensor hub that aggregates measurements from several serial sensors. Its 48 MHz ARM Cortex-M3 core provides more processing headroom than an 8-bit controller, while I2C and SPI suit sensors with different bus requirements. The 32 KB Flash can hold application firmware, configuration logic, and update routines, and the 8 KB SRAM supports working buffers. With UART/USART available, the hub can pass processed data to a local gateway. Keep the 1.62 V to 3.6 V supply within the manufacturer limits and isolate industrial transients before they reach the MCU pins.
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Medical Device Controller
The ATSAM3N0BA-AUR can serve as the local controller in a compact medical device where sensor acquisition, user-interface management, and communication functions share one processor. The Cortex-M3 architecture executes the control logic at 48 MHz, while I2C and SPI support compatible sensors and memory devices. Its 8 KB SRAM provides space for status variables and protocol buffers, and the 32 KB Flash supports embedded firmware. UART/USART or IrDA can support host communication. For medical designs, verify electrical limits, reliability expectations, external component requirements, and applicable product certifications with the manufacturer before use.
推薦
Serial Communication Gateway
The ATSAM3N0BA-AUR is appropriate for a compact serial gateway that converts device traffic between UART/USART, SPI, and I2C domains. Its 48 MHz 32-bit core can handle framing, protocol conversion, buffering, and status reporting without a separate processor. The available 32 KB Flash provides room for gateway firmware, while 8 KB of SRAM can hold active frames and state. A serial-to-network design may also use IrDA for a short-range infrared link. Validate baud-rate support, peripheral multiplexing, and timing behavior against the manufacturer datasheet because those detailed limits are not summarized on this page.
推薦
Consumer Interface Module
The ATSAM3N0BA-AUR can control a compact consumer interface module containing buttons, indicators, sensors, and a serial host connection. The 48 MHz Cortex-M3 core supports responsive menu handling and device-state logic, while I2C connects suitable sensors and SPI connects higher-speed peripherals. With 32 KB of Flash and 8 KB of SRAM, the device supports moderate embedded applications without an external memory bus. Use UART/USART for a host connection and IrDA when an optical interface is required. Confirm package pin multiplexing and peripheral electrical limits before assigning every connector and sensor.
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LED Lighting Controller
The ATSAM3N0BA-AUR can serve as the logic controller in an LED lighting module that combines local dimming commands, status feedback, and serial configuration. The 48 MHz processor provides sufficient instruction throughput for timing, control-state management, and communication handling, while the 32 KB Flash stores application code and the 8 KB SRAM stores operating parameters. SPI or I2C can connect compatible LED drivers, and UART/USART can accept external lighting commands. The 1.62 V to 3.6 V operating range simplifies integration with low-voltage digital systems, provided the selected LED-driver interface levels match the MCU supply.
推薦
Portable Data Acquisition Unit
The ATSAM3N0BA-AUR suits a portable acquisition unit that gathers sensor data and manages local storage or host communication. The 48 MHz Cortex-M3 core can execute sampling coordination, filtering, and packet preparation, while SPI supports higher-speed acquisition or storage components and I2C supports lower-speed sensors. The 8 KB SRAM accommodates active records and protocol state, and 32 KB of Flash stores firmware. UART/USART or IrDA can provide a local link to a host or service interface. Power-system design must keep the MCU rail between 1.62 V and 3.6 V and account for dynamic load variation caused by wireless or storage activity.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM3N0BA-AUR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAM3N0BA-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 64-LQFP (10 mm x 10 mm) | 64-LQFP - same package |
| Processor Core | ARM Cortex-M3 RISC | ARM Cortex-M3 RISC |
| CPU Frequency | 48 MHz | 48 MHz |
| Flash Memory | 32 KB | 32 KB |
| SRAM | 8 KB | 8 KB |
| Operating Voltage | 1.62 V to 3.6 V | 1.62 V to 3.6 V |
| Pin Count | 64 pins | 64 pins |
主要差異化特點
- Identical core and memory configuration in the confirmed alternative (對比ATSAM3N0BA-AU)
- Same 64-LQFP mechanical footprint (對比ATSAM3N0BA-AU)
- Identical documented operating-voltage range (對比ATSAM3N0BA-AU)
設計說明
Design the MCU power rail for the full 1.62 V to 3.6 V operating range and verify every peripheral's input threshold against the selected voltage. Place the principal supply bypass capacitor close to the device power pins, preserve the manufacturer's recommended ground-return arrangement, and use additional local decoupling where a switching peripheral creates high-current transients. Do not assume that the MCU's nominal 3.3 V use permits uncontrolled signal excursions outside the documented limits.
Use the manufacturer LQFP-64 land pattern and verify pin-one orientation against the package drawing before fabrication. A 10 mm by 10 mm LQFP has fine-pitch leads and requires careful pad geometry, solder mask definition, and paste control. Place decoupling and support components away from the underside of the device so assembly inspection and rework remain practical.
Group the pins by function before assigning the PCB: keep serial interfaces near their associated connectors or devices, place clock and sensitive signal routes away from fast digital edges, and provide short ground returns for interface returns. Because the MCU combines multiple serial functions, review alternate-function assignments in the pin table and avoid routing unused pins into locations that would create difficult signal-integrity or rework issues.
Do not confuse the ATSAM3N0BA-AU ordering variant with ATSAM3N0BA-AUR without checking the manufacturer's ordering guide. Both are identified as 64-LQFP devices in the product comparison, but suffix differences can affect packing, temperature grade, or procurement terms. Confirm the exact ordering code, lifecycle status, and package drawing before releasing a production BOM or creating substitute components.
合規資訊
The manufacturer product documentation should be consulted for environmental, material, and automotive qualification declarations. No compliance claim is inferred from the industrial temperature-grade listing.