ATSAM3N0BA-MUR - 32-bit ARM Cortex-M3 MCU 48MHz 32KB | Microchip
Teilenummer: ATSAM3N0BA-MUR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.85 | $3,85 |
| 10 | $3.45 | $34,50 |
| 100 | $3.05 | $305,00 |
| 500 | $2.7 | $1.350,00 |
| 1.000 | $2.4 | $2.400,00 |
ATSAM3N0BA-MUR Übersicht
A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals, serving as the computational heart of embedded systems. Within the product hierarchy, the ARM Cortex-M3 core places the SAM3N in the 32-bit embedded microcontroller family, sitting above 8-bit MCUs in performance while consuming less power than higher-performance Cortex-M4 parts. The SAM3N family targets cost-sensitive, high-volume applications where integration and price dominate selection.
Key features of the ATSAM3N0BA include a single-core Cortex-M3 RISC processor running at 48 MHz, 32KB of embedded FLASH, 8KB of SRAM, and connectivity peripherals including I2C (TWI), SPI, UART/USART, and IrDA. The device operates from a 1.8V to 3.3V supply and is rated for industrial temperature environments, per the Mouser listing (QFN, GREEN, IND TEMP, MRL A).
Architecturally, the Cortex-M3 core features a 3-stage pipeline, Harvard bus structure, and a nested vectored interrupt controller (NVIC), enabling deterministic low-latency interrupt handling. The SAM3N0B integrates a power management controller with multiple sleep and wait modes, allowing designers to trade throughput for microamp-level standby current in battery-powered designs.
Typical applications include industrial sensors and control nodes, consumer appliance interfaces, and building automation or metering front-ends. The rich UART/SPI/I2C connectivity and low pin count cost profile make it a strong fit for communication bridges and peripheral controllers.
A key design consideration: the datasheet is published by Microchip (2018 revision referenced by FindIC), and the SAM3N series is pin-to-pin compatible with the SAM3S series, giving upgrade paths to parts with more FLASH and USB if requirements grow.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für ATSAM3N0BA-MUR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ATSAM3N0BA-MUR (gleiche Bauform und Footprint) – abweichend in Packaging, RoHS Status, Core Processor, Core Size, Maximum Clock Frequency.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATSAM3N0BA-MU
✅ Drop-In✓ Auf Lager
$0.98 / Stück
Datenblatt ansehen →ATSAM3N0AA-MUR
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$2 / Stück
Datenblatt ansehen →ATSAM3N1BA-MUR
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
ATSAM3N2BA-MUR
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
ATSAM3N4BA-MUR
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
ATSAM3S4BA-MUR
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
Preis auf Anfrage
Datenblatt ansehen →ATSAM3N0BA-MUR Grenzwerte & elektrische Eigenschaften
| Core Processor | ARM Cortex-M3 |
| Core Size | 32-Bit Single-Core |
| Maximale Taktfrequenz | 48 MHz |
| FLASH Program Memory | 32KB (32K x 8) |
| SRAM | 8KB |
| Versorgungsspannung | 1.8V / 3.3V (1.8V to 3.3V range) |
| Connectivity Peripherals | I2C, IrDA, SPI, UART/USART |
| Gehäuse | 64-QFN (9x9 mm) |
| Montageart | Surface Mount |
| Temperature Grade | Industrial |
| Packaging | Tape & Reel (T/R) |
| Green Status | GREEN (RoHS per Mouser GREEN indicator) |
ATSAM3N0BA-MUR 64-qfn (9x9 mm) Pinbelegungsleitfaden
Pinbelegung für ATSAM3N0BA-MUR (64-qfn (9x9 mm)-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für ATSAM3N0BA-MUR.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
ATSAM3N0BA-MUR ist geeignet für 6 Anwendungs: Industrial Sensor Nodes, Communication Bridges and Converters, Consumer Appliance Control, Building Automation and Metering Front-Ends, Portable and Battery-Powered Devices, Embedded Peripheral Controllers.
Industrial Sensor Nodes
The ATSAM3N0BA-MUR fits industrial sensor nodes where a 32-bit Cortex-M3 at 48 MHz processes sensor data locally while UART, SPI, and TWI/I2C interfaces connect to ADCs, transceivers, or field buses. Its 1.8V-3.3V supply range supports standard industrial 3.3V rails, and the SAM3N power management controller with sleep/wait modes keeps average current low between sampling events. The 64-QFN package provides enough GPIO for multiple sensor channels, and the industrial temperature grade matches factory-floor environments. Firmware for signal filtering and threshold detection fits comfortably in 32KB FLASH, making this a cost-optimized choice for high-volume deployments.
Empfohlen
Communication Bridges and Converters
UART-to-SPI, RS-485-to-I2C, and protocol-converter designs benefit from the ATSAM3N0BA-MUR's combination of UART/USART, SPI, and TWI/I2C peripherals plus IrDA support. The Cortex-M3 core handles byte-level protocol translation with predictable latency via its NVIC interrupt controller, while DMA-capable peripherals offload data movement. The 48 MHz clock gives ample headroom above typical bridge line rates, and 8KB SRAM buffers multi-frame transactions. In a 64-QFN industrial-grade package on Tape & Reel, the part supports automated assembly for building automation bridges and gateways produced in volume.
Empfohlen
Consumer Appliance Control
Cost-sensitive appliance control boards - coffee makers, fans, small HVAC interfaces - use the ATSAM3N0BA-MUR to combine touch-button scanning, display driving via SPI, and sensor polling in one 32-bit MCU. The GREEN/RoHS-style packaging aligns with consumer regulatory requirements, and the 64-QFN (9x9 mm) footprint suits single-sided cost-optimized PCBs. The 1.8V-3.3V operation pairs directly with coin-cell or mains-derived 3.3V supplies. Aggressive SAM3N pricing targets high-volume production, and pin compatibility across SAM3N memory variants lets manufacturers cost-down FLASH size after firmware freeze without board respins.
Empfohlen
Building Automation and Metering Front-Ends
Smart metering and building automation front-ends require reliable serial links (UART/USART for meters, TWI/I2C for peripherals, SPI for displays) and long service life - the ATSAM3N0BA-MUR provides all of these in an industrial temperature grade. Low-power modes extend battery backup or energy-harvesting budgets between wake events, and the Cortex-M3's 32-bit arithmetic supports CRC, energy summation, and tamper detection routines in firmware. The 64-pin QFN supplies sufficient GPIO for relay controls and LED indicators, while 32KB FLASH accommodates communication stacks for Modbus-style protocols at production-friendly cost.
Empfohlen
Portable and Battery-Powered Devices
Handheld instruments and portable devices exploit the SAM3N0BA's power management architecture: the Cortex-M3 executes bursts at 48 MHz then drops to low-power sleep, conserving battery capacity. The 1.8V minimum supply allows operation from two-series-cell or single-Li-cell rails through simple regulation. Peripherals including UART, SPI, and IrDA cover legacy IR links common in handheld test gadgets and remote controls. The 9x9 mm 64-QFN keeps board area compact for enclosure-constrained products, and 8KB SRAM handles user-interface state machines plus modest data logging between uploads over UART or USB-bridge dongles.
Empfohlen
Embedded Peripheral Controllers
The ATSAM3N0BA-MUR serves as a housekeeping controller in larger systems - managing fan control, front-panel UI, power sequencing, and chassis monitoring via SPI-connected sensors and UART links to host processors. The 32-bit core handles concurrent timed tasks with hardware timers, while interrupt-driven serial links keep host communication responsive. Industrial temperature rating suits telecom and server chassis environments, and the GREEN Tape & Reel packaging supports contract manufacturing. Its pin compatibility with larger SAM3N/SAM3S variants provides a documented escape hatch if the controller's role expands to include USB or higher-layer stacks.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ATSAM3N0BA-MUR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATSAM3N0BA-MU | ATSAM3N1BA-MUR | ATSAM3N4BA-MUR | ATSAM3S4BA-MUR |
|---|---|---|---|---|---|
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Clock | ARM Cortex-M3, 48 MHz | ARM Cortex-M3, 48 MHz | ARM Cortex-M3, 48 MHz | ARM Cortex-M3, 48 MHz | ARM Cortex-M3, 48 MHz |
| FLASH Memory | 32KB | 32KB | 64KB | 256KB | 256KB |
| Connectivity | I2C, IrDA, SPI, UART/USART | I2C, IrDA, SPI, UART/USART | I2C, IrDA, SPI, UART/USART | I2C, IrDA, SPI, UART/USART | Adds USB device, I2C, SPI, UART/USART |
| Packaging / Delivery | Tape & Reel (T/R) | Tray | Tape & Reel | Tape & Reel | Tape & Reel |
| Relative Cost | Baseline (entry FLASH size) | Same die, tray (lower handling cost) | Slightly higher (2x FLASH) | Higher (8x FLASH) | Highest (256KB + USB) |
Wichtigste Unterscheidungsmerkmale
- Lowest-cost FLASH entry point of the 64-QFN SAM3N family (vs. ATSAM3N4BA-MUR)
- Pin-to-pin migration to SAM3S for USB (vs. ATSAM3S4BA-MUR)
- Tape & Reel for high-volume automation (vs. ATSAM3N0BA-MU)
Designhinweise
The ATSAM3N0BA-MUR operates from a 1.8V to 3.3V single supply. Place 100 nF ceramic decoupling capacitors at every VDD/VDDIO pin pair plus one bulk 4.7-10 uF capacitor near the regulator input, per standard Microchip SAM3N layout guidance. If VDDCORE is externally supplied, follow the datasheet's core-supply sequencing guidance - the SAM3N uses an internal regulator on some variants, so verify the specific SAM3N0B power tree in the official datasheet before routing power.
The 9x9 mm 64-QFN has a center exposed pad that should be soldered to a grounded copper pour with an array of thermal vias, both for heat dissipation and for a solid ground reference. Use the QFN's fine-pitch pad geometry consistent with standard 0.5 mm pitch QFN land patterns; verify exact pad dimensions against the Microchip drawing. Keep the SWD programming header routed to 4 test points (SWDIO, SWCLK, RESET, GND) for in-circuit flash programming via SAM-ICE/Atmel-ICE.
A frequent pitfall is firmware assuming more than 32KB FLASH - the ATSAM3N0BA is the entry memory point of the SAM3N family. If code size creeps past ~28KB, plan the migration to the pin-compatible ATSAM3N1BA/2BA/4BA early. Also confirm the exact revision of the SAM3N datasheet (FindIC references a 2018-01-23 publication) before finalizing ADC and timer peripheral configurations, as multiplexing tables differ between 64-pin and smaller packages.
Compliance-Informationen
Mouser lists the ATSAM3N0BA-MUR as GREEN with MRL A moisture rating. Full RoHS/REACH certificates should be obtained from Microchip's official compliance portal.
