ATSAM3N1CB-AU - 48MHz Cortex-M3 MCU 64KB Flash | Microchip
MPN: ATSAM3N1CB-AU ✓ فعالATSAM3N1CB-AU نمای کلی
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.
جایگزین‌های drop-in برای ATSAM3N1CB-AU — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای ATSAM3N1CB-AU (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Packaging, Package, Program Memory Size, Core Processor, Instruction Set.
ATSAM3N1CA-AU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3N1CB-AUR
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3N0CB-AU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAM3N0CA-AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3N2CB-AU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAM3N4CB-AU
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAM3N1CB-AU حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Processor | ARM Cortex-M3 |
| Core Size | 32-Bit |
| حداکثر فرکانس کلاک | 48 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 64KB (64K x 8) |
| Series | SAM3N |
| ولتاژ تغذیه | 1.8V / 2.5V / 3.3V |
| بسته‌بندی | 100-LQFP (14x14 mm) |
| نوع نصب | Surface Mount |
| Instruction Set | RISC |
| وضعیت RoHS | Compliant |
| Packaging | Tray |
راهنمای پیکربندی پین ATSAM3N1CB-AU 100-lqfp (14x14 mm)
پیکربندی پین برای ATSAM3N1CB-AU (پکیج 100-lqfp (14x14 mm)). این IC دیجیتال شامل GPIO، رابط‌های ارتباطی (UART، SPI، I2C) و پین‌های تغذیه است. برای عملکردهای جایگزین پین و گزینه‌های پیکربندی به دیتاشیت سازنده مراجعه کنید. ضروری برای طراحی سیستم‌های نهفته و چیدمان PCB.
داده پین‌آوت تفصیلی موجود نیست برای ATSAM3N1CB-AU.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
ATSAM3N1CB-AU مناسب است برای 6 کاربردs: Industrial Automation Control Nodes, Consumer Appliance Control Boards, Embedded Sensing and Data Logging Modules, Motor Control and Drive Interface Logic, Building Automation and Security Panels, Portable and Battery-Powered Instruments.
Industrial Automation Control Nodes
The ATSAM3N1CB-AU fits industrial automation nodes where a 48 MHz Cortex-M3 core and 64KB flash are sufficient for control loops, Modbus-style UART communication, and digital I/O sequencing. Its 100-pin LQFP (14x14 mm) exposes ample GPIO for driving relays, reading limit switches, and interfacing multiple SPI/I2C sensors on one board. Operation from a 3.3V rail matches standard industrial logic levels, and the flash memory accommodates protocol stacks and bootloader code with headroom. Compared with an 8-bit MCU, the 32-bit core handles nested interrupts deterministically, improving scan-time consistency in PLC-adjacent subsystems and factory sensor aggregation modules.
پیشنهادی
Consumer Appliance Control Boards
Consumer appliance controllers - washing machines, rice cookers, air-conditioner indoor units - need a cost-optimized MCU with enough GPIO for keypads, displays, and motor drive signaling. The ATSAM3N1CB-AU provides this with a 48 MHz Cortex-M3 core, 64KB flash for control firmware and fault logging, and a 100-pin LQFP footprint that routes dozens of I/O lines without pin-multiplexing compromises. Its 1.8V/2.5V/3.3V supply flexibility allows direct interfacing with low-voltage display drivers. The flash architecture supports in-field firmware updates via a UART bootloader, reducing service costs. LCSC lists the part in stock at roughly $0.18 at volume as of 2026-09-19, meeting aggressive BOM cost targets.
پیشنهادی
Embedded Sensing and Data Logging Modules
Sensor aggregation and data-logging modules benefit from the ATSAM3N1CB-AU's combination of 64KB flash, a 48 MHz 32-bit core, and multiple serial interfaces routed on the 100-pin LQFP. SPI and I2C links connect ADCs, temperature, pressure, and humidity sensors, while a UART uploads data to a gateway. The Cortex-M3's nested vectored interrupt controller timestamps sensor events deterministically, important for event-sequence reconstruction in monitoring systems. The 3.3V operating rail matches most MEMS sensors directly, eliminating level-shift components. Firmware fits comfortably in 64KB, leaving space for wear-leveled flash logging routines and communications error handling.
پیشنهادی
Motor Control and Drive Interface Logic
In motor-driven products, the ATSAM3N1CB-AU serves as command and sequencing logic that feeds PWM signals to driver stages and reads encoder or hall-sensor feedback. The 48 MHz Cortex-M3 core executes timing-critical commutation sequences with predictable interrupt latency, and the 100-LQFP pin count lets designers dedicate ports to a full 3-phase PWM set plus fault and brake lines without heavy pin multiplexing. The 64KB flash holds FOC-lite or block-commutation algorithms plus a communication link to a supervisory controller. Supply operation at 3.3V matches gate-driver input thresholds; designers should add robust decoupling near the MCU to reject driver-stage switching noise.
پیشنهادی
Building Automation and Security Panels
Access-control panels, alarm keypads, and room controllers require an MCU with generous GPIO, serial interfaces for door hardware and network modules, and non-volatile program storage - all delivered by the ATSAM3N1CB-AU in its 100-pin LQFP (14x14 mm) package. The 48 MHz Cortex-M3 handles keypad scanning, LCD driving, buzzer timing, and RS-485 framing concurrently under interrupt control. The 64KB flash supports cryptographic-style challenge-response routines for simple credential checking, and the 3.3V rail integrates with standard building-automation logic. Its RoHS-compliant construction meets commercial-building procurement requirements, and distributor stocking (DigiKey, LCSC) supports both prototype and volume production runs.
پیشنهادی
Portable and Battery-Powered Instruments
Handheld meters, testers, and portable instruments leverage the ATSAM3N1CB-AU's 1.8V/2.5V/3.3V supply options, which permit operation directly from two-cell or single-cell-boosted battery rails. The 48 MHz Cortex-M3 core provides enough throughput for digital filtering of ADC streams, and the 64KB flash stores calibration tables plus UI firmware. The 100-pin LQFP supports a segment LCD interface, matrix keypad, USB-adjacent serial links via bridges, and multiple analog front-end control lines. Designers should exploit the MCU's low-power idle modes between measurements; the deterministic wake-up of the Cortex-M3 nested vectored interrupt controller makes sample scheduling straightforward without an external real-time kernel.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ATSAM3N1CB-AU — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ATSAM3N1CA-AU | ATSAM3N0CB-AU | ATSAM3N0CA-AU | ATSAM3N2CB-AU | ATSAM3N4CB-AU |
|---|---|---|---|---|---|---|
| Package | 100-LQFP (14x14 mm) | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) |
| Core / 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 | ARM Cortex-M3, 48 MHz |
| Flash Memory | 64KB (64K x 8) | 64KB | 32KB | 32KB | 128KB | 256KB |
| Supply Voltage | 1.8V / 2.5V / 3.3V | 1.8V / 2.5V / 3.3V | 1.8V / 2.5V / 3.3V | 1.8V / 2.5V / 3.3V | 1.8V / 2.5V / 3.3V | 1.8V / 2.5V / 3.3V |
| Packaging | Tray | Tray | Tray | Tray | Tray | Tray |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
تفاوت‌های کلیدی
- Doubled flash versus the ATSAM3N0 tier (در مقابلATSAM3N0CB-AU)
- Same package, zero-rework upward migration (در مقابلATSAM3N2CB-AU)
- Cost position versus top-of-family (در مقابلATSAM3N4CB-AU)
یادداشت‌های طراحی
Decouple every supply pin pair of the 100-LQFP package with a 100 nF ceramic capacitor placed within 2-3 mm of each pin, plus one bulk 4.7-10 uF capacitor near the part. Because the device accepts 1.8V, 2.5V, or 3.3V rails, ensure the selected rail stays within the datasheet tolerance under all load transients, and confirm I/O level compatibility with connected peripherals at the chosen voltage. Estimated: at 48 MHz with light I/O loading, core current is typically in the tens of milliamps range per SAM3N family behavior - verify against the manufacturer datasheet electrical characteristics table for your exact voltage and clock configuration.
Keep the SWD (serial wire debug) pads accessible on production boards - the Cortex-M3 SWDIO/SWCLK pair is the primary debug and recovery interface, and burying it under a connector or component makes rework after a failed flash operation very difficult. Route the SWD traces short and away from high dv/dt nets such as motor driver gate lines. Provide a programming header or tag-connect footprint compatible with SAM-BA UART recovery as a second-path fallback for field service.
A frequent mistake when migrating within the SAM3N family is assuming identical peripheral sets across ATSAM3N0/3N1/3N2/3N4 variants. While all share the 100-LQFP footprint and Cortex-M3 core, peripheral instances and pin-multiplex options differ. Before swapping a 3N0CB for the 64KB ATSAM3N1CB-AU (or vice versa), regenerate pin-mux configuration from the Microchip device header files and re-verify every alternate-function assignment. Also confirm the exact '-AU' temperature/speed grade suffix matches your environment, and review Microchip PCN notifications for lifecycle updates since this is a legacy Atmel-origin product line.
اطلاعات انطباق
RoHS compliance indicated by the green ('Grn') marking in the Utmel listing for SAM3N LQFP parts. Other compliance statuses not stated in provided data.