ATSAM3U1EA-AU - 96MHz Cortex-M3 MCU | Microchip | Industrial Control
MPN: ATSAM3U1EA-AU ✓ فعالATSAM3U1EA-AU نمای کلی
What is a 32-bit ARM Cortex-M3 microcontroller? It is an embedded processor family based on the ARM Cortex-M3 RISC core, combining deterministic control processing, Flash program memory, SRAM, and peripherals on one integrated device. In the system hierarchy, it is an MCU, an embedded-control semiconductor, and a member of the wider semiconductor and industrial-control component categories. Its 96 MHz maximum operating speed provides headroom for protocol handling, control loops, and moderate real-time workloads.
The verified device data identifies a 64 KB 64K x 8 Flash configuration, 20 KB SRAM, single-core operation, and a 144-LQFP package. The SAM3U family is documented with a Cortex-M3 revision 2.0 core, Memory Protection Unit support, and the Thumb-2 instruction set. These features make the device useful where a compact, single-chip control solution is preferred over a separate processor, memory, and peripheral arrangement.
The ATSAM3U1EA-AU can serve as the central controller in industrial automation, communication-enabled embedded equipment, consumer devices, and medical-device control modules. Its 1.62 V to 3.6 V operating-supply range, reported in the verified Microchip USA listing, is suitable for low-voltage embedded systems. The 144-pin LQFP package also exposes a broad set of I/O and peripheral connections for external sensors, actuators, memory, and communication interfaces.
Designers should verify the exact peripheral allocation, pin multiplexing, electrical limits, clock configuration, and programming requirements against the official Atmel datasheet before layout release. The LQFP footprint and 96-pin package body require careful fanout planning, adequate power decoupling, and thermal review. Firmware support should also be selected for the SAM3U device and the chosen development toolchain.
This product summary combines verified distributor and manufacturer-linked information with practical sourcing and design context. It is intended to help engineers identify the correct MCU, locate the datasheet, assess package fit, and move to a controlled hardware and firmware validation process.
جایگزین‌های drop-in برای ATSAM3U1EA-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 ATSAM3U1EA-AU (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, SRAM, Memory Protection Unit, USB, Instruction Set.
ATSAM3U2EA-AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3U4EA-AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3U1EA-CU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3U1EA-AU حداکثر مقادیر مجاز و مشخصات الکتریکی
| Product Type | 32-bit ARM Cortex-M3 Flash microcontroller |
| Maximum CPU Frequency | 96 MHz |
| CPU Core | ARM Cortex-M3 revision 2.0 |
| Architecture | 32-bit single-core RISC |
| Embedded Flash Memory | 64 KB (64K x 8) |
| SRAM | 20 KB |
| ولتاژ تغذیه کاری | 1.62 V to 3.6 V |
| Instruction Set | Thumb-2 |
| Memory Protection Unit | Supported |
| Flash Access | 128-bit wide access; memory accelerator and dual bank are listed for the SAM3U family |
| External Bus | Supported by the SAM3U family |
| USB | High Speed USB Device Port with embedded transceiver is listed for the SAM3U family |
| MCI Interface | High Speed MCI for SDIO/SD/MMC is listed for the SAM3U family |
| بسته‌بندی | 144-LQFP, 20 x 20 mm |
| نوع نصب | Surface mount |
| وضعیت RoHS | unknown |
| REACH Status | unknown |
| Lifecycle Stage | Active |
راهنمای پیکربندی پین ATSAM3U1EA-AU 144-lqfp, 20 x 20 mm
پیکربندی پین برای ATSAM3U1EA-AU (پکیج 144-lqfp, 20 x 20 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 ATSAM3U1EA-AU.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
ATSAM3U1EA-AU مناسب است برای 6 کاربردs: Industrial Automation Controller, Connected Embedded Equipment, Medical Device Control Module, Consumer Electronics Controller, Sensor and Actuator Hub, Data Acquisition and Storage.
Industrial Automation Controller
ATSAM3U1EA-AU fits compact industrial automation modules that need a deterministic 32-bit control core, local program memory, and integrated peripherals. Its 96 MHz Cortex-M3 processor can execute control logic while the 64 KB Flash stores application code and the 20 KB SRAM supports working buffers. The 144-LQFP package provides a broad connection surface for digital inputs, outputs, sensors, actuators, and communication transceivers. Designers should use the official SAM3U pin table to assign multiplexing and validate timing, electrical levels, isolation, protection, and EMC requirements for the target machine.
پیشنهادی
Connected Embedded Equipment
The ATSAM3U1EA-AU can serve as the control processor in connected equipment that combines local real-time behavior with USB or serial communications. The SAM3U family documentation identifies a High Speed USB Device Port with embedded transceiver and a High Speed MCI interface for SDIO, SD, or MMC storage. A 96 MHz Cortex-M3 core leaves processing capacity for protocol handling and application logic, while the 64 KB Flash and 20 KB SRAM constrain firmware size. Validate the exact peripheral pins, USB electrical requirements, memory usage, and device firmware support before schematic release.
پیشنهادی
Medical Device Control Module
ATSAM3U1EA-AU may be evaluated for low-voltage medical-device control modules where a compact 32-bit MCU, local Flash, and SRAM are useful. Its Cortex-M3 revision 2.0 core and Thumb-2 instruction set support embedded control software, while the 1.62 V to 3.6 V supply range fits low-voltage systems. Medical use is application-dependent and must not be inferred from the MCU feature set alone. Developers must complete risk analysis, verify applicable medical standards, define failure-safe behavior, validate electrical isolation and EMC, and confirm that the selected regulatory and quality requirements are met.
پیشنهادی
Consumer Electronics Controller
ATSAM3U1EA-AU is suitable for consumer products requiring compact embedded control, local Flash, and a broad package interface. A 96 MHz Cortex-M3 processor can coordinate user inputs, display or indicator control, sensor handling, and communications while the 64 KB Flash limits application code and the 20 KB SRAM supports runtime data. The 144-LQFP package is advantageous when a design has many external signal connections, but its lead pitch and fanout require deliberate PCB planning. Validate standby behavior, clock sourcing, peripheral multiplexing, thermal performance, and production test coverage against the product requirements.
پیشنهادی
Sensor and Actuator Hub
ATSAM3U1EA-AU can act as a local hub for sensors, actuators, and machine-facing I/O in an embedded control product. The Cortex-M3 core supports real-time acquisition and control logic, while the SAM3U family documentation identifies an external bus capability for connected system elements. The 144-LQFP package exposes many pins, but actual peripheral multiplexing must be selected in firmware and confirmed by the device datasheet. Keep power and signal returns short, add protection for exposed lines, and validate timing margins under the worst-case load and environmental conditions.
پیشنهادی
Data Acquisition and Storage
ATSAM3U1EA-AU is a candidate for compact data-acquisition systems that need local control, Flash-resident firmware, and access to storage or external bus resources. The SAM3U family includes a High Speed MCI interface for SDIO, SD, and MMC, which can support removable or embedded storage when the exact peripheral pins are available on the selected device. The 96 MHz core can process samples and manage control flow, but memory bandwidth and firmware buffering should be measured. Confirm voltage compatibility, file-system requirements, data integrity behavior, and connector protection before deployment.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ATSAM3U1EA-AU — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ATSAM3U2EA-AU | ATSAM3U4EA-AU | ATSAM3U1EA-CU |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
تفاوت‌های کلیدی
- Lower Flash footprint for applications that do not require larger local code storage (در مقابلATSAM3U2EA-AU)
- Lower verified memory configuration (در مقابلATSAM3U4EA-AU)
- Same-package family continuity (در مقابلATSAM3U1EA-CU)
یادداشت‌های طراحی
Start the power design by confirming the 1.62 V to 3.6 V operating-supply range against every I/O and peripheral requirement in the official SAM3U datasheet. Place the required supply and bypass capacitors close to the associated power pins, keep the return path continuous, and avoid routing high-current or switching signals through the same paths as sensitive control inputs. The supplied data does not include capacitor values, so component sizing must use the manufacturer’s recommended application circuit and the final clock and peripheral configuration.
The 144-LQFP package requires careful fanout and assembly planning. Confirm pin-1 orientation, pad geometry, solder mask, paste pattern, and courtyard clearance using the official package drawing; do not derive pad dimensions from the distributor description. Route high-speed communication and clock-capable signals with short returns, keep switching-node copper away from analog or sensing paths, and validate the stack-up, impedance, and via strategy with the board fabrication team before release.
Do not treat ATSAM3U1EA-AU, ATSAM3U2EA-AU, or ATSAM3U4EA-AU as interchangeable solely because the distributor pages list the same 144-LQFP package. Flash capacity, SRAM, peripheral availability, pin multiplexing, clock behavior, and firmware support must be compared using the official device tables. In particular, the verified data shows 64 KB Flash for ATSAM3U1EA-AU, 128 KB for ATSAM3U2EA-AU, and 256 KB for ATSAM3U4EA-AU, which can change both software and system requirements.
اطلاعات انطباق
The supplied verified data does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Compliance must be confirmed from the current manufacturer product documentation or supplier certificates.