ATSAM3N4CA-AU - 48MHz Cortex-M3 256KB MCU | Microchip
MPN: ATSAM3N4CA-AU ✗ پایان تولیدATSAM3N4CA-AU نمای کلی
A microcontroller is a compact computer system built around a CPU core, nonvolatile program memory, volatile working memory, and integrated peripherals. The ARM Cortex-M3 core provides the instruction execution and interrupt-control foundation, while Flash stores firmware and SRAM supports runtime data. In the product hierarchy, ATSAM3N4CA-AU is a microcontroller, an embedded processor, and a semiconductor used for control-oriented electronic systems.
The verified feature data identifies an ARM Cortex-M3 revision 2.0 core running to 48 MHz, Thumb-2 instructions, a 24-bit SysTick counter, and a Nested Vector Interrupt Controller. The device also includes timer and counter resources, a 10-bit ADC described in the source material as up to 16 channels at 384 kSPS, and a second 10-bit ADC described as 1 channel at 500 kSPS. These resources support mixed control, measurement, timing, and signal-processing workloads.
The SAM3N series is described in the source material as pin-to-pin compatible with the SAM3S series, but a replacement still requires verification of memory size, peripheral availability, electrical limits, and software support. The ATSAM3N4CA-AU combines a relatively large 100-pin package with 79 I/O, making it appropriate for designs needing more external connections than a small-package MCU provides.
Typical uses include industrial control, data acquisition, communications equipment, timer-based control, and embedded control boards. The 48 MHz Cortex-M3 performance and 256 KB Flash capacity are useful for firmware that requires more memory and processing capability than a basic 8-bit controller, while the integrated ADC channels reduce the need for external analog converters.
When designing around this MCU, verify clock, power, analog-reference, and peripheral connections against the manufacturer datasheet before layout. Place decoupling capacitors close to the supply pins, route sensitive analog signals away from switching nodes, and confirm the exact 100-pin pinout. This product record distinguishes verified core, memory, package, and ADC facts from parameters that still require application-specific confirmation.
This page consolidates the available manufacturer and distributor references, evaluates possible drop-in alternatives, and highlights practical embedded-design checks beyond a basic distributor specification table.
جایگزین‌های drop-in برای ATSAM3N4CA-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 ATSAM3N4CA-AU (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Series, Instruction Set, Maximum Clock Speed, Package, Interrupt Controller.
ATSAM3N4CA-CU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3N4CA-AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3N4C-AU
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAM3N8CA-AU
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAM3S8CA-AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAM3U4CA-AU
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAM3N4CA-AU حداکثر مقادیر مجاز و مشخصات الکتریکی
| Product Type | 32-bit ARM Cortex-M3 Flash microcontroller |
| CPU Core | ARM Cortex-M3 revision 2.0 |
| Maximum CPU Frequency | 48 MHz |
| Instruction Set | Thumb-2 |
| Program Memory | 256 KB (256K x 8) Flash |
| RAM | 24 KB (24K x 8) SRAM |
| Number of I/O Pins | 79 |
| بسته‌بندی | 100-LQFP (14 x 14 mm) |
| نوع نصب | Surface mount |
| Oscillator Type | Internal |
| SysTick Counter | 24-bit |
| ADC | Up to 16 channels, 10-bit, 384 kSPS |
| ADC | 1 channel, 10-bit, 500 kSPS |
| Timer/Counter Resources | Three-channel 16-bit timer/counter with capture, waveform, compare, and PWM mode |
| PWM Resources | 4-channel 16-bit PWM |
| Real-Time Timer | 32-bit real-time timer and RTC with calendar and alarm |
| Package Pin Count | 100 pins |
| Program Memory Type | Flash |
| Manufacturer Series | SAM3N |
راهنمای پیکربندی پین ATSAM3N4CA-AU 100 pins
پیکربندی پین برای ATSAM3N4CA-AU (پکیج 100 pins). 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 ATSAM3N4CA-AU.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
ATSAM3N4CA-AU مناسب است برای 6 کاربردs: Industrial Control and Automation, Data Acquisition and Sensor Conditioning, Motor and PWM Control, Communications Equipment, Timing and Real-Time Control, Embedded System Prototyping.
Industrial Control and Automation
ATSAM3N4CA-AU fits industrial control tasks that need more processing headroom and external connectivity than a basic 8-bit MCU. Its verified 48 MHz ARM Cortex-M3 core can execute control logic, while 79 I/O pins provide substantial interface capacity. The four-channel 16-bit PWM resource is useful for actuator, motor, or timing-oriented functions, and the listed timer/counter features support periodic measurement and event handling. For a production design, verify supply voltage, isolation, EMC, environmental limits, and the exact peripheral pin map in the manufacturer datasheet.
پیشنهادی
Data Acquisition and Sensor Conditioning
The ATSAM3N4CA-AU is suitable for embedded data-acquisition systems because its verified feature summary identifies a 10-bit ADC with up to 16 channels at 384 kSPS, plus a separate 10-bit ADC described as one channel at 500 kSPS. The Cortex-M3 processor can perform filtering, calibration, state management, and communications alongside acquisition. Engineers should use short analog traces, defined grounding, reference-decoupling practices, and an input-protection network tailored to the sensor signals. Channel mapping, acquisition timing, and ADC electrical limits require confirmation from the exact datasheet.
پیشنهادی
Motor and PWM Control
ATSAM3N4CA-AU can serve as the control MCU for PWM-based motor, valve, lighting, or actuator systems. The verified feature data identifies four-channel 16-bit PWM and timer/counter functions with capture, waveform, compare, and PWM modes, providing the timing resources needed for deterministic output control. The 48 MHz ARM Cortex-M3 core can manage position or speed logic while the MCU handles communications and supervisory logic. Power-stage design must be handled separately, including gate drivers, current sensing, protection, thermal design, and safe shutdown behavior.
پیشنهادی
Communications Equipment
ATSAM3N4CA-AU is applicable to communications and protocol-handling equipment when a Cortex-M3 core and extensive I/O are more useful than a small 8-bit controller. The 256 KB Flash capacity provides room for networking stacks, configuration data, and application firmware, while the 24 KB SRAM supports runtime buffering and protocol state. The verified material does not list a specific Ethernet, USB, or wireless peripheral for this exact part, so the communication interface should be treated as an application-specific design item. Validate electrical levels, transceiver requirements, timing, and firmware support before release.
پیشنهادی
Timing and Real-Time Control
The ATSAM3N4CA-AU is a reasonable candidate for timing-sensitive embedded control because its verified features include a 24-bit SysTick counter, timer/counter blocks, waveform and compare functions, and a 32-bit real-time timer with calendar and alarm capabilities. These resources can organize periodic tasks, capture input timing, generate control waveforms, and maintain calendar-oriented events. Real-time performance depends on the selected clock tree, peripheral configuration, interrupt priorities, and worst-case firmware execution path. Confirm clock tolerances and timer limits in the manufacturer electrical and timing specifications.
پیشنهادی
Embedded System Prototyping
ATSAM3N4CA-AU can serve as the central processor for a prototype embedded control platform because it combines a 48 MHz Cortex-M3 core, 256 KB Flash, 24 KB SRAM, 79 I/O, timers, PWM, and ADC resources in one 100-LQFP device. The relatively high pin count supports external sensors, displays, communications, and power-control interfaces during development. Before layout, obtain the complete 100-pin map and confirm which signals are multiplexed, which are debug-related, and which supply or ground pins must be connected. Prototype firmware should also account for startup, clock initialization, and peripheral resource conflicts.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ATSAM3N4CA-AU — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ATSAM3N4CA | ATSAM3N4CA-AU | ATSAM3N4C-AU | ATSAM3N8CA-AU | ATSAM3S8CA-AU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-LQFP (14 x 14 mm) | 100-LQFP (14 x 14 mm) - same package family; exact suffix verification required | 100-LQFP (14 x 14 mm) - same package | 100-LQFP (14 x 14 mm) - same package family; exact suffix verification required | 100-LQFP (14 x 14 mm) - same package family; exact suffix verification required | 100-LQFP (14 x 14 mm) - same package family; pin map verification required |
تفاوت‌های کلیدی
- Cortex-M3 processing with 256 KB Flash and 24 KB SRAM (در مقابلATMEGA328-AU)
- High I/O count for control and acquisition (در مقابلSTM8L001J3M3)
- Integrated analog and timing resources (در مقابلATMEGA128-16ANR)
یادداشت‌های طراحی
Start the ATSAM3N4CA-AU layout from the exact manufacturer 100-LQFP pinout and place all required power and ground connections according to the device guidelines. Keep high-current return paths compact and provide local decoupling near every supply pin. Because the available data confirms a 14 x 14 mm package but not the complete pin names, do not finalize a footprint-dependent routing plan until the official pin map is checked. Also confirm exposed-pad requirements, if any, against the exact package drawing.
The verified peripheral set includes ADC channels, timers, PWM, and communications-related embedded resources, so analog and digital routing should be separated early. Route sensitive analog inputs away from PWM edges, clock lines, inductors, and high-current return paths. Use a quiet analog ground strategy and follow the datasheet's analog-reference and bypass recommendations. Confirm ADC input impedance and sample-time requirements before adding source impedance; otherwise the acquisition accuracy may be limited by the sensor or signal-conditioning network.
Do not treat a same-package MPN or a family-level cross-reference as proof of drop-in compatibility. The supplied cross-reference material mentions SAM3S-series pin-to-pin compatibility and includes ATSAM3U4CA-AU comparison results, but it does not establish exact electrical, memory, peripheral, and pin-function equivalence for each candidate. Before substitution, compare the datasheets, errata, package drawings, clock requirements, supply limits, and firmware support. This is especially important when the replacement changes a peripheral or memory resource used by production software.
ATSAM3N4CA-AU is a 48 MHz Cortex-M3 system, but its actual power consumption is not included in the verified data. Power planning must therefore be based on the manufacturer's operating-current and clock tables rather than the maximum frequency alone. Define clock, peripheral, I/O, and sleep states early, then budget regulator headroom for startup, transient loads, and temperature. Use measured board data for the final thermal and power design because I/O loading and external circuitry can materially change the result.
اطلاعات انطباق
The supplied verified data does not include authoritative RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. Confirm current compliance documents with Microchip or an authorized distributor.
