ATSAM3X2CA-AU - 84MHz 32-Bit ARM MCU | Microchip Technology
部品番号: ATSAM3X2CA-AU ✓ 生産中ATSAM3X2CA-AU 概要
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals on one device. The ATSAM3X2CA-AU is therefore a microcontroller, an embedded controller, a semiconductor, and a member of the broader industrial-control and embedded-processing categories. Its 84 MHz operating speed supports responsive control loops and real-time embedded tasks, while the 1.62 V to 3.6 V operating range permits integration with low-voltage digital systems.
The verified product information identifies the device as a 36K x 8-bit RAM device in the SAM3X series. The listing also confirms its 84 MHz maximum speed and 100-LQFP package. Detailed flash capacity, peripheral configuration, pin assignments, electrical limits, and temperature ratings are not included in the supplied verified snippets and therefore are not inferred here. Those parameters should be confirmed in the complete manufacturer documentation before schematic capture or PCB layout.
The 100-LQFP package provides 100 external lead positions and is intended for surface-mount assembly. Its 14 x 14 mm body is larger than the compact QFN packages used by many competing microcontrollers, but it provides a generous lead count for external peripheral connections. Engineers should use the official pin diagram and land pattern rather than infer connectivity from the package dimensions.
Typical design roles include embedded control, sensor aggregation, communications equipment, and compact industrial automation. In these systems, the 84 MHz Cortex-M3 processor can execute control firmware while the integrated memory retains working data. The exact peripheral complement and communication capabilities must be verified before assigning USB, Ethernet, UART, CAN, or other functions to specific pins.
A key design consideration is package-level planning. A 100-LQFP footprint requires adequate routing escape space, careful decoupling, and assembly-process verification. Designers should also confirm power sequencing, clocking, programming access, and every peripheral signal against the full ATSAM3X2CA-AU documentation. This page intentionally separates verified facts from missing technical fields.
This page combines verified pricing, package, speed, memory, and source information with explicit engineering gaps, helping engineers evaluate the ATSAM3X2CA-AU without presenting unavailable flash, pinout, temperature, or compliance data as established facts.
ドロップイン代替品: ATSAM3X2CA-AU — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATSAM3X2CA-AU （同一形状・フットプリント） — 相違点: Package, Series.
ATSAM3S2CA-AU
✅ ドロップイン価格はお問い合わせください
データシートを見る →ATSAM3X2CA-AU 最大定格＆電気的特性
| Product Type | 32-bit ARM Cortex-M3 Flash Microcontroller |
| Manufacturer | Atmel, acquired by Microchip Technology |
| Series | SAM3X |
| Maximum CPU Speed | 84 MHz |
| Supply Voltage Range | 1.62 V to 3.6 V |
| RAM Size | 36K x 8 bits |
| Processor Core | ARM Cortex-M3 |
| Architecture | 32-bit |
| パッケージ | 100-LQFP (14 x 14 mm) |
| Lead Count | 100 leads |
| 実装タイプ | Surface Mount |
| Flash Memory Type | Embedded Flash |
ATSAM3X2CA-AU 100-lqfp (14 x 14 mm) ピン配置ガイド
ATSAM3X2CA-AU (100-lqfp (14 x 14 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: ATSAM3X2CA-AU.
詳細は データシート をご参照ください。
主な用途
ATSAM3X2CA-AU の用途: 6 件s: Embedded Control Systems, Sensor Aggregation and Conditioning, Industrial Automation Controller, Communications Equipment, Compact Data Acquisition System, IoT Edge Device.
Embedded Control Systems
The ATSAM3X2CA-AU can serve as the central controller in an embedded system because it combines an 84 MHz 32-bit ARM Cortex-M3 processor with 36K x 8 bits of SRAM. A designer can use the processor for deterministic control logic, state management, and peripheral coordination while operating from a verified 1.62 V to 3.6 V supply. The 100-LQFP (14 x 14 mm) package offers 100 external lead positions, which can ease routing when the selected device has enough exposed I/O. Before committing the device, engineers should confirm flash capacity, interrupt mapping, timer availability, and every required peripheral in the complete manufacturer documentation; those details were not included in the supplied verified snippets.
Sensor Aggregation and Conditioning
The 84 MHz Cortex-M3 performance of the ATSAM3X2CA-AU is appropriate for a sensor hub that must sample inputs, filter measurements, and present processed results to another system. Its 36K x 8 bits of verified SRAM provides working memory for buffering samples and maintaining protocol state, while the 1.62 V to 3.6 V supply range supports integration into low-voltage embedded electronics. The final design must confirm the target's ADC, communication peripherals, pin multiplexing, and electrical timing because these details were not supplied in the verified excerpts. Component selection should also account for the relatively large 100-LQFP footprint when planning board area and assembly capacity.
Industrial Automation Controller
ATSAM3X2CA-AU can support an industrial automation controller when the application benefits from a 32-bit Cortex-M3 core operating at 84 MHz. The processor can manage control sequences, debounce input conditions, operate timers, and maintain system state across multiple automation tasks. Its 1.62 V to 3.6 V operating range allows integration with appropriately designed low-voltage logic. However, industrial suitability cannot be established from the verified snippets alone: designers need the device's complete peripheral list, I/O characteristics, operating-temperature limits, and regulatory information. The 100-LQFP package also requires a PCB footprint and assembly process capable of handling its 14 x 14 mm body and 100 leads.
Communications Equipment
The ATSAM3X2CA-AU may be evaluated for communications equipment requiring deterministic real-time execution at 84 MHz. Its 32-bit Cortex-M3 architecture can handle protocol processing, command parsing, and buffer management, while 36K x 8 bits of SRAM can support working state for selected network or serial protocols. The supplied verified results do not specify UART, CAN, USB, Ethernet, or other communication peripherals, so no such interface should be assumed. Engineers must verify the exact peripheral set, alternate-function mapping, signal levels, and protocol timing in the full datasheet. Its 100-LQFP package provides a substantial routed footprint, which may assist escape routing but increases board-area requirements.
Compact Data Acquisition System
An ATSAM3X2CA-AU-based data-acquisition design can use the 84 MHz processor for sample handling, filtering, and host communication. The verified 36K x 8 bits of SRAM offers space for intermediate samples and protocol buffers, and the 1.62 V to 3.6 V supply range can simplify low-voltage power architecture. Because the supplied excerpts omit ADC resolution, sample rate, converter interfaces, timing characteristics, and available communication peripherals, a specific measurement architecture cannot be approved from this summary. Validation should include checking analog-capable pins, acquisition timing, memory endurance, calibration paths, and board-level noise performance. The 100-LQFP land pattern must be reviewed for analog routing and thermal requirements.
IoT Edge Device
ATSAM3X2CA-AU can be considered for an IoT edge device when local control and protocol handling require more performance than a low-end 8-bit controller. Its 84 MHz 32-bit Cortex-M3 core and 36K x 8 bits of SRAM are useful for managing sensor data, local logic, and communication state, while the 1.62 V to 3.6 V range supports low-voltage integration. Wireless and wired interface availability was not verified, so the device cannot be assumed to contain a radio or a specific network controller. Designers should match the confirmed peripherals, flash requirement, and software-driver support to the product architecture. They should also evaluate the 14 x 14 mm 100-LQFP package against enclosure size and automated-board-assembly constraints.
エンジニアリング参考データ: ATSAM3X2CA-AU — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Package | 100-LQFP (14 x 14 mm) |
| Brand | Microchip Technology |
| Maximum CPU Speed | 84 MHz |
| Supply Voltage Range | 1.62 V to 3.6 V |
| RAM Size | 36K x 8 bits |
| Processor Architecture | 32-bit ARM Cortex-M3 |
| Series | SAM3X |
主な差別化要因
- Higher verified operating speed than the listed SAM3S alternative （vs ATSAM3S2CA-AU)
- Smaller verified package than the listed ATSAM3X8EA-AU （vs ATSAM3X8EA-AU)
- Documented 36K x 8-bit SRAM configuration （vs ATSAM3S2CA-AU)
設計ノート
Use the official 100-LQFP land pattern for the 14 x 14 mm package and confirm pad dimensions against the current Microchip Technology package drawing. Place decoupling capacitors adjacent to the relevant supply pins, route the ground return using a low-impedance plane, and preserve clearance beneath the package where the mechanical and thermal guidance permits. Do not infer missing pin assignments from the verified distributor summary.
Design the supply for the verified 1.62 V to 3.6 V operating range, including tolerance, startup sequencing, and the voltage requirements of every connected interface. The supplied excerpts do not provide absolute maximum ratings, regulator sequencing, or power-consumption figures, so those values must be obtained from the complete datasheet before setting component tolerances and designing protections.
The 100-LQFP package provides 100 leads but still requires deliberate escape routing around a 14 x 14 mm body. Group interface signals by function, avoid routing sensitive signals beneath the device where practical, maintain continuous ground references, and review the manufacturer's recommended pin layout. The individual pin map remains unverified in the supplied data and must control the final schematic and layout.
Do not treat another SAM-series device as a drop-in replacement merely because it uses an LQFP package. ATSAM3S2CA-AU is listed as a 64 MHz, 128 KB-flash part, while ATSAM3X8EA-AU is listed as an 84 MHz, 512 KB-flash device in a 144-LQFP package. Confirm footprint, pin function, memory organization, peripherals, clock setup, and software support before approving any substitution.
コンプライアンス情報
The verified LCSC snippets contain a ROHS label for ATSAM3X2CA-AU, but they do not provide a compliance statement or supporting document. The individual compliance fields are therefore recorded as unknown rather than inferred from the label.
