ATXMEGA64A1-AU - 32MHz 64KB Flash MCU | Microchip Technology
部品番号: ATXMEGA64A1-AU ✓ 生産中ATXMEGA64A1-AU 概要
An 8/16-bit microcontroller is a programmable semiconductor that integrates a CPU, nonvolatile program memory, data memory, interrupt handling, and peripherals into one device. The ATXMEGA64A1-AU belongs to the AVR XMEGA family, which extends the AVR architecture into a higher-performance 8/16-bit platform with simultaneous operation of two 16-bit registers and hardware accelerators for data movement and event routing.
The 64 KB Flash program memory includes a 4 KB boot-code section and supports read-while-write operation. Internal memory is completed by 4 KB of SRAM and 2 KB of EEPROM. Peripheral integration includes four-channel DMA, an eight-channel event system, 78 general-purpose I/O lines, a 16-bit real-time counter, and eight flexible 16-bit timer/counter modules with compare and PWM channels. These resources reduce external logic and improve responsiveness in embedded control designs.
The enhanced AVR RISC architecture executes instructions in a single clock cycle and delivers throughput approaching 1 MIPS per MHz. Its integrated peripherals can transfer data without repeated CPU intervention, while the event system connects timer, comparator, ADC, and other peripherals through configurable event channels. The ATXMEGA64A1-AU therefore supports responsive embedded control without requiring a separate DSP or high-speed external bus interface for many common tasks.
Typical uses include industrial automation controllers, data acquisition systems, motor-control and PWM platforms, communications equipment, and connected sensor nodes. The device is particularly useful when a design needs more peripheral capacity and processing throughput than a small 8-bit MCU, while retaining the familiar AVR development ecosystem and integrated on-chip memories.
PCB implementation should preserve the manufacturer's recommended power, clock, decoupling, programming, and signal-routing arrangements. The 100-lead TQFP footprint requires careful escape routing around the device, while the 1.6 V to 3.6 V operating range requires attention to regulator tolerance, signal levels, and load-dependent voltage droop.
This product page organizes the core device specifications, package information, design considerations, application guidance, and pin-compatible family alternatives into a single engineering reference for MCU selection and board design.
ドロップイン代替品: ATXMEGA64A1-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: ATXMEGA64A1-AU （同一形状・フットプリント） — 相違点: Package, Boot Code Section, DMA Channels, Event System Channels, ADC.
ATXMEGA64A1U
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATXMEGA64A2-AU
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATXMEGA64A3-AU
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →ATXMEGA64A4-AU
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATXMEGA128A1-AU
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →ATXMEGA64A1-AU 最大定格＆電気的特性
| Product Type | 8/16-bit AVR XMEGA A1 microcontroller |
| Maximum Clock Speed | 32 MHz |
| Flash Program Memory | 64 KB (32K x 16) |
| Boot Code Section | 4 KB |
| SRAM | 4 KB |
| EEPROM | 2 KB |
| Operating Voltage Range | 1.6 V to 3.6 V |
| DMA Channels | 4 channels |
| Event System Channels | 8 channels |
| General-Purpose I/O Lines | 78 lines |
| Reported I/O Port Count | 34 |
| Real-Time Counter | 16-bit |
| Timer/Counter Modules | 8 flexible 16-bit timer/counters |
| CPU Architecture | AVR enhanced RISC, 8/16-bit |
| パッケージ | 100-lead TQFP, 14 mm x 14 mm |
| 実装タイプ | Surface mount |
| Program Memory Type | Flash |
| In-System Programming | Supported |
| Read-While-Write | Supported |
| Programmable Multilevel Interrupt Controller | Supported |
| External Bus Interface | Supported |
ATXMEGA64A1-AU 100-lead tqfp, 14 mm x 14 mm ピン配置ガイド
ATXMEGA64A1-AU (100-lead tqfp, 14 mm 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: ATXMEGA64A1-AU.
詳細は データシート をご参照ください。
主な用途
ATXMEGA64A1-AU の用途: 6 件s: Industrial Automation Controllers, Industrial Data-Acquisition Systems, Motor Control and PWM Platforms, Communications Equipment, Connected Sensor Nodes, Programmable Logic and Test Equipment.
Industrial Automation Controllers
The ATXMEGA64A1-AU fits industrial automation controllers that combine multiple discrete inputs, actuator outputs, timing functions, and local communication. Its 78 general-purpose I/O lines provide substantial board-level integration in a 100-lead TQFP package, while eight 16-bit timer/counters support pulse measurement, interval timing, and PWM generation. The four-channel DMA controller can move data between peripherals and SRAM with less CPU intervention, and the eight-channel event system can coordinate timing-sensitive events. At 32 MHz, the AVR enhanced RISC core also provides the processing headroom required for protocol stacks and control logic. Engineers should still allocate appropriate isolation, surge protection, grounding, and safety margins for factory-connected equipment.
おすすめ
Industrial Data-Acquisition Systems
The ATXMEGA64A1-AU is suitable for compact data-acquisition equipment that must combine timed analog measurements, local buffering, control outputs, and communications in one controller. Its 32 MHz core supports deterministic sampling and signal processing, while 4 KB of SRAM and 2 KB of EEPROM provide working and nonvolatile storage beyond the 64 KB Flash program area. DMA can transfer sampled or serial data efficiently, and the event system can coordinate ADC activity, timers, and external triggers. Use the device's multiplexed I/O only after mapping analog, communications, and debug functions to specific pins. Board-level reference quality, input protection, analog filtering, isolation, and calibration ultimately determine measurement accuracy.
おすすめ
Motor Control and PWM Platforms
The ATXMEGA64A1-AU supports motor-control and PWM platforms where multiple timing outputs, feedback inputs, and control computations must operate together. Its eight flexible 16-bit timer/counters include compare and PWM channels, enabling several motor axes, gate-drive sequences, or synchronized half-bridge outputs. The event system can connect timer events directly to other peripherals, reducing latency and CPU workload, while DMA supports efficient movement of position, speed, or current-control data. The 78 GPIO lines provide flexibility for encoders, fault inputs, and control signals. The MCU does not replace power electronics: designers still need suitable gate drivers, current sensing, overcurrent protection, thermal management, and appropriate grounding for the power stage.
おすすめ
Communications Equipment
The ATXMEGA64A1-AU can serve as the control processor in communications equipment where a low-power 8/16-bit MCU must manage a protocol stack, local user interface, and hardware peripherals. Its 32 MHz execution rate, 64 KB Flash, and 4 KB SRAM are useful for embedded protocol handling, while the timer/counter and event resources support baud-rate timing and synchronized data movement. The extensive GPIO count allows connection of UART, SPI, I2C, and status signals without excessive multiplexing. Interface voltage levels and signal conditioning must be handled externally when connected to optocouplers, transceivers, or line drivers. Firmware should use the manufacturer pin-muxing definitions and validate timing against the selected communication standard.
おすすめ
Connected Sensor Nodes
The ATXMEGA64A1-AU is appropriate for connected sensor nodes that combine local sensing, digital filtering, event handling, and a low-power communications link. Its internal Flash stores firmware, SRAM supports working buffers, and EEPROM preserves configuration or calibration values. The event system and DMA controller allow sensors, timers, and communication blocks to exchange information with reduced processor involvement, which is beneficial in periodic acquisition systems. Low-power operation still depends on the selected clock mode, peripheral activity, and board leakage, so sleep-mode requirements should be measured on the finished assembly. Sensor excitation, signal conditioning, protection, and radio isolation are separate analog and RF design tasks.
おすすめ
Programmable Logic and Test Equipment
The ATXMEGA64A1-AU can serve as the supervisory controller in programmable test and measurement equipment where sequencing, limits, logging, communications, and user control must be coordinated. Eight 16-bit timer/counters support precise stimulus timing and measurement windows, while DMA accelerates transfer of results and status information. The 64 KB Flash supports substantial control firmware, and 2 KB of EEPROM can retain setup values across power cycles. For precision analog measurement, external references, ADC devices, op-amps, and protection networks are generally required because the MCU is primarily a digital controller. Layout must separate sensitive analog and high-current paths from digital clocks and switching nodes to avoid measurement errors.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATXMEGA64A1-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 | ATXMEGA64A1U | ATXMEGA64A2-AU | ATXMEGA64A3-AU | ATXMEGA64A4-AU | ATXMEGA128A1-AU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100, 14 mm x 14 mm | TQFP-100 | TQFP-100 | TQFP-100 | TQFP-100 | TQFP-100 |
| Maximum Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 64 KB | 64 KB | 128 KB | 128 KB | 256 KB | 128 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| DMA Channels | 4 channels | 4 channels | 4 channels | 4 channels | 4 channels | 4 channels |
| Event System Channels | 8 channels | 8 channels | 8 channels | 8 channels | 8 channels | 8 channels |
| General-Purpose I/O Lines | 78 lines | Up to 32 I/O pins listed on the product page | 78 lines | 78 lines | 78 lines | 78 lines |
| Timer/Counter Modules | 8 flexible 16-bit timer/counters | 8 flexible 16-bit timer/counters | 8 flexible 16-bit timer/counters | 8 flexible 16-bit timer/counters | 8 flexible 16-bit timer/counters | 8 flexible 16-bit timer/counters |
主な差別化要因
- Provides the complete 78-line GPIO resource set in the target device （vs ATXMEGA64A1U)
- Matches the target Flash capacity without requiring a larger memory device （vs ATXMEGA64A4-AU)
- Supports firmware growth without changing to the 128 KB Flash member （vs ATXMEGA128A1-AU)
設計ノート
Design the 1.6 V to 3.6 V supply rail so that its tolerance, startup ramp, and transient response remain acceptable during Flash programming and maximum peripheral activity. Place the required bypass capacitors at the corresponding power pins and keep the return-current path short. Verify regulator output against the MCU operating limits and avoid routing high-current outputs through the same narrow copper region used by sensitive analog or crystal circuitry.
Assign every connection from the manufacturer pin-description table because the 100-lead TQFP pinout combines GPIO, alternate peripheral functions, debug signals, analog inputs, clocks, and power pins. Maintain the manufacturer's recommended footprint dimensions and land pattern rather than relying on a generic TQFP drawing. Check pin multiplexing in the final firmware and schematic, particularly for communications, timers, ADC functions, and programming signals.
Route clock and high-speed communication signals as controlled-impedance nets where applicable, and keep switching or motor-drive nodes away from ADC and crystal inputs. Provide a solid ground plane, minimize loop area in power paths, and use dedicated return paths beneath high-current switching interfaces. Place external crystals or resonators and their load components close to the device, following the layout guidance in the manufacturer datasheet.
Do not assume that identical TQFP outlines guarantee a drop-in replacement. A valid substitution must match package dimensions, pin multiplexing, memory requirements, peripheral resources, clock behavior, voltage limits, and temperature range. Also verify programming, boot, reset, and debug functions before releasing an alternate MPN for production. Firmware built for the original device should be regression-tested with every selected alternative.
コンプライアンス情報
Compliance status must be confirmed for the exact ordering code from the manufacturer's product documentation.
