ATXMEGA64C3-AU - 32MHz 64KB 8/16-Bit MCU | Microchip
料号： ATXMEGA64C3-AU ✓ 量产中ATXMEGA64C3-AU 概述
An 8/16-bit microcontroller is a compact embedded-processing device that combines a CPU core, nonvolatile program memory, data memory, interrupt handling, and peripherals on one integrated circuit. The AVR enhanced RISC architecture belongs to the broader microcontroller hierarchy, where real-time control, low-power operation, and deterministic peripheral integration are central design requirements. The ATXMEGA64C3 family combines that processing platform with event-system and programmable interrupt capabilities.
Key features include a four-channel event system, read-while-write Flash, 2 KB of EEPROM, and 4 KB of SRAM. Read-while-write capability can support firmware updates or data-storage operations without removing the device from its circuit, subject to the detailed restrictions and address regions described by Microchip. The four-channel event system provides hardware-assisted routing between peripherals, helping reduce processor overhead in timing-sensitive control systems.
The device supports operating voltage options identified in the verified distributor data as 1.8 V, 2.5 V, and 3.3 V, while Mouser specifies an overall 1.6 V to 3.6 V range. This low-voltage operating envelope suits compact embedded equipment, portable instruments, sensor nodes, and industrial control modules. Its AVR instruction set and peripheral-rich architecture provide a practical balance between processing throughput, memory capacity, and low-power operation.
Typical applications include industrial monitoring, low-power sensor interfaces, compact control panels, embedded measurement equipment, and communication-enabled control nodes. The 32 MHz clock rate supports responsive event handling and general-purpose control, while the 64 KB Flash provides useful space for application firmware, boot logic, and protocol handling. The integrated EEPROM is valuable for retaining calibration values, counters, configuration data, and audit records.
Designers should select capacitors, clock circuitry, programming connections, and decoupling according to the manufacturer datasheet rather than relying only on distributor summaries. Because the verified data does not expose the complete pin map, exact I/O assignments, programming interface details, or operating-current figures, those values must be confirmed before PCB release. This page synthesizes the verified device identity, memory configuration, package information, event-system feature, sourcing links, and engineering-selection guidance without inventing unverified electrical details.
直接替换替代料： ATXMEGA64C3-AU ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
ATXMEGA64C3-AUR
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA64A3U-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA64A3U-AUR
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA128A3U-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA128A3-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA128A3-AUR
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA64C3-AU 最大额定值与电气特性
| Product Type | 8/16-bit RISC Microcontroller |
| Architecture | AVR enhanced RISC |
| Product Family | AVR XMEGA C3 |
| 最大时钟频率 | 32 MHz |
| Flash Memory | 64 KB |
| Flash Organization | 32K x 16 |
| Boot Code Section | 8 KB |
| EEPROM | 2 KB |
| SRAM | 4 KB |
| Event System Channels | 4 channels |
| Operating Voltage Range | 1.6 V to 3.6 V |
| Supported Voltage Options | 1.8 V, 2.5 V, and 3.3 V |
| 封装 | 64-pin TQFP, 14 x 14 mm |
| 安装类型 | Surface Mount |
| Programmable Memory | In-system programmable Flash |
| Flash Read-While-Write | Supported |
| Programmable Interrupt Controller | Multi-level |
ATXMEGA64C3-AU 64-pin tqfp, 14 x 14 mm 引脚配置指南
ATXMEGA64C3-AU（64-pin tqfp, 14 x 14 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATXMEGA64C3-AU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATXMEGA64C3-AU 适用于 6 应用s: Industrial Sensor Monitoring, Portable Measurement Instrument, Embedded Data Acquisition, Low-Power Control Node, Programmable Control Panel, Bootloader-Enabled Embedded Product.
Industrial Sensor Monitoring
The ATXMEGA64C3-AU fits industrial sensor-monitoring modules that must acquire measurements, apply local filtering, and retain operating parameters. Its 32 MHz processing rate supports responsive control, while the 2 KB EEPROM can store calibration coefficients, sensor offsets, device identifiers, and counters without consuming the 4 KB SRAM used for active data. The 1.6 V to 3.6 V operating range also allows the MCU to share a regulated low-voltage rail with compatible sensors and interface circuits. The four-channel event system can coordinate timer or peripheral events, reducing processor involvement in deterministic sampling sequences. Before committing to a board revision, engineers should verify the exact I/O assignments, analog functions, ADC performance, and peripheral availability in the manufacturer datasheet.
推荐
Portable Measurement Instrument
The ATXMEGA64C3-AU is suitable for portable measurement equipment where low voltage, local processing, and persistent calibration data are important. Its 64 KB Flash provides room for application firmware, boot logic, and measurement routines, while the 8 KB boot-code section supports a structured firmware arrangement. The 2 KB EEPROM can retain calibration settings between power cycles, and the 4 KB SRAM can hold working buffers for sensor conversion and communications. Operation within the verified 1.6 V to 3.6 V range can simplify low-voltage power architecture, although actual battery life depends on current consumption and sleep behavior that were not specified in the supplied data. Engineers should also verify oscillator requirements, ADC characteristics, and programming access before layout approval.
推荐
Embedded Data Acquisition
The ATXMEGA64C3-AU can serve as the central controller in a compact data-acquisition subsystem that combines sensor conditioning, timed sampling, and local data preparation. Its 32 MHz clock provides additional instruction throughput for interrupt servicing and protocol handling, while its programmable multi-level interrupt controller helps prioritize time-sensitive events. The four-channel event system offers a hardware mechanism for connecting internal peripherals, potentially reducing the polling burden in synchronized measurements. The 4 KB SRAM is suitable for short acquisition buffers, and EEPROM can preserve counters or calibration records. Because the verified source does not specify ADC resolution, sample rate, converter input count, or operating current, those capabilities must be established from the exact datasheet before assigning analog sampling requirements.
推荐
Low-Power Control Node
The ATXMEGA64C3-AU is a practical candidate for low-power distributed control nodes that combine local decision-making with limited communications. The verified 1.6 V to 3.6 V operating range supports low-voltage supply designs, and the 32 MHz core provides responsive peripheral control without moving every task to a higher-power processor. Its 64 KB Flash and 2 KB EEPROM separate firmware from persistent configuration, while the four-channel event system can assist with organized event routing. A network-facing implementation can add an Ethernet interface such as the LAN8742A-CZ, although communication protocol and memory usage must be evaluated carefully. Exact sleep-mode current, wake-up latency, and pin retention characteristics are unavailable in the supplied data and should be checked before defining battery-life targets.
推荐
Programmable Control Panel
The ATXMEGA64C3-AU can support a programmable control panel that combines local user-interface handling, state-machine logic, and external communications. Its 32 MHz execution rate allows multiple interrupt-driven tasks, and the multi-level interrupt controller helps prioritize button, timer, and communications events. The 64 KB Flash offers enough capacity for a meaningful application and update partition, while read-while-write capability can assist selected firmware-maintenance workflows when the relevant memory regions and restrictions are respected. The 2 KB EEPROM is suitable for configuration and usage records, and the 4 KB SRAM can support display buffers or temporary protocol data. Because verified data does not identify the exact USART, SPI, or display peripherals, the required interfaces should be confirmed against the device documentation before selecting companion components.
推荐
Bootloader-Enabled Embedded Product
The ATXMEGA64C3-AU is appropriate for embedded products that benefit from a dedicated bootloader and controlled firmware organization. Its 64 KB in-system programmable Flash includes an identified 8 KB boot-code section, allowing startup code, field-update support, and application firmware to occupy defined regions. Read-while-write capability may assist update workflows, but designers must observe the family documentation regarding supported regions and concurrent operation. The 2 KB EEPROM can store device identity, calibration values, and update state, while the 4 KB SRAM supports bootloader staging and application execution. A robust implementation should include power-loss recovery, signature verification, rollback control, and a defined communications interface. Programming voltage, boot pins, and watchdog behavior were not present in the verified snippets and must be confirmed before schematic release.
推荐
推荐产品汇总
工程参考数据： ATXMEGA64C3-AU ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATXMEGA64C3-AUR | ATXMEGA64A3U-AU | ATXMEGA64A3U-AUR | ATXMEGA128A3U-AU | ATXMEGA128A3-AU | ATXMEGA128A3-AUR |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (14 x 14 mm) | 64-pin TQFP (14 x 14 mm) - same | 64-pin TQFP (14 x 14 mm) - same | 64-pin TQFP (14 x 14 mm) - same | 64-pin TQFP (14 x 14 mm) - same | 64-pin TQFP (14 x 14 mm) - same | 64-pin TQFP (14 x 14 mm) - same |
| Maximum Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB | 128 KB | 128 KB |
| Architecture | 8/16-bit AVR enhanced RISC | 8/16-bit AVR enhanced RISC | 8/16-bit AVR | 8/16-bit AVR | 8/16-bit AVR | 8/16-bit AVR | 8/16-bit AVR |
关键差异点
- Four-channel hardware event system in the C3 family （对比 ATXMEGA64A3U-AU)
- Direct memory equivalence with the packaging-suffix alternative （对比 ATXMEGA64C3-AUR)
- Lower Flash capacity than memory-expanded XMEGA alternatives （对比 ATXMEGA128A3U-AU)
设计说明
Design the supply rail around the verified 1.6 V to 3.6 V operating range and the applicable 1.8 V, 2.5 V, or 3.3 V operating point. Place the required bypass capacitors close to the device's power and ground pins using the manufacturer's recommended values and layout. Confirm the complete operating-voltage and frequency matrix in the manufacturer datasheet before choosing a regulator; the supplied distributor data does not provide active current, sleep current, or voltage-dependent maximum-speed limits.
Route clocks, programming signals, and communication interfaces away from noisy switching nodes and maintain short return paths to the device ground pins. The 64-pin TQFP footprint requires careful fanout to avoid long stubs, and decoupling should be placed directly beside the relevant pins. Because the verified material does not include the exact pin map or recommended land pattern, verify pin numbering, exposed versus non-exposed thermal structures, and package dimensions against the official drawing before releasing artwork.
Do not assume that equal Flash memory and clock speed establish a drop-in replacement across different XMEGA families. Peripheral assignments, interrupt vectors, boot behavior, and package details may differ even when the order codes appear similar. Compare the exact datasheets, pin tables, errata, and application requirements before substituting ATXMEGA64A3U or ATXMEGA128A3U devices. Also distinguish a packaging suffix such as -AUR from an electrical qualification or temperature-grade change.
Read-while-write capability does not mean every Flash address can be written while code executes from the same memory. Firmware update logic must respect the supported read-while-write regions, boot-loader boundaries, and timing restrictions in the manufacturer documentation. Use the 8 KB boot-code section deliberately, provide a controlled recovery path, and test interruption and power-loss scenarios so an interrupted update cannot leave the field device without valid application firmware.
合规信息
The supplied manufacturer and distributor search results did not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. No compliance status has been inferred from the green package designation or other incomplete distributor wording.
