ATXMEGA64B3-AU - 32MHz 64KB AVR Microcontroller | Microchip
MPN: ATXMEGA64B3-AU ✓ AktifATXMEGA64B3-AU Ringkasan
An 8/16-bit microcontroller is a compact computing platform that combines a CPU, nonvolatile program memory, volatile data memory, peripherals, and communication interfaces on one semiconductor die. The ATxmega64B3 belongs to the AVR XMEGA family of 8-bit microcontrollers, combining an enhanced RISC architecture with high-resolution timers, flexible event handling, USB connectivity, and mixed-signal-oriented peripherals. This hierarchy places it above simple logic controllers and makes it suitable for embedded control systems requiring deterministic peripheral coordination.
Key device features include 36 general-purpose I/O lines, read-while-write Flash operation, internal EEPROM and SRAM, and hardware support for real-time counter functions. According to the Microchip ATxmega64B3 product page, the device supports applications including utility metering, home automation, climate control, industrial control, sports equipment, toys, electronic tokens, medical equipment, USB connectivity, power tools, and fire-alarm systems. The B3 series is specifically offered in 64-pin packages.
Technically, the ATxmega64B3 architecture combines an AVR enhanced RISC core with dedicated event-system channels, DMA transfers, and a multilevel interrupt controller. DMA can move data without occupying the CPU for every transfer, while the event system links timers, comparator, and other peripherals through hardware signals. This is useful in control and measurement designs where predictable timing, concurrent sensing, and low CPU overhead are more important than maximum general-purpose processing performance.
Typical implementations include utility and energy meters, USB-connected control nodes, home-automation panels, climate-control equipment, industrial controllers, and compact human-interface systems with segment LCD displays. The LCD controller and USB interface allow a single device to manage local operator feedback and a host-side data connection. For battery-powered products, the low-power operating modes remain useful, although sleep-current figures and active-current limits should be selected from the device-specific electrical tables.
When designing a PCB, reserve the 64-pin TQFP land pattern, provide clean supply decoupling at the appropriate power pins, and route USB D+ and D- as a controlled-impedance differential pair. USB clock, data, and ground returns require careful layout, while unused I/O pins should be left according to the manufacturer's pin-description guidance. Confirm programming, bootloader, clock, and peripheral multiplexing before finalizing the board.
This product page consolidates the manufacturer overview, distributor identification, package details, drop-in candidates, application guidance, and practical layout considerations. It supports faster engineering decisions by separating core MCU resources from the USB, LCD, DMA, event-system, memory, and interface constraints that determine whether the ATXMEGA64B3-AU fits a new design.
Alternatif penggantian untuk ATXMEGA64B3-AU — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
ATXMEGA128B3-AU
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
ATXMEGA64B3-AN
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
ATXMEGA64B3-AUR
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
ATXMEGA64A3U-AU
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
ATXMEGA192A3-AU
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
ATXMEGA64B3-AU Rating Maksimal & Karakteristik Listrik
| Device Type | 8/16-bit AVR XMEGA microcontroller |
| Architecture | AVR enhanced RISC |
| Maximum Clock Speed | 32 MHz |
| Maximum Throughput | 32 MIPS |
| Program Memory | 64 KB self-programming Flash |
| Boot Code Section | 4 KB |
| SRAM | 4 KB |
| EEPROM | 2 KB |
| Flash Read-While-Write | Supported |
| DMA Controller | 2 channels |
| Event System | 4 channels |
| USB Interface | USB Full-Speed Device |
| LCD Controller | Up to 4 x 25 segment LCD |
| General-Purpose I/O | 36 lines |
| Interrupt Controller | Programmable multilevel interrupt controller |
| Real-Time Counter | Supported |
| Tegangan Pemuat | 1.8 V, 2.5 V, or 3.3 V |
| Paket | 64-TQFP, 14 x 14 mm |
| Tipe Mounting | Surface mount |
ATXMEGA64B3-AU 64-tqfp, 14 x 14 mm Diamant Konfigurasi Panduan
Konfigurasi pin untuk ATXMEGA64B3-AU (64-tqfp, 14 x 14 mm pakai pakai). IC digital ini termasuk GPIO, antarmuka komunikasi (UART, SPI, I2C), dan pin kuasa. Lihat datasheet produsen untuk fungsi pin alternatif dan opsi konfigurasi. Penting untuk desain sistem pengemasan dan PCB.
Tidak ada data diatribut pin yang tersedia untuk ATXMEGA64B3-AU.
Lihat ke: datasheet produk untuk konfigurasi pin penuh.
Aplikasi Umum
ATXMEGA64B3-AU cocok untuk 6 aplikasis: USB Utility Metering, Home Automation Control, Climate Control Panel, Industrial Control Node, Medical and Diagnostic Equipment, USB Connected Embedded Product.
USB Utility Metering
The ATXMEGA64B3-AU fits USB utility meters because it combines a USB Full-Speed Device controller with 64 KB of self-programming Flash, 4 KB of SRAM, and a 32 MHz AVR core. Its two-channel DMA controller can move sampled or buffered data while the CPU handles protocol processing, reducing data-transfer overhead. The 4 x 25 segment LCD controller also supports local readouts without a separate display controller. In a meter implementation, USB can carry configuration and measured-value data while the event system coordinates timer, capture, and communication activity. Firmware should use the device-specific USB descriptors and endpoint configuration, and the PCB must preserve controlled-impedance routing and clean return paths for D+ and D-.
Direkomendasikan
Home Automation Control
ATXMEGA64B3-AU is suitable for a home-automation controller that combines local I/O, timing, display feedback, and host connectivity. Its 36 general-purpose I/O lines support switches, sensors, relays, and status indicators, while the four-channel event system can coordinate inputs with timers and other peripherals without relying entirely on polling. The 32 MHz processing rate and up to 32 MIPS throughput provide headroom for communication stacks and control logic, and the LCD controller can present simple menus or status information on a segment display. USB connectivity is useful during installation and configuration. Firmware must account for alternate peripheral multiplexing, while the board should route sensitive sensor and communication signals away from switching nodes.
Direkomendasikan
Climate Control Panel
The ATXMEGA64B3-AU supports climate-control panels that must acquire sensor inputs, drive displays, operate timers, and communicate with a host. Its 64 KB Flash provides space for calibration tables, control logic, interface protocols, and boot code, while 4 KB of SRAM supports working state and communication buffers. The event system is valuable for deterministic signal routing, and the LCD controller can handle a segment-based temperature, humidity, or status display. Compared with a simple logic controller, the AVR XMEGA device supports a more capable firmware environment without requiring an external display controller. The design should select the operating voltage and clock mode together, follow the pin-multiplexing tables, and use stable supply decoupling around the MCU.
Direkomendasikan
Industrial Control Node
ATXMEGA64B3-AU can serve as a compact industrial control node for sensor acquisition, actuator supervision, timing, and local diagnostics. Its two-channel DMA controller reduces CPU intervention during data movement, while the four-channel event system links peripherals and helps coordinate time-critical operations. The 32 MHz AVR core provides sufficient throughput for protocol handling and supervisory logic, and the 4 KB SRAM supports buffering. For a connected node, USB Full-Speed Device support enables integration with a host during commissioning or data transfer. Industrial implementation also requires careful attention to supply regulation, grounding, transient protection, and the operating-temperature grade. Firmware validation should confirm the selected peripheral multiplexing and ensure that control outputs remain in defined states during reset and firmware updates.
Direkomendasikan
Medical and Diagnostic Equipment
ATXMEGA64B3-AU can be used in compact medical or diagnostic equipment where local sensing, control, display, and USB connectivity must be integrated. The 32 MHz AVR core supports control and communication firmware, 64 KB of Flash holds application and boot code, and the 4 KB SRAM provides data-memory capacity. The LCD controller may display measurements or operating status on a segment display, while the USB interface permits connection to a host for configuration or exported data. The two-channel DMA and four-channel event system can make periodic measurement and signal routing more deterministic. Because medical products may impose application-specific safety and validation obligations, engineers must evaluate those requirements independently and confirm the exact device grade, supply limits, and peripheral configuration against the manufacturer documentation.
Direkomendasikan
USB Connected Embedded Product
The ATXMEGA64B3-AU is well suited to a USB-connected embedded product requiring one controller to manage application logic, data movement, timing, and local feedback. Its USB Full-Speed Device interface removes the need for a separate USB controller when the firmware workload fits the AVR core. At the same time, 64 KB of Flash, 4 KB of SRAM, and 2 KB of EEPROM provide a balanced memory configuration, while DMA and the event system improve peripheral concurrency. A typical implementation could expose configuration, logs, or sensor data over USB while using timers for precise periodic behavior. The board layout should provide short USB routing, continuous ground reference, correct decoupling, and accessible programming and boot interfaces. Firmware updates should also preserve the documented bootloader and Flash write constraints.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk ATXMEGA64B3-AU — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | ATXMEGA128B3-AU | ATXMEGA64B3-AN | ATXMEGA64B3-AUR | ATXMEGA64A3U-AU | ATXMEGA192A3-AU |
|---|---|---|---|---|---|---|
| Package | 64-TQFP, 14 x 14 mm | 64-TQFP | 64-TQFP | 64-TQFP | 64-TQFP | 64-TQFP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 128 KB | 64 KB | 64 KB | 64 KB | 192 KB |
Diferensiator Kunci
- Integrated USB with substantial internal memory (vsATXMEGA64A3U-AU)
- Flash expansion without changing the core performance class (vsATXMEGA128B3-AU)
- Deterministic peripheral coordination (vsATXMEGA64A3U-AU)
Catatan Desain
Use the 64-pin TQFP land pattern and the manufacturer package drawing as the controlling geometry. Place decoupling capacitors close to the device power pins with a short return path to the associated ground plane. USB D+ and D- should be routed as a controlled-impedance differential pair with uninterrupted reference planes, minimized stubs, and no intervening layer changes. Keep programming, reset, and clock nets away from high-current switching paths, and preserve access to the bootloader and programming interface.
Assign every external signal from the device-specific pin-description table because many XMEGA functions share pins through alternate peripheral multiplexing. Confirm the selected USART, SPI, timer, ADC, USB, and external-interrupt assignments before fixing the schematic. After multiplexing is finalized, recheck that programming signals, debug access, and mandatory pin states remain available. Avoid assigning a peripheral solely because its signal appears on the package drawing when another active function has higher priority.
Select the supply voltage and maximum operating frequency as a combined constraint rather than independently. The device supports nominal 1.8 V, 2.5 V, and 3.3 V configurations, but high-speed operating limits depend on the supply range. Use the manufacturer electrical tables to set regulator headroom, startup sequencing, and clock-source limits. Place bulk capacitance near the supply entry and local high-frequency decoupling at each relevant power pin, then verify startup and load-transient behavior on the assembled board.
Treat USB and high-speed clock routing as controlled-impedance nets, and provide a continuous ground reference beneath the pair. Keep the USB PHY connection short, minimize component parasitics, and follow the recommended test points or connector geometry in the device documentation. For timing-sensitive inputs, use the event system and timer resources rather than relying entirely on interrupt latency. Validate the final routing against signal-integrity requirements after accounting for actual board stack-up, connector construction, and enclosure effects.
Do not substitute a related XMEGA ordering code based only on memory size or package name. Before replacing ATXMEGA64B3-AU, verify the complete pin table, peripheral muxing, supply range, temperature grade, flash organization, bootloader behavior, and package markings. The 64 KB Flash limit can also affect the choice between a direct device replacement and ATXMEGA128B3-AU, particularly when protocol libraries or field-update logic are added. Validate both the compiled firmware and the physical board before production release.
Informasi Konformitas
The manufacturer overview confirms an active device but does not state the requested environmental or material-compliance fields. No compliance values were inferred.
