ATXMEGA64D3-MH - 64KB Flash 32MHz AVR XMEGA D3 MCU | Microchip
料号： ATXMEGA64D3-MH ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.86 | $5.86 |
| 10 | $5.27 | $52.70 |
| 100 | $4.68 | $468.00 |
| 500 | $4.1 | $2,050.00 |
| 1,000 | $3.51 | $3,510.00 |
ATXMEGA64D3-MH 概述
An 8/16-bit AVR XMEGA microcontroller is a member of the reduced instruction-set computing (RISC) family of microcontrollers that executes most instructions in a single clock cycle. The "XMEGA D3" sub-family extends the classic AVR architecture with higher peripheral integration (DMA, DAC, event system, crypto engine in some variants) and a 32 MHz pipeline, positioning it between traditional 8-bit MCUs and 32-bit Cortex-M parts on the cost/performance curve. The XMEGA D3 specifically targets low-power applications that still need high-resolution analog peripherals and fast ADC sampling.
Key features of the ATXMEGA64D3-MH include 64 KB Flash with read-while-write support, 2 KB EEPROM for non-volatile data, 4 KB SRAM, 34 programmable I/O lines, two 12-bit DAC channels, a 12-bit ADC, four USART, two two-wire interfaces (TWI), and a four-channel event system. The QFN-64 (9x9) package with exposed thermal pad provides low thermal resistance, suitable for the device's wide -40C to +85C industrial operating range and 32 MHz operation at full peripheral load.
Typical applications include industrial sensor hubs, low-power data loggers, human-machine interface (HMI) controllers, USB device controllers, smart energy metering, and motor control peripherals. Designers frequently select the XMEGA D3 family when an 8-bit footprint is acceptable but more analog integration than an ATmega is required.
When using this device, allocate proper decoupling (100 nF + 1 uF) on each AVDD/DVDD pair, keep the analog and digital ground planes separated until they meet at the exposed pad, and use Atmel/Microchip Studio 7 with the AVR/GNU toolchain to leverage the integrated PDI (program and debug interface). The MH suffix indicates QFN-64 (9x9 mm) industrial temperature grade.
This page synthesizes distributor pricing, drop-in alternatives from the ATXMEGA family, and practical design notes not found in the standalone datasheet.
直接替换替代料： ATXMEGA64D3-MH ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATXMEGA64D3-MH （相同外形与封装尺寸） ——差异在于 Package, I/O Pins, ADC, Core, DAC.
快速对比工具——选择替代料号进行并排对比：
ATXMEGA32D3-MH
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.18 / 个
查看数据手册 →ATXMEGA16D4-MH
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.62 / 个
查看数据手册 →ATXMEGA64D4-MH
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATXMEGA64A4U-MH
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.65 / 个
查看数据手册 →ATXMEGA128D4-MH
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.72 / 个
查看数据手册 →ATXMEGA64D3-MH 最大额定值与电气特性
| Core Architecture | AVR XMEGA (8/16-bit RISC) |
| Family | ATxmega D3 |
| CPU Clock Speed (max) | 32 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Boot Code Section | 4 KB |
| Data EEPROM | 2 KB |
| SRAM | 4 KB |
| Supply Voltage (VDD) | 1.6 V to 3.6 V |
| I/O Pins | 34 |
| 封装 | 64-pin QFN (9x9 mm) with EP |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (industrial) |
| ADC | 12-bit, up to 2 Msps |
| DAC | 2 x 12-bit |
| USART | 4 |
| TWI (I2C-compatible) | 2 |
| SPI | 2 (USART in SPI mode + dedicated) |
| Event System Channels | 4 |
| Program/Debug Interface | PDI |
| RoHS 状态 | Compliant |
ATXMEGA64D3-MH 64-pin qfn (9x9 mm) with ep 引脚配置指南
ATXMEGA64D3-MH（64-pin qfn (9x9 mm) with ep 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： ATXMEGA64D3-MH.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATXMEGA64D3-MH 适用于 6 应用s: Industrial Sensor Hub, Low-Power Data Logger, HMI Controller (Display + Keypad), USB Device / HID Controller, Smart Energy Meter, Motor Control Peripheral Controller.
Industrial Sensor Hub
The ATXMEGA64D3-MH is a strong fit for industrial sensor hubs where multiple analog and digital channels must be sampled and processed concurrently. The device's 12-bit ADC sampling up to 2 Msps, 2 x 12-bit DAC outputs for excitation signals, and 4-channel event system let designers trigger ADC conversions from timer or GPIO events without CPU intervention. With 34 programmable I/O lines the part can host multiple SPI sensors, I2C peripherals, and a UART link to a host PLC. The 64 KB Flash accommodates full Modbus or CANopen protocol stacks alongside sensor firmware, while the 2 KB EEPROM stores calibration constants and 4 KB SRAM buffers bursts of sensor data.
推荐
Low-Power Data Logger
The ATXMEGA64D3-MH fits battery-backed data loggers thanks to its 1.6 V minimum supply, deep-sleep current in the microamp range, and 64 KB of Flash that can hold weeks of scheduling and event logging code. The 2 KB EEPROM is sufficient to buffer acquisition records during write cycles while preserving Flash endurance, and the RTC counter with selectable 32 kHz crystal source keeps wall-clock time during sleep. Battery life at 1 sample per minute can exceed 1 year on a single CR2032 coin cell, especially when leveraging the XMEGA sleep modes and DMA-driven ADC bursts.
推荐
HMI Controller (Display + Keypad)
The ATXMEGA64D3-MH works well in human-machine interface panels that combine an LCD/TFT display with a keypad or touch input. The 2 x 12-bit DAC outputs can drive contrast voltage for character LCDs or supply bias on white amplifiers, while the four USART ports simultaneously handle a TFT controller, a Wi-Fi/BLE module, and an RS-485 fieldbus. The 34 I/O lines drive up to a 4x5 matrix keypad plus status LEDs without external I/O expanders. The 32 MHz CPU clock renders medium-resolution graphics smoothly in software on small color TFTs without an external graphics controller.
推荐
USB Device / HID Controller
The ATXMEGA64D3-MH can serve as a USB device controller through the integrated USB Full-Speed peripheral available on D3 family parts, supporting keyboards, mice, game controllers, and CDC-class virtual COM devices. The 64 KB Flash holds USB stacks and HID descriptor tables comfortably, while the four USART ports provide passthrough channels for bridging USB to RS-232 or RS-485 industrial devices. The 2 KB EEPROM stores USB descriptors and user-configurable strings. For USB host or OTG roles, choose the ATXMEGA64A4U-MH or ATXMEGA64A3-AU instead.
推荐
Smart Energy Meter
The ATXMEGA64D3-MH meets the precision and integration needs of single-phase smart energy meters, where its 12-bit ADC with PGA samples current and voltage CTs while the 12-bit DAC calibrates the analog front end. The four event channels can synchronize ADC sampling to zero-crossing events, improving power-factor calculation accuracy. The 64 KB Flash supports DLMS/COSEM or IEC 62056 protocol stacks and the 2 KB EEPROM stores tariff tables and authentication keys. The 1.6-3.6 V range supports direct battery backup during line-power outages.
推荐
Motor Control Peripheral Controller
The ATXMEGA64D3-MH can act as a peripheral controller next to a dedicated motor-control DSP or FPGA, handling user-interface buttons, parameter storage, and CAN/LIN communication. Its event system synchronizes I/O toggling to the motor PWM cycle, supporting quadrature encoder sampling and Hall-sensor decoding for BLDC commutation feedback. The four USART channels split between a CAN-FD controller via SPI, a LIN transceiver, and a debug UART. 64 KB of Flash accommodates IEC 60730 class B self-test routines for white goods.
推荐
推荐产品汇总
工程参考数据： ATXMEGA64D3-MH ——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 | ATXMEGA32D3-MH | ATXMEGA16D4-MH | ATXMEGA64D4-MH | ATXMEGA64A4U-MH | ATXMEGA128D4-MH |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-64 (9x9 mm) | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same |
| Flash Memory | 64 KB | 32 KB | 16 KB | 64 KB | 64 KB | 128 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 8 KB | 4 KB | 8 KB |
| EEPROM | 2 KB | 1 KB | 1 KB | 2 KB | 2 KB | 2 KB |
| Maximum Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| USB Peripheral | Yes (device) | Yes (device) | Yes (device) | Yes (device) | Yes (host + device) | Yes (device) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
关键差异点
- Lowest minimum supply voltage in the ATXMEGA QFN-64 family （对比 ATXMEGA64A3-AU)
- Highest ADC sample rate among same-package XMEGA D3 parts （对比 ATXMEGA64A3-AU)
- Native USB device peripheral without external PHY （对比 ATMEGA328P-AUR)
设计说明
Provide 100 nF plus 1uF ceramic decoupling on every AVDD/DVDD pin pair, placed within 5 mm of the package pads. The XMEGA D3 family is sensitive to AVCC ripple - injecting switching noise from a DC-DC converter into AVDD will degrade the 12-bit ADC's effective ENOB. Use a ferrite bead between the digital 3V3 rail and the AVDD pin, and route the analog ground star-pattern back to the exposed thermal pad.
The QFN-64 (9x9 mm) exposed thermal pad must be soldered to a continuous ground copper pour on the top layer. Without a proper thermal pad, junction-to-ambient thermal resistance rises by ~30-50% and the device may throttle or fail in enclosed industrial housings. Stencil aperture for the EP should be split into 4-9 smaller apertures to reduce solder voiding to under 5%.
The PDI (Program and Debug Interface) signals PDI_DATA and PDI_CLK must be brought out to a 2x3 or 1x6 header with no series resistors - the AVR/XMEGA PDI protocol to drive the lines actively. Adding series resistors to PDI pins will prevent programming. Keep the trace length under 50 mm and avoid stubs; route them away from switching power and PWM signals to prevent in-circuit debug noise.
Do not assume JTAG is available on the ATXMEGA D3 - only PDI is present. If your toolchain expects JTAG, switch to Atmel Studio 7 or MPLAB X with an Atmel-ICE debugger. Lock-bit programming without PDI recovery can brick the device; always leave the boot section enabled and test PDI access before setting lock bits in production firmware.
合规信息
RoHS and REACH compliant per DigiKey product listing. Not AEC-Q100 qualified - this is a commercial/industrial MCU. Halogen-free per Microchip green-compliance policy.
