ATXMEGA128D4-AU - 128KB Flash XMEGA AVR MCU 32MHz 44TQFP | Microchip
料号： ATXMEGA128D4-AU ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.85 | $7.85 |
| 10 | $7.07 | $70.70 |
| 100 | $6.3 | $630.00 |
| 500 | $5.65 | $2,825.00 |
| 1,000 | $5.05 | $5,050.00 |
ATXMEGA128D4-AU 概述
An 8/16-bit AVR XMEGA microcontroller is an advanced member of Microchip's AVR family combining 8-bit code density with 16-bit peripheral datapaths. It belongs to the broader class of microcontrollers (MCUs) within embedded processors and semiconductors, designed for deterministic real-time control with very low active and sleep-mode power. The XMEGA D4 sub-family specifically targets low-power mixed-signal applications requiring moderate pin counts and rich peripheral integration, sitting above tinyAVR and megaAVR in the Atmel/Microchip MCU hierarchy.
Key features include the four-channel event system for inter-peripheral signalling without CPU intervention, a programmable multi-level interrupt controller for deterministic response, a 12-bit 2 MSPS ADC with optional gain stage, and a hardware AES/DES cryptographic engine. The 8 KB boot section allows secure bootloader updates, while the read-while-write Flash enables live firmware upgrades without halting execution. Power-saving features include five sleep modes, a 1.5 µA real-time-counter backup mode, and a peripheral event system that can wake the CPU autonomously.
Typical applications include industrial control panels, sensor hubs, low-power wireless sensor nodes, motor control, smart metering, USB device peripherals, consumer white goods, and human-machine interface (HMI) touch panels. The wide 1.6-3.6 V operating range and integrated peripherals make it well suited to battery-powered and energy-harvesting designs.
Designers should provide a 0.1 µF decoupling capacitor adjacent to each VCC pin, route analog and digital grounds separately, and observe the 32 MHz maximum system clock. For firmware development, Microchip's Atmel Studio 7 and MPLAB X IDE with the AVR/GNU toolchain target this device directly.
直接替换替代料： ATXMEGA128D4-AU ——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： ATXMEGA128D4-AU （相同外形与封装尺寸） ——差异在于 Core Architecture, Package, ADC Resolution, Boot Code Section, EEPROM.
快速对比工具——选择替代料号进行并排对比：
ATXMEGA128A4U-AUR
✅ 直接替换✓ 有现货
$5.45 / 个
查看数据手册 →ATXMEGA64D4-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA32D4-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATMEGA2560-16AU
✅ 直接替换✓ 有现货
$8.87 / 个
查看数据手册 →ATSAM3U4EA-CU
✓ 有现货
$12.05 / 个
查看数据手册 →ATXMEGA128D4-AU 最大额定值与电气特性
| Core Architecture | AVR XMEGA (8/16-bit) |
| Program Memory (Flash) | 128 KB |
| Boot Code Section | 8 KB |
| EEPROM | 2 KB |
| SRAM | 8 KB |
| Maximum CPU Clock | 32 MHz |
| Supply Voltage Range | 1.6 V to 3.6 V |
| 工作温度 | -40C to +85C (industrial) |
| General-Purpose I/O Pins | 34 |
| 封装 | 44-pin TQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| USART | 2 |
| TWI (I2C) Interfaces | 2 |
| SPI Interfaces | 2 |
| 16-bit Timer/Counters | 4 |
| ADC | 12-bit, up to 2 MSPS |
| Crypto Accelerator | AES and DES |
| Event System Channels | 4 |
| RoHS 状态 | Compliant |
| MSL 等级 | 3 |
ATXMEGA128D4-AU 44-pin tqfp (10x10 mm) 引脚配置指南
ATXMEGA128D4-AU（44-pin tqfp (10x10 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： ATXMEGA128D4-AU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATXMEGA128D4-AU 适用于 6 应用s: Industrial Sensor Hub, Smart Metering and Energy Monitoring, USB Human Interface Device (with companion), Battery-Powered Wearable Device, Motor Control and BLDC Driver, IoT Sensor Node with Secure Boot.
Industrial Sensor Hub
The ATXMEGA128D4-AU fits industrial sensor hubs through its 12-bit 2 MSPS ADC, two TWI (I2C) interfaces, and four 16-bit timer/counters, allowing simultaneous sampling of multiple analog sensors with deterministic timing. The 128 KB Flash hosts sensor-fusion firmware and protocol stacks (Modbus, IO-Link) while 8 KB SRAM holds time-series buffers. The 1.6-3.6 V supply range supports 3.3 V regulated industrial rails. The event system routes ADC conversions directly to DMA without CPU wakeup, cutting active duty cycle in battery-backed remote sensors.
推荐
Smart Metering and Energy Monitoring
The ATXMEGA128D4-AU's 128 KB Flash supports DLMS/COSEM or Open Smart Grid Protocol stacks while the hardware AES-128 accelerator secures communications. Its 12-bit ADC at 2 MSPS accurately samples current shunts and voltage dividers for class-0.5 metering accuracy. The four 16-bit timers drive tamper-detection inputs and metrology pulse outputs. Low-power sleep modes drop consumption below 1.5 µA with the RTC running, enabling 20+ year battery life on lithium cells used in gas and water meters.
推荐
USB Human Interface Device (with companion)
Although the D4 lacks native USB, the ATXMEGA128D4-AU can implement low-speed USB via the on-chip USART in software-bitbang mode or by pairing with an external USB bridge like the AT42QT2120. The 8 KB SRAM and 128 KB Flash comfortably host HID stacks and capacitive-touch decoders. The event system wakes the CPU on touch events without polling, while AES hardware accelerates secure pairing for wireless HID bridges.
推荐
Battery-Powered Wearable Device
The ATXMEGA128D4-AU suits wearables because of its deep-sleep current below 1.5 µA with RTC backup and the 1.6 V minimum supply that lets it run from nearly-depleted Li-ion cells. Its 34 GPIOs drive small OLEDs and capacitive-touch electrodes while two TWI ports interface to biometric sensors (heart-rate, SpO2). The 32 MHz peak performance executes DSP-style filtering for sensor fusion in real time. Compact 10x10 mm TQFP package fits wrist-worn form factors.
推荐
Motor Control and BLDC Driver
The ATXMEGA128D4-AU's four 16-bit timer/counters generate complementary PWM with dead-time insertion for BLDC and PMSM motors, while its 12-bit ADC samples back-EMF and phase currents synchronously. The event system triggers ADC conversions from timer compare events with zero CPU jitter, critical for field-oriented control loops. 8 KB SRAM holds observer state, and 128 KB Flash supports complex FOC and sensorless startup algorithms. Industrial -40C to +85C operation suits factory-floor deployments.
推荐
IoT Sensor Node with Secure Boot
The ATXMEGA128D4-AU's hardware AES/DES engine secures MQTT-SN or CoAP payloads over sub-GHz radios, while the 8 KB boot section enables secure bootloader updates for OTA firmware. Two USARTs drive an external LoRa or Sigfox transceiver and a debug console. With 1.6 V minimum supply, the device runs directly from energy-harvesting sources (solar, thermal). The event system wakes the CPU only when a transmission buffer is ready, maximizing battery life in remote IoT deployments.
推荐
推荐产品汇总
工程参考数据： ATXMEGA128D4-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 | ATXMEGA128A4U-AUR | ATXMEGA64D4-AU | ATXMEGA32D4-AU |
|---|---|---|---|---|
| Package | TQFP-44 (10x10 mm) | TQFP-44 - same | TQFP-44 - same | TQFP-44 - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 128 KB | 128 KB | 64 KB (-50%) | 32 KB (-75%) |
| SRAM | 8 KB | 8 KB | 4 KB (-50%) | 4 KB (-50%) |
| EEPROM | 2 KB | 2 KB | 2 KB | 1 KB (-50%) |
| Maximum Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V | 1.6 V to 3.6 V |
| USB Support | No (external required) | Yes (USB 2.0 FS) | No | No |
| GPIO Count | 34 | 34 | 34 | 34 |
关键差异点
- Largest Flash in 44-pin XMEGA D4 family （对比 ATXMEGA64D4-AU)
- Integrated hardware AES/DES crypto （对比 ATMEGA328P-AUR)
- Same-brand pin-compatible upgrade path （对比 ATXMEGA128A4U-AUR)
设计说明
Place a 0.1 µF decoupling capacitor within 5 mm of each VCC/AVCC pin, and add a 10 µF bulk capacitor on the main supply rail. The ATXMEGA128D4-AU has separate analog (AVCC) and digital (VCC) supplies; tie them together at the regulator output with a ferrite bead if the design mixes sensitive analog and noisy digital loads. AREF should be decoupled with 10 nF when using internal reference.
Route the PDI (Program and Debug Interface) signals to a 6-pin header with GND, VCC, PDI_DATA, PDI_CLK, and /RESET brought out for Atmel-ICE or JTAGICE3 in-circuit programming. Keep PDI traces short (under 50 mm) and shielded with ground. The 44-pin TQFP exposed pad (if present) should be soldered to a copper pour tied to GND for thermal dissipation and mechanical stability.
Do not exceed 32 MHz system clock or 3.6 V VCC. The brown-out detector (BOD) should be enabled in firmware with a threshold appropriate to the system clock (e.g., 2.7 V BOD for full-speed operation). The 8 KB SRAM is shared with the stack and heap; using -Os optimization and avoiding deep printf buffers is essential at high stack usage.
合规信息
RoHS and REACH compliance per Microchip product page; not AEC-Q100 qualified (commercial/industrial grade).