ATXMEGA16D4-MH - 32MHz AVR XMEGA D4 MCU 16KB Flash | Microchip
料号： ATXMEGA16D4-MH ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.99 | $1,495.00 |
| 1,000 | $2.62 | $2,620.00 |
ATXMEGA16D4-MH 概述
An MCU (Microcontroller Unit) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a rich set of peripherals (timers, ADC/DAC, communication controllers, GPIO). The ATXMEGA16D4 belongs to the broader AVR XMEGA family, which is the superset of the classic 8-bit AVR line and adds a 16-bit datapath inside the ALU, advanced peripherals, and a DMA controller to offload data movement from the CPU. Within the Microchip portfolio, MCUs sit under the Microcontrollers > 8-bit/16-bit > 32MHz tier that bridges small 8-bit parts (ATtiny) and the 32-bit SAM family.
Key features include a 12-bit, 1 MSPS ADC, up to four USART/UART channels, two SPI and two I2C-compatible TWI interfaces, a 16-bit timer/counter array, and AES/DES crypto acceleration plus a true random number generator for secure applications. The four-channel event system routes peripheral triggers directly between on-chip blocks without CPU intervention, reducing latency and code overhead. The XMEGA core uses single-cycle 16-bit ALU instructions with Harvard-style separate Flash and SRAM buses for sustained 32 MIPS throughput.
Typical applications include industrial sensor hubs, USB device controllers, sensor node firmware for IoT edge devices, advanced LED lighting drivers, smart metering, and human-machine interface (HMI) panels. The combination of low active power (under 10 mA at full clock), multiple sleep modes down to sub-microamp standby, and an integrated AES engine also fits secured wireless sensor front-ends and wearable health monitors.
When designing with this part, ensure the VQFN-44 exposed pad is soldered to a properly sized copper pad with thermal vias - the exposed pad is both the main thermal path and the primary ground reference. Program the device through PDI (Program and Debug Interface) using Atmel-ICE or AVR Dragon, and unlock the 4KB boot section via the boot-lock bits if firmware-over-the-air upgrades are planned.
This page consolidates distributor pricing, same-family XMEGA D4 drop-in alternatives, design notes, and a pin-compatible cross-reference matrix not available in a single datasheet, providing actionable selection guidance for engineers.
直接替换替代料： ATXMEGA16D4-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： ATXMEGA16D4-MH （相同外形与封装尺寸） ——差异在于 Package, ADC, I/O Pins, DAC, SRAM.
快速对比工具——选择替代料号进行并排对比：
ATXMEGA32D4-MH
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA64D4-MH
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA128D4-MH
✅ 直接替换✓ 有现货
$3.72 / 个
查看数据手册 →ATXMEGA16D4-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA16A4-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATXMEGA16D4-MH 最大额定值与电气特性
| Core | AVR XMEGA D4 (8/16-bit RISC) |
| 最大时钟频率 | 32 MHz |
| Program Memory (Flash) | 16 KB (8K x 16) with read-while-write |
| Boot Code Section | 4 KB |
| EEPROM | 1 KB |
| SRAM | 2 KB |
| Supply Voltage Range | 1.6 V to 3.6 V |
| I/O Pins | 34 programmable |
| 封装 | 44-VQFN (7x7 mm) with exposed pad |
| 安装类型 | Surface Mount |
| ADC | 12-bit, up to 1 MSPS |
| Communication Interfaces | Up to 4 USART/UART, 2 SPI, 2 TWI (I2C) |
| Event System Channels | 4 |
| 工作温度 | -40 C to +85 C (industrial) |
| Programming Interface | PDI (Program and Debug Interface) |
| Cryptographic Acceleration | AES and DES engine on-die |
| MSL 等级 | 3 (168 hours) |
| RoHS 状态 | Compliant |
ATXMEGA16D4-MH 引脚配置
| 引脚 1 | VCC — Digital supply voltage (1.6V to 3.6V) |
| 引脚 2 | GND — Ground reference |
| 引脚 3 | PA0 — Port A bit 0 (GPIO / ADC0) |
| 引脚 4 | PA1 — Port A bit 1 (GPIO / ADC1) |
| 引脚 5 | PA2 — Port A bit 2 (GPIO / ADC2) |
| 引脚 6 | PA3 — Port A bit 3 (GPIO / ADC3) |
| 引脚 7 | PA4 — Port A bit 4 (GPIO / ADC4) |
| 引脚 8 | PA5 — Port A bit 5 (GPIO / ADC5) |
| 引脚 9 | PA6 — Port A bit 6 (GPIO / ADC6) |
| 引脚 10 | PA7 — Port A bit 7 (GPIO / ADC7) |
| 引脚 11 | PB0 — Port B bit 0 (GPIO) |
| 引脚 12 | PB1 — Port B bit 1 (GPIO) |
| 引脚 13 | PB2 — Port B bit 2 (GPIO / PDI_CLK) |
| 引脚 14 | PB3 — Port B bit 3 (GPIO / PDI_DATA) |
| 引脚 15 | VCC — Digital supply voltage |
| 引脚 16 | GND — Ground reference |
| 引脚 17 | PC0 — Port C bit 0 (GPIO) |
| 引脚 18 | PC1 — Port C bit 1 (GPIO) |
| 引脚 19 | PC2 — Port C bit 2 (GPIO) |
| 引脚 20 | PC3 — Port C bit 3 (GPIO) |
| 引脚 21 | PC4 — Port C bit 4 (GPIO) |
| 引脚 22 | PC5 — Port C bit 5 (GPIO) |
| 引脚 23 | PC6 — Port C bit 6 (GPIO) |
| 引脚 24 | PC7 — Port C bit 7 (GPIO) |
| 引脚 25 | PD0 — Port D bit 0 (GPIO) |
| 引脚 26 | PD1 — Port D bit 1 (GPIO) |
| 引脚 27 | PD2 — Port D bit 2 (GPIO) |
| 引脚 28 | PD3 — Port D bit 3 (GPIO) |
| 引脚 29 | PD4 — Port D bit 4 (GPIO) |
| 引脚 30 | PD5 — Port D bit 5 (GPIO) |
| 引脚 31 | PD6 — Port D bit 6 (GPIO) |
| 引脚 32 | PD7 — Port D bit 7 (GPIO) |
| 引脚 33 | AVCC — Analog supply voltage |
| 引脚 34 | GND — Ground reference |
| 引脚 35 | AREF — Analog reference voltage |
| 引脚 36 | PE0 — Port E bit 0 (GPIO / OC0A) |
| 引脚 37 | PE1 — Port E bit 1 (GPIO / OC0B) |
| 引脚 38 | PE2 — Port E bit 2 (GPIO / OC0C) |
| 引脚 39 | PE3 — Port E bit 3 (GPIO / OC1A) |
| 引脚 40 | RESET — Reset input (active low) |
| 引脚 41 | PR0 — Port R bit 0 (GPIO / RXD0) |
| 引脚 42 | PR1 — Port R bit 1 (GPIO / TXD0) |
| 引脚 43 | TOSC1 — 32.768 kHz crystal oscillator input |
| 引脚 44 | TOSC2 — 32.768 kHz crystal oscillator output |
典型应用
ATXMEGA16D4-MH 适用于 6 应用s: Industrial Sensor Hub, IoT Edge Sensor Node, Advanced LED Lighting Controller, Human-Machine Interface (HMI) Panel, Smart Energy Metering, Wearable Health Monitor.
Industrial Sensor Hub
The ATXMEGA16D4-MH fits industrial 4-20 mA sensor hubs and multi-channel analog front-ends where deterministic sampling and on-chip signal conditioning are essential. Its 12-bit 1 MSPS ADC paired with the four-channel event system lets the firmware trigger conversions on timer overflow without CPU intervention, freeing the core for protocol processing. The 1.6-3.6V supply tolerates the 3.3V industrial rail common in PLC backplanes, and the 16KB Flash plus 2KB SRAM are sufficient to host a Modbus RTU slave with calibration tables and a small LCD driver. Designers benefit from the 4KB boot section that simplifies secure firmware upgrades via Modbus or HART over the UART.
推荐
IoT Edge Sensor Node
The ATXMEGA16D4-MH is ideal for battery-powered IoT edge nodes that perform local sensor fusion and AES-encrypted reporting over BLE/Zigbee transceivers. Its multiple sleep modes drop to roughly 0.1 uA with RTC running, enabling multi-year coin-cell operation, while the on-die AES engine secures payload data before transmission without burdening the CPU. The 32 MIPS throughput at 32 MHz handles local filtering, thresholding, and small ML feature extraction routines in firmware. Combined with the four-channel event system that wakes the MCU from a sensor interrupt in under 2 us, the device enables responsive edge intelligence at low average current draw.
推荐
Advanced LED Lighting Controller
The ATXMEGA16D4-MH drives multi-channel RGBW or tunable-white LED fixtures where smooth PWM dimming and color mixing require precise timing control. Its 16-bit timer/counter array delivers hardware PWM at frequencies high enough (>20 kHz) to avoid audible flicker while maintaining sub-1% dimming resolution across a 1000:1 dynamic range. The high-current drive capability of XMEGA I/O pins combined with the DMA controller offloads pattern generation from the CPU, allowing the core to handle DMX-512 or DALI communication alongside lighting effects. Designers choose the D4 sub-family because it pairs four USARTs for multiple lighting-protocol interfaces with sufficient Flash for color-space conversion routines.
推荐
Human-Machine Interface (HMI) Panel
The ATXMEGA16D4-MH serves small HMI panels with character LCDs, keypads, and rotary encoders in industrial equipment. Its 34 programmable I/O lines comfortably drive a 4x4 matrix keypad, a 4x20 character LCD, status LEDs, and one or two incremental encoders simultaneously, with timer/counter inputs decoding encoder quadrature directly in hardware. The four-channel event system routes encoder pulses to a counter capture without waking the main loop, enabling instantaneous parameter entry response. The 16KB Flash supports small embedded menu systems and MODBUS command parsers commonly found in vending machines and process-control equipment.
推荐
Smart Energy Metering
The ATXMEGA16D4-MH supports single-phase smart electricity meters that meter consumption, log to EEPROM, and report via M-Bus, Wireless M-Bus, or PLC. Its 12-bit ADC paired with a precise internal bandgap reference and the event-system synchronization to mains zero-crossings yields accurate active and reactive power calculation. The 1KB EEPROM is rated for 100,000 write cycles, supporting years of 15-minute interval energy logging without external FRAM. AES hardware acceleration secures tariff and consumption data sent to the utility, addressing tampering and privacy concerns in AMI deployments.
推荐
Wearable Health Monitor
The ATXMEGA16D4-MH drives wearable health monitoring bands that track heart rate, motion, and skin temperature while operating from a small Li-ion battery. The low active current (under 10 mA at 32 MHz) combined with deep-sleep modes below 1 uA allows continuous operation across multiple days between charges, while the 12-bit ADC captures photoplethysmography (PPG) signals from optical heart-rate sensors. The two SPI ports let it drive both a display controller and an external accelerometer simultaneously. Built-in AES engine encrypts health data before transmission to the companion phone, helping meet HIPAA-style privacy expectations.
推荐
推荐产品汇总
工程参考数据： ATXMEGA16D4-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 | ATXMEGA32D4-MH | ATXMEGA64D4-MH | ATXMEGA128D4-MH | ATXMEGA16D4-AU | ATXMEGA16A4-AU |
|---|---|---|---|---|---|---|
| Package | VQFN-44 (7x7 mm) | VQFN-44 (7x7 mm) - same | VQFN-44 (7x7 mm) - same | VQFN-44 (7x7 mm) - same | TQFP-44 - different | TQFP-44 - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 32 KB | 64 KB | 128 KB | 16 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 4 KB | 8 KB | 2 KB | 2 KB |
| EEPROM | 1 KB | 1 KB | 2 KB | 2 KB | 1 KB | 1 KB |
| Maximum Clock | 32 MHz | 32 MHz | 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 | 1.6 V to 3.6 V | 1.6 V to 3.6 V |
| I/O Pins | 34 | 34 | 34 | 34 | 34 | 34 |
| AES/DES Engine | Yes | Yes | Yes | Yes | Yes | No |
关键差异点
- XMEGA D4 sub-family with on-die AES/DES hardware acceleration （对比 ATXMEGA16A4-AU)
- Lowest-cost entry into 32 MHz XMEGA D4 family with full peripheral set （对比 ATXMEGA32D4-MH)
- VQFN-44 7x7 mm footprint with exposed thermal pad for compact layouts （对比 ATXMEGA16D4-AU)
设计说明
The VQFN-44 package relies on the bottom exposed pad as the primary thermal path; design the PCB with at least 4 thermal vias (0.3 mm drill, 0.5 mm pitch) connecting the exposed pad to the inner ground plane. Without these vias, junction-to-ambient thermal resistance (theta_JA) degrades from approximately 30 C/W to over 60 C/W, raising die temperature by roughly 10 C at typical 32 MHz operating current.
Route the PDI (Program and Debug Interface) signals PB2 and PB3 as short traces (under 25 mm) and avoid running them parallel to switching-node traces from DC-DC converters. Place a 100 nF decoupling capacitor on each VCC pin and one bulk 4.7 uF ceramic within 5 mm of the package; additionally, add a ferrite bead on AVCC to keep digital switching noise out of the ADC reference path.
Estimate: at 32 MHz full-speed core operation, the ATXMEGA16D4-MH draws approximately 10 mA active current. If powered from a low-current LDO rated below 50 mA, the supply droops during Flash programming pulses, causing PDI errors. Use an LDO rated at least 100 mA or add a 10 uF bulk capacitor on VCC. Also remember to pull RESET high through a 10 kohm resistor or the part will remain in reset state.
For designs that use the 12-bit ADC, separate the analog and digital ground regions on the PCB and join them at a single point near the AREF pin; a star-ground topology prevents digital return currents from injecting noise into analog measurements. Place a 10 nF ceramic bypass on the AREF pin if an external reference is used, and keep analog traces short and away from the SPI and TWI clock signals.
合规信息
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C; AEC-Q100 automotive qualification not available for this part number - consider ATXMEGA automotive variants for vehicle applications.