ATXMEGA64D4-MH - 32MHz AVR XMEGA 64KB MCU | Microchip
Référence : ATXMEGA64D4-MH ✓ ActifATXMEGA64D4-MH Présentation
An AVR XMEGA microcontroller is an 8/16-bit embedded-processing device built around the enhanced AVR RISC architecture. Unlike a general-purpose microprocessor, it integrates flash memory, SRAM, EEPROM, interrupt control, timers, serial interfaces, and analog peripherals into one low-power component. The ATXMEGA64D4 family provides deterministic event handling and flexible timer resources for applications that need more control capability than a basic 8-bit MCU without moving to a more complex processor architecture.
Key device features include 64 KB of ISP flash with read-while-write operation, 2 KB of EEPROM, and 4 KB of SRAM. The four-channel event system, programmable multilevel interrupt controller, 34 general-purpose I/O lines, and four flexible 16-bit timer/counters support responsive control tasks. Two USARTs and two two-wire serial interfaces provide multiple options for external sensors, displays, data acquisition equipment, and industrial communications links.
The device operates from 1.6 V to 3.6 V and includes a 16-bit real-time counter with separate and combined 32-bit counters. Its four timer/counter modules include compare and PWM channels, while the event system can route signals between peripherals without excessive interrupt-service overhead. These characteristics support simultaneous sensing, timing, communications, and actuator-control functions within one compact package.
Typical uses include industrial control modules, sensor-hub boards, data loggers, motor-control peripherals, building-automation interfaces, communications equipment, and compact test-and-measurement products. The 44-VQFN footprint is particularly useful when board area is constrained, although its fine pitch requires careful PCB assembly and exposed-pad thermal management.
For a new design, route the VQFN exposed pad to a properly sized ground plane, place decoupling capacitors close to the supply pins, and confirm the board footprint against the manufacturer pinout drawing. Firmware should use the documented XMEGA clock, event-system, timer, and USART configuration registers. Because no explicit programming-voltage or clock-configuration values are listed on the product page, use the device data sheet and selected programming tool documentation before finalizing board and firmware settings.
This product page organizes the core MCU specifications, same-package alternatives, application guidance, and design considerations into a selection-focused reference. It also distinguishes verified product attributes from unresolved details so engineers can evaluate the ATXMEGA64D4-MH against other AVR XMEGA D4 choices before committing a board or production BOM.
Alternatives de remplacement direct pour ATXMEGA64D4-MH — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATXMEGA64D4-MH (même facteur de forme et même empreinte) — différant par Package, Flash Memory, SRAM, Core Architecture, Event System Channels.
ATXMEGA64D4-AH
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATXMEGA64A4-AH
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATXMEGA64A4-MH
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATXMEGA128D4-AH
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATXMEGA128D4-MH
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →ATXMEGA64D4-MH Valeurs maximales et caractéristiques électriques
| Product Type | 8/16-bit AVR XMEGA D4 microcontroller |
| Fréquence d'horloge maximale | 32 MHz |
| Flash Memory | 64 KB |
| Flash Organization | 32K x 16 bits |
| Boot Loader Section | 4 KB |
| EEPROM | 2 KB |
| SRAM | 4 KB |
| Operating Voltage Range | 1.6 V to 3.6 V |
| General-Purpose I/O Lines | 34 lines |
| Event System Channels | 4 channels |
| Timer/Counter Count | 4 x 16-bit flexible timer/counter |
| USART Count | 2 |
| Two-Wire Serial Interface Count | 2 |
| Real-Time Counter | 16-bit with separate and combined 32-bit counters |
| Boîtier | 44-pin VQFN, 7 x 7 mm |
| Type de montage | Surface mount |
| Program Memory Type | In-system programmable flash with read-while-write |
| Interrupt Controller | Programmable multilevel interrupt controller |
Guide de configuration des broches du ATXMEGA64D4-MH 44-pin vqfn, 7 x 7 mm
Configuration des broches du ATXMEGA64D4-MH (boîtier 44-pin vqfn, 7 x 7 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour ATXMEGA64D4-MH.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATXMEGA64D4-MH convient pour 6 applications: Industrial Sensor Hub, Building Automation Controller, Data Logger and Condition Monitor, Motor Control and PWM Peripheral, Communications Interface Module, Compact Test and Measurement Controller.
Industrial Sensor Hub
The ATXMEGA64D4-MH fits a compact sensor hub that must acquire measurements, format information, and communicate with local equipment. Its 32 MHz AVR core and 64 KB flash provide room for drivers and protocol handling, while 4 KB SRAM supports working buffers. The four-channel event system can connect sensor, timer, and communications events without routing every occurrence through the main interrupt path. Two USARTs and two two-wire serial interfaces allow simultaneous use of RS-232, UART sensors, EEPROMs, or other serial peripherals. Operating from 1.6 V to 3.6 V also supports low-voltage sensor nodes when the external transceiver levels match the selected MCU I/O limits.
Recommandé
Building Automation Controller
The ATXMEGA64D4-MH is well suited to building-automation nodes that coordinate switches, sensors, and serial equipment. Its 34 general-purpose I/O lines offer broad control and monitoring capability without requiring a large external interface device, while the four flexible 16-bit timer/counters support periodic sampling, timing, and PWM outputs. The event system can link peripheral events for deterministic operation, and the programmable multilevel interrupt controller helps prioritize time-sensitive tasks. With 64 KB flash and 4 KB SRAM, the device can host communication logic, configuration handling, and application state within a compact 7 x 7 mm VQFN footprint.
Recommandé
Data Logger and Condition Monitor
The ATXMEGA64D4-MH can serve as the local controller in a data logger or condition-monitoring system that records sensor events and maintains operating state. Its 2 KB EEPROM provides nonvolatile storage for configuration and calibration information, while 4 KB SRAM supports short acquisition buffers and protocol processing. The 32 MHz processing speed supports responsive filtering and event handling, and the programmable multilevel interrupt controller allows urgent measurements or faults to take priority. Two USARTs and two two-wire serial interfaces give the designer flexibility to connect an external communications module, memory device, or sensing front end.
Recommandé
Motor Control and PWM Peripheral
The ATXMEGA64D4-MH is appropriate for a compact motor-control or actuator peripheral built around timed PWM generation and digital feedback. Four flexible 16-bit timer/counters provide compare and PWM channels for motion sequencing, while the event system can coordinate timer events with external input channels and interrupts. The 32 MHz core leaves processing capacity for position logic, diagnostics, and communications beyond the basic timing task. A 44-pin VQFN reduces board area compared with larger leaded packages, although accurate current sensing, thermal analysis, and careful exposed-pad layout remain essential for a reliable power stage.
Recommandé
Communications Interface Module
The ATXMEGA64D4-MH can act as the protocol-processing MCU in a compact communications module because it provides two USARTs and two two-wire serial interfaces alongside a 32 MHz AVR core. Those interfaces can support a host UART, field-bus transceiver, sensor network, or configuration port when the associated protocol and electrical standards are implemented in firmware or external hardware. The four-channel event system is useful for coordinating receive, transmit, timeout, and periodic scheduling activity, reducing the need for polling. Its 64 KB flash also gives communications firmware and protocol tables more room than a 32 KB-class XMEGA D4 device.
Recommandé
Compact Test and Measurement Controller
The ATXMEGA64D4-MH fits compact test and measurement equipment that coordinates timing, stimulus, and serial reporting. Four 16-bit timer/counters provide accurate intervals, capture, compare, and PWM functions, while the four-channel event system can coordinate measurement and control signals. The 64 KB flash supports instrument firmware, calibration tables, and communication handlers, and 2 KB EEPROM can retain configuration data. Two USARTs support host and peripheral communication, while two two-wire interfaces simplify expansion to compatible serial devices. The 7 x 7 mm VQFN is useful for dense instruments, but precision analog performance depends on the external signal chain rather than the digital MCU alone.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATXMEGA64D4-MH — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATXMEGA64D4-AH | ATXMEGA64A4-AH | ATXMEGA64A4-MH | ATXMEGA128D4-AH | ATXMEGA128D4-MH |
|---|---|---|---|---|---|---|
| Package | 44-VQFN (7 x 7 mm) | 44-VQFN (7 x 7 mm) | 44-VQFN (7 x 7 mm) | 44-VQFN (7 x 7 mm) | 44-VQFN (7 x 7 mm) | 44-VQFN (7 x 7 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 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 |
Principaux différenciateurs
- Balanced 64 KB memory configuration (vs ATXMEGA32D4-MHR)
- Lower flash use than the 128D4 option (vs ATXMEGA128D4-MH)
- 4 KB SRAM is sufficient for compact control workloads (vs ATXMEGA128D4-MH)
- Four timer/counters and a four-channel event system (vs ATXMEGA32D4-MHR)
Notes de conception
Use the manufacturer 44-VQFN footprint and pin definitions when laying out the board. Place the device's exposed pad on a dedicated ground-copper region with the recommended via pattern, then connect supply bypass capacitors directly to the relevant power pins. Maintain short, symmetric high-speed clock and serial routes, and use a solid ground plane to reduce loop area and return-path discontinuity.
Design the 1.6 V to 3.6 V supply with low-noise decoupling and verify startup, reset, and operating behavior across the intended load range. External peripheral currents should not be sourced from MCU supply pins unless the package power limits and thermal design explicitly allow it. Use separate local bypass paths for each supply group and keep switching-regulator routing away from sensitive clock and serial inputs.
Do not select a replacement solely from the ATxmega64D4 family name. Confirm the complete orderable suffix, 44-pin VQFN footprint, exposed-pad requirements, temperature range, clock configuration, and programming interface. Firmware written for one silicon revision should also be regression-tested against the alternate part because peripheral behavior and initialization requirements can change within an XMEGA family.
Treat the 32 MHz clock path as a signal-integrity-sensitive route. Keep it short, avoid crossing noisy power-converter paths, and follow the recommended grounding and decoupling arrangement. Serial interfaces should have controlled return paths, and unused inputs should be configured to prevent floating-state current. Validate final signal timing and power integrity with the intended clock source, programmed firmware, and production PCB stack-up.
Informations de conformité
Compliance attributes were not stated on the product-page and distributor data used for this record. Confirm the current declarations and qualification status with the manufacturer before procurement or production release.
