ATMEGA644PV-10MU - 8-bit AVR MCU 64KB Flash 10MHz | Microchip
Référence : ATMEGA644PV-10MU ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.18 | $7,18 |
| 10 | $6.52 | $65,20 |
| 100 | $5.9 | $590,00 |
| 500 | $5.34 | $2 670,00 |
| 1 000 | $4.88 | $4 880,00 |
ATMEGA644PV-10MU Présentation
An 8-bit AVR microcontroller is a single-chip computer built around the AVR enhanced RISC architecture, in which most instructions execute in a single clock cycle. Within the semiconductor hierarchy, it belongs to the microcontroller (MCU) family under embedded processors, integrating CPU, program Flash, data SRAM, EEPROM and peripherals such as timers, USARTs and ADC on one die, eliminating external memory chips in typical embedded control designs.
Key features include 64KB (32K x 16) self-programmable Flash with read-while-write support, 32 general purpose I/O lines, three flexible timers/counters with compare modes and PWM channels, two USARTs for serial communication, a byte-oriented 2-wire serial interface (TWI/I2C), an SPI serial port, and a 10-bit ADC. The picoPower (V) variant emphasizes low active and sleep current for battery-powered designs.
The AVR core uses a Harvard architecture with 32 general purpose working registers directly connected to the ALU, allowing one-cycle execution of most instructions and delivering up to 10 MIPS throughput at the 10 MHz maximum clock. In-System Programming and self-programming support field firmware updates without removing the device from the PCB.
Typical applications include industrial automation nodes, embedded sensor controllers, battery-powered instruments, and communication modules where the 1.8V-capable supply range, 10-bit ADC and dual USARTs fit low-power measurement and control systems.
Design consideration: the picoPower ATmega644PV runs at reduced maximum frequency versus the 20 MHz ATmega644P; verify your clock plan and use the internal calibrated RC oscillator or an external crystal within the 10 MHz limit.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour ATMEGA644PV-10MU — 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 ATMEGA644PV-10MU (même facteur de forme et même empreinte) — différant par EEPROM, RoHS Status, SRAM, Package, Supply Voltage Range.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATMEGA644P-20MQ
✅ Remplacement direct✓ En stock
$2.48 / unité
Voir la fiche technique →ATMEGA644PA-MUR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATMEGA644-20MU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATMEGA644V-10MU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATMEGA1284P-MU
✅ Remplacement direct✓ En stock
$4.1 / unité
Voir la fiche technique →ATMEGA644PV-10MU Valeurs maximales et caractéristiques électriques
| Core Architecture | 8-bit AVR RISC |
| Flash Memory | 64 KB (32K x 16) ISP Flash |
| EEPROM | 2 KB |
| SRAM | 4 KB |
| Fréquence d'horloge maximale | 10 MHz |
| Tension d'alimentation | 1.8 V (picoPower family low-voltage capable) |
| General Purpose I/O | 32 lines |
| ADC Resolution | 10 bit |
| Timers/Counters | 3 (with compare modes and PWM) |
| USART Interfaces | 2 |
| Serial Interfaces | 2-wire (I2C/TWI), SPI |
| Boîtier | 44-VQFN (7x7 mm), exposed pad |
| Température de fonctionnement | -40C to +85C (industrial) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant (green package) |
| In-System Programming | Yes (read-while-write) |
Guide de configuration des broches du ATMEGA644PV-10MU 44-vqfn (7x7 mm), exposed pad
Configuration des broches du ATMEGA644PV-10MU (boîtier 44-vqfn (7x7 mm), exposed pad). 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 ATMEGA644PV-10MU.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATMEGA644PV-10MU convient pour 6 applications: Industrial Automation Nodes, Battery-Powered Sensor Instruments, Embedded Communication Modules, Motor and PWM Control Systems, Home Automation and IoT Nodes, Test and Measurement Equipment.
Industrial Automation Nodes
The ATMEGA644PV-10MU fits industrial control nodes because its 32 GPIO lines, three timers with PWM, and -40C to +85C industrial temperature range cover typical actuator and relay-driving requirements. Dual USARTs allow simultaneous communication with a supervisory PLC or SCADA link and a local RS-485/Modbus bus, while the TWI (I2C) and SPI interfaces connect real-time clocks, EEPROM and sensor front-ends. The 64KB self-programmable Flash supports field firmware updates over the serial link, and the industrial-grade green package withstands factory-floor thermal profiles. Typical circuit role: main MCU running control loops at up to 10 MIPS, with watchdog supervision for fail-safe recovery in unattended equipment.
Recommandé
Battery-Powered Sensor Instruments
As a picoPower device, the ATMEGA644PV-10MU is designed for battery-powered instrumentation: its low-voltage operation down to 1.8V, sleep modes, and low active current extend battery life in portable data loggers and handheld meters. The 10-bit ADC digitizes sensor outputs directly, the async timer supports wake-up from power-save mode on a 32 kHz crystal, and 4KB SRAM buffers measurement records between radio or USART uploads. In these designs the MCU spends most time in power-down, waking on timer or external interrupt to sample, average, and transmit. The 44-VQFN 7x7 mm footprint keeps board area small, and 64KB Flash stores calibration tables and multi-protocol communication stacks without external memory.
Recommandé
Embedded Communication Modules
With two independent USARTs plus SPI and TWI, the ATMEGA644PV-10MU serves as a protocol-conversion controller in embedded communication modules, bridging RS-232/RS-485 field buses to SPI-connected RF transceivers or TWI-connected peripherals. The read-while-write Flash enables bootloaders that update firmware over the communication channel itself, eliminating physical re-programming in deployed nodes. The 64KB program space accommodates protocol stacks such as Modbus plus telemetry framing simultaneously. Circuit role: master MCU managing packet framing, CRC checking, and store-and-forward buffering in the 4KB SRAM. Designers should verify USART baud-rate accuracy from the chosen crystal and enable the USART frame-error detection for noisy industrial links.
Recommandé
Motor and PWM Control Systems
The three timers/counters of the ATMEGA644PV-10MU provide compare-match PWM outputs suitable for driving DC motor H-bridges, servo channels, or LED dimmers, making it a cost-effective motion and power control MCU. At 10 MHz the AVR core delivers up to 10 MIPS, enough for closed-loop control using ADC feedback from current shunts or encoders read via GPIO interrupts. The 64KB Flash holds PID tuning tables and safety state machines, while the watchdog timer enforces fail-safe shutdown on software faults. PWM frequency should be chosen to balance inductor/audible-noise constraints against resolution at the 10 MHz system clock. The exposed-pad VQFN provides good ground integrity for switching-noise immunity.
Recommandé
Home Automation and IoT Nodes
For smart-home and IoT end nodes, the ATMEGA644PV-10MU combines enough memory for sensor fusion and communication stacks with the low power profile required for mains-free operation. Its 10-bit ADC reads temperature, humidity and light sensors; the TWI bus attaches RTCs and environmental sensors; and an SPI-connected radio module provides wireless connectivity. Sleep-mode current dominates overall battery budget, so designs leverage power-down mode with pin-change or timer wake-ups, sampling at intervals and sleeping between transmissions. The 2KB EEPROM stores network addresses and calibration constants across power cycles. The green RoHS-compliant VQFN-44 package supports consumer-grade lead-free assembly for high-volume smart-home production.
Recommandé
Test and Measurement Equipment
In low-cost test and measurement instruments, the ATMEGA644PV-10MU acts as the system controller handling front-panel interfaces, calibration data management, and measurement sequencing. The 10-bit ADC provides coarse acquisition while an external precision ADC on SPI handles high-resolution measurements, with the AVR performing averaging, range scaling, and display driving. 64KB Flash accommodates multi-language menus and compensation tables, and 2KB EEPROM retains calibration constants through power loss. The two USARTs enable PC connectivity for data logging and automated test scripts. Designers should shield analog front-ends from the digital ground using the exposed-pad VQFN grounding, and sample during idle periods to minimize digital switching noise coupling into measurements.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATMEGA644PV-10MU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATMEGA644P-20MQ | ATMEGA644PA-MUR | ATMEGA644-20MU | ATMEGA1284P-MU |
|---|---|---|---|---|---|
| Package | 44-VQFN (7x7 mm) exposed pad | 44-VQFN exposed pad - same | 44-VQFN exposed pad - same | 44-QFN exposed pad - same | 44-VQFN exposed pad - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 16 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB | 4 KB |
| picoPower / Low-Voltage | Yes (V variant, 1.8V capable) | No (standard P) | Yes (PA, 2.5V/3.3V/5V) | No | Yes (picoPower) |
Principaux différenciateurs
- picoPower low-voltage operation (vs ATMEGA644P-20MQ)
- Cost-optimized memory point (vs ATMEGA1284P-MU)
- Newer core revision (vs ATMEGA644V-10MU)
Notes de conception
Estimated: choose the supply voltage against your speed grade. The picoPower PV part is specified for low-voltage operation down to 1.8V, but maximum guaranteed frequency derates with supply voltage per the AVR speed-grade curves in the manufacturer datasheet; running 10 MHz near 1.8V is at the family limit. For mixed 3.3V/5V systems, keep all VCC pins at the same potential and decouple each VCC/GND pair with 100 nF ceramics placed within 3 mm of the pins, plus one 4.7-10 uF bulk capacitor near the exposed pad.
Solder the 44-VQFN exposed pad to a grounded thermal land with an array of thermal vias (approximately 4x4, 0.3 mm drill) connecting to internal ground planes. The exposed pad is the primary ground return for the AVR core and ADC; an unsoldered pad causes erratic resets and degraded ADC accuracy. Follow the Microchip AVR hardware design application notes for QFN escape routing: 0.2-0.25 mm trace widths allow dog-bone escapes on 0.5 mm pitch without via-in-pad.
Verify fuse settings before first programming: the PV part is limited to 10 MHz, so selecting a 16 MHz crystal fuse configuration (valid on 20 MHz grades) runs the device out of specification and can cause instability. Also, the RESET pin can be repurposed as GPIO via fuse - doing so disables ISP reprogramming and requires a high-voltage parallel programmer for recovery. Leave a 6-pin ISP header on production boards for field updates, since the Flash supports read-while-write bootloader operation.
Informations de conformité
FindIC data describes the part as GREEN (RoHS-compliant, lead-free package). REACH and conflict minerals statuses not stated in provided data - request Microchip compliance certificate.