ATMEGA644PV-10MU - 8-bit AVR MCU 64KB Flash 10MHz | Microchip
MPN: ATMEGA644PV-10MU ✓ פעילATMEGA644PV-10MU סקירה
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.
חלופות תחליף ישיר עבור ATMEGA644PV-10MU — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ATMEGA644PV-10MU (אותו גורם צורה וטביעת רגל) — שונים ב EEPROM, RoHS Status, SRAM, Package, Supply Voltage Range.
ATMEGA644P-20MQ
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATMEGA644PA-MUR
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ATMEGA644-20MU
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ATMEGA644V-10MU
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ATMEGA1284P-MU
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ATMEGA644PV-10MU דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | 8-bit AVR RISC |
| Flash Memory | 64 KB (32K x 16) ISP Flash |
| EEPROM | 2 KB |
| SRAM | 4 KB |
| תדר שעון מקסימלי | 10 MHz |
| מתח אספקה | 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 |
| מארז | 44-VQFN (7x7 mm), exposed pad |
| טמפרטורת פעולה | -40C to +85C (industrial) |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant (green package) |
| In-System Programming | Yes (read-while-write) |
מדריך תצורת פינים של ATMEGA644PV-10MU 44-vqfn (7x7 mm), exposed pad
תצורת פינים עבור ATMEGA644PV-10MU (מארזת 44-vqfn (7x7 mm), exposed pad). מעגל משולב דיגיטלי זה כולל GPIO, ממשקי תקשורת (UART, SPI, I2C) ופיני מתח. יש לעיין בגיליון הנתונים של היצרן לפונקציות פינים חלופיות ולאפשרויות תצורה. חיוני לתכנון מערכות משובצות ולפריסת PCB.
אין נתוני פריסת פינים מפורטים עבור ATMEGA644PV-10MU.
עיינו ב- גיליון נתונים עבור תצורת פינים מלאה.
יישומים טיפוסיים
ATMEGA644PV-10MU מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ATMEGA644PV-10MU — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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) |
מבדילים עיקריים
- picoPower low-voltage operation (לעומתATMEGA644P-20MQ)
- Cost-optimized memory point (לעומתATMEGA1284P-MU)
- Newer core revision (לעומתATMEGA644V-10MU)
הערות תכנון
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.
מידע על תאימות
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.