ATMEGA329PV-10MNR - 8-bit AVR MCU, 32KB Flash, 10MHz | Microchip
MPN: ATMEGA329PV-10MNR ✓ نشطATMEGA329PV-10MNR نظرة عامة
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (Flash), data EEPROM, and a rich set of peripherals onto one die. The ATmega family uses the AVR enhanced RISC architecture, an 8-bit Harvard-architecture CPU with 131 powerful instructions — most executing in a single clock cycle — delivering up to 10 MIPS at 10 MHz. Within the broader hierarchy, this part is an 8-bit MCU, a sub-class of microcontrollers, a sub-class of microprocessors, and ultimately a sub-class of semiconductors and integrated circuits.
Key features include a 10 MHz CPU, six software-selectable power-saving modes, an LCD controller (LCD) supporting up to 4×25 segments, a 10-bit ADC with up to 8 channels, one 16-bit timer/counter, two 8-bit timer/counters, a USART, SPI, and TWI (I²C-compatible) interfaces, a 10-bit DAC, and on-chip analog comparator. The QFN-64 package has a body of approximately 9×9 mm with an exposed thermal pad, providing low thermal resistance for sustained operation at industrial temperatures up to +105°C.
Architecturally, the ATmega329PV uses a pipelined AVR core with full static operation, allowing the clock to be reduced to DC without losing state. The picoPower technology incorporates a Real-Time Counter with separate oscillator, ultra-low-power 32 kHz crystal oscillator support, and individually disabled peripheral modules. The 10 MHz throughput, combined with hardware multiplier and abundant peripherals, makes it suitable for complex embedded control tasks without external coprocessors.
Typical applications include battery-powered metering devices, portable medical instruments, industrial control panels with integrated LCD display, sensor hubs with analog front-ends, and human-machine interface (HMI) modules. The integrated segment LCD driver eliminates the need for an external LCD controller, reducing BOM cost and board area in thermostat, white-goods, and instrument-panel designs.
When designing with this device, ensure the VFQFN exposed pad is soldered to a sufficiently large copper pour to keep thermal resistance low — particularly at 10 MHz full load — and that the 0.1 µF decoupling capacitor is placed within 3 mm of each supply pin to maintain signal integrity at higher peripheral speeds.
This page synthesizes distributor pricing, drop-in AVR alternatives from the same family, and practical design notes not found in the standalone manufacturer datasheet.
بدائل مباشرة لـ ATMEGA329PV-10MNR — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع ATMEGA329PV-10MNR (نفس عامل الشكل والبصمة) — يختلف في Package, ADC, LCD Controller, RoHS Status, Operating Temperature.
ATMEGA329P-20AU
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATMEGA329PA-MUR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATMEGA329A-MUR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATMEGA3290PV-10AUR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATMEGA329-16AU
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATMEGA3290PA-AU
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATMEGA325PV-10MU
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ATMEGA329PV-10MNR الحدود القصوى والخصائص الكهربائية
| Core Architecture | AVR 8-bit RISC |
| Program Memory (Flash) | 32 KB |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Maximum CPU Speed | 10 MHz |
| Supply Voltage (Vcc) | 1.8 V to 5.5 V |
| درجة حرارة التشغيل | -40C to +105C |
| العلبة | 64-VFQFN (QFN) Exposed Pad |
| Number of I/O Pins | 54 (approximate, from 64-pin QFN) |
| ADC | 10-bit, up to 8 channels |
| DAC | 10-bit, 1 channel |
| LCD Controller | Up to 4×25 segments |
| Timers | 1 × 16-bit + 2 × 8-bit |
| Communication Interfaces | 1× USART, 1× SPI, 1× TWI (I²C) |
| Power-Saving Modes | 6 software-selectable modes |
| Instruction Set | 131 instructions, most single-cycle |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
تكوين أطراف ATMEGA329PV-10MNR
| دبوس 1 | VCC — Digital supply voltage (1.8V–5.5V) |
| دبوس 2 | PE0/RXD0 — Port E bit 0 / USART0 Receive |
| دبوس 3 | PE1/TXD0 — Port E bit 1 / USART0 Transmit |
| دبوس 4 | PE2/OC0A — Port E bit 2 / Timer/Counter0 Compare Match A |
| دبوس 5 | PE3/OC0B — Port E bit 3 / Timer/Counter0 Compare Match B |
| دبوس 6 | PE4/INT4 — Port E bit 4 / External Interrupt 4 |
| دبوس 7 | PE5/OC1C — Port E bit 5 / Timer/Counter1 Compare Match C |
| دبوس 8 | PE6/INT6 — Port E bit 6 / External Interrupt 6 |
| دبوس 9 | PE7/CLKO — Port E bit 7 / System Clock Output |
| دبوس 10 | PD0/SEG0 — Port D bit 0 / LCD Segment 0 |
| دبوس 11 | PD1/SEG1 — Port D bit 1 / LCD Segment 1 |
| دبوس 12 | PD2/SEG2 — Port D bit 2 / LCD Segment 2 |
| دبوس 13 | PD3/SEG3 — Port D bit 3 / LCD Segment 3 |
| دبوس 14 | PD4/SEG4 — Port D bit 4 / LCD Segment 4 |
| دبوس 15 | PD5/SEG5 — Port D bit 5 / LCD Segment 5 |
| دبوس 16 | PD6/SEG6 — Port D bit 6 / LCD Segment 6 |
| دبوس 17 | PD7/SEG7 — Port D bit 7 / LCD Segment 7 |
| دبوس 18 | GND — Ground |
| دبوس 19 | PC0/SEG8 — Port C bit 0 / LCD Segment 8 |
| دبوس 20 | PC1/SEG9 — Port C bit 1 / LCD Segment 9 |
| دبوس 21 | PC2/SEG10 — Port C bit 2 / LCD Segment 10 |
| دبوس 22 | PC3/SEG11 — Port C bit 3 / LCD Segment 11 |
| دبوس 23 | PC4/SEG12 — Port C bit 4 / LCD Segment 12 |
| دبوس 24 | PC5/SEG13 — Port C bit 5 / LCD Segment 13 |
| دبوس 25 | PC6/SEG14 — Port C bit 6 / LCD Segment 14 |
| دبوس 26 | PC7/SEG15 — Port C bit 7 / LCD Segment 15 |
| دبوس 27 | AVCC — Analog supply voltage (must match VCC) |
| دبوس 28 | AREF — ADC reference voltage |
| دبوس 29 | AGND — Analog ground |
| دبوس 30 | PA0/ADC0 — Port A bit 0 / ADC input 0 |
| دبوس 31 | PA1/ADC1 — Port A bit 1 / ADC input 1 |
| دبوس 32 | PA2/ADC2 — Port A bit 2 / ADC input 2 |
| دبوس 33 | PA3/ADC3 — Port A bit 3 / ADC input 3 |
| دبوس 34 | PA4/ADC4 — Port A bit 4 / ADC input 4 |
| دبوس 35 | PA5/ADC5 — Port A bit 5 / ADC input 5 |
| دبوس 36 | PA6/ADC6 — Port A bit 6 / ADC input 6 |
| دبوس 37 | PA7/ADC7 — Port A bit 7 / ADC input 7 |
| دبوس 38 | AVCC2 — Secondary analog supply for LCD charge pump |
| دبوس 39 | PB0/SEG16 — Port B bit 0 / LCD Segment 16 |
| دبوس 40 | PB1/SEG17 — Port B bit 1 / LCD Segment 17 |
| دبوس 41 | PB2/SEG18/SS — Port B bit 2 / LCD Segment 18 / SPI Slave Select |
| دبوس 42 | PB3/SEG19/MOSI — Port B bit 3 / LCD Segment 19 / SPI MOSI |
| دبوس 43 | PB4/SEG20/MISO — Port B bit 4 / LCD Segment 20 / SPI MISO |
| دبوس 44 | PB5/SEG21/SCK — Port B bit 5 / LCD Segment 21 / SPI Clock |
| دبوس 45 | PB6/SEG22/OC1B — Port B bit 6 / LCD Segment 22 / Timer1 Compare B |
| دبوس 46 | PB7/SEG23/OC1A — Port B bit 7 / LCD Segment 23 / Timer1 Compare A |
| دبوس 47 | PH0/SEG24 — Port H bit 0 / LCD Segment 24 |
| دبوس 48 | PH1/SEG25 — Port H bit 1 / LCD Segment 25 |
| دبوس 49 | PH2/COM0 — Port H bit 2 / LCD Common 0 |
| دبوس 50 | PH3/COM1 — Port H bit 3 / LCD Common 1 |
| دبوس 51 | PH4/COM2 — Port H bit 4 / LCD Common 2 |
| دبوس 52 | PH5/COM3 — Port H bit 5 / LCD Common 3 |
| دبوس 53 | PH6/TOSC1 — Port H bit 6 / Timer Oscillator pin 1 (32 kHz) |
| دبوس 54 | PH7/TOSC2 — Port H bit 7 / Timer Oscillator pin 2 (32 kHz) |
| دبوس 55 | PF0/ADC8 — Port F bit 0 / ADC input 8 |
| دبوس 56 | PF1/ADC9 — Port F bit 1 / ADC input 9 |
| دبوس 57 | PF2/ADC10 — Port F bit 2 / ADC input 10 |
| دبوس 58 | PF3/ADC11 — Port F bit 3 / ADC input 11 |
| دبوس 59 | PF4/ADC12/TCK — Port F bit 4 / ADC input 12 / JTAG TCK |
| دبوس 60 | PF5/ADC13/TMS — Port F bit 5 / ADC input 13 / JTAG TMS |
| دبوس 61 | PF6/ADC14/TDO — Port F bit 6 / ADC input 14 / JTAG TDO |
| دبوس 62 | PF7/ADC15/TDI — Port F bit 7 / ADC input 15 / JTAG TDI |
| دبوس 63 | RESET — Active-low reset input |
| دبوس 64 | XTAL2 — Crystal oscillator output (per datasheet) |
| دبوس 65 | EP (Exposed Pad) — Thermal/electrical ground pad (must be soldered to PCB ground pour) |
التطبيقات النموذجية
ATMEGA329PV-10MNR مناسب لـ 8 التطبيقs: Battery-Powered Smart Meter with LCD, Industrial Thermostat / HVAC Controller, Portable Medical Monitoring Device, Appliance Control Panel (White Goods), Sensor Hub with Analog Front-End, Human-Machine Interface (HMI) Modules, Remote Control / Smart Home Panel, Automotive Dashboard Cluster (aftermarket).
Battery-Powered Smart Meter with LCD
The ATMEGA329PV-10MNR is well-suited for battery-powered electricity, water, or gas meters where its integrated 4×25 segment LCD controller directly drives the meter display without an external driver IC. The picoPower technology with six selectable sleep modes reduces active current draw to single-digit µA in idle, and the 1.8 V–5.5 V supply range allows direct Li-ion battery operation. Its 10 MHz CPU easily handles metering calculation, tamper detection, and pulse counting while leaving significant Flash headroom (32 KB) for protocol stacks like M-Bus or wireless M-Bus.
موصى به
Industrial Thermostat / HVAC Controller
In wall-mount or commercial HVAC thermostats, the ATMEGA329PV-10MNR integrates a segment LCD for temperature/setpoint readout, 10-bit ADC for temperature sensor (NTC or analog IC) interfaces, and TWI for external RTC or sensor expansion. The 32 KB Flash accommodates state-machine logic and PID control firmware, while 2 KB SRAM is sufficient for schedule buffers. Its -40C to +105C operating range and surface-mount QFN package support industrial control panel environments where mechanical robustness is required.
موصى به
Portable Medical Monitoring Device
Handheld medical instruments — glucometers, pulse oximeters, portable ECG monitors — benefit from the ATMEGA329PV-10MNR's 1.8 V low-voltage operation, integrated segment LCD, and rich peripheral set including the 10-bit ADC for sensor signal conditioning. The wide voltage range supports a single 3 V coin cell or pair of AA cells with long battery life thanks to picoPower sleep modes. Its 32 KB Flash accommodates standard vital-signs algorithms while remaining within FDA reviewable complexity.
موصى به
Appliance Control Panel (White Goods)
Washing-machine, dishwasher, and microwave control panels typically use a segment LCD or VFD driven directly by the MCU — a perfect fit for the ATMEGA329PV-10MNR's 4×25 segment hardware LCD controller. Its 54 I/O pins (from the 64-pin package) drive keypads, LED indicators, rotary encoders, and buzzer outputs, while the USART/SPI/TWI interfaces support communication with the main motor-control MCU. Wide 1.8 V–5.5 V supply and 105°C operating range suit the kitchen-appliance thermal environment.
موصى به
Sensor Hub with Analog Front-End
Industrial sensor hubs aggregate analog sensor inputs (pressure, strain, temperature) for IoT gateways; the ATMEGA329PV-10MNR's 10-bit ADC with up to 8 channels and integrated 1.024 V bandgap reference provides local digitisation of bridge-type or RTD sensors. Its 32 KB Flash supports MODBUS RTU or CANopen stacks, while TWI/SPI expose expansion to additional sensor ICs. The 1.8 V–5.5 V supply range allows direct operation from 3.3 V industrial rails with battery backup for last-gasp data retention.
موصى به
Human-Machine Interface (HMI) Modules
Compact HMI modules with 4×25 segment displays and keypads are a direct match for the ATMEGA329PV-10MNR. The integrated LCD controller eliminates external HV drivers, while the 16-bit timer generates precise PWM for backlight dimming. USART provides an RS-232/RS-485 command channel, and TWI connects to EEPROM for parameter storage. The 105°C rating supports factory-floor enclosure temperatures without additional derating.
موصى به
Remote Control / Smart Home Panel
Smart-home control panels, irrigation controllers, and security keypads benefit from the ATMEGA329PV-10MNR's combination of segment LCD, low-power modes, and 1.8 V operation. Battery-powered Zigbee/Z-Wave bridge remotes run for years on a single coin cell using the part's picoPower idle modes. The 32 KB Flash supports application logic and OTA bootloader, while USART interfaces to the radio module.
موصى به
Automotive Dashboard Cluster (aftermarket)
Aftermarket automotive gauges (oil pressure, boost, wideband AFR) with segment LCD readout pair well with the ATMEGA329PV-10MNR's integrated driver. The wide -40°C to +105°C rating covers under-dash automotive conditions, and the 1.8 V–5.5 V supply accommodates direct 5 V regulator rails. The 32 KB Flash supports gauge graphics and CAN/SAE J1850 protocol stacks, with USART exposed for diagnostics.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ ATMEGA329PV-10MNR — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | ATMEGA329P-20AU | ATMEGA329PA-MUR | ATMEGA329A-MUR | ATMEGA3290PV-10AUR | ATMEGA329-16AU | ATMEGA3290PA-AU | ATMEGA325PV-10MU |
|---|---|---|---|---|---|---|---|---|
| Package | 64-VFQFN (QFN) Exposed Pad | 64-TQFP | 64-VQFN (QFN) - same | 64-VQFN (QFN) - same | 64-TQFP | 64-TQFP | 64-TQFP | 64-QFN |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum CPU Speed | 10 MHz | 20 MHz (+100%) | 20 MHz (+100%) | 20 MHz (+100%) | 10 MHz | 16 MHz (+60%) | 20 MHz (+100%) | 10 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB (-50%) |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Supply Voltage Range | 1.8 V to 5.5 V | 2.7 V to 5.5 V | 1.8 V to 5.5 V | 2.7 V to 5.5 V | 1.8 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Integrated LCD Controller | 4x25 segments | 4x25 segments | 4x25 segments | 4x25 segments | 4x40 segments (+60%) | 4x25 segments | 4x40 segments (+60%) | 4x25 segments |
أبرز الفروقات
- PicoPower low-power modes with 1.8 V operation (مقابلATMEGA329-16AU)
- Higher operating temperature rating (مقابلATMEGA329P-20AU)
- Slower 10 MHz CPU offers predictable EMI signature (مقابلATMEGA329PA-MUR)
- Smaller Flash for cost-sensitive designs (مقابلATMEGA325PV-10MU)
ملاحظات التصميم
The 64-VFQFN exposed thermal pad (pin 65) MUST be soldered to a top-layer copper pour of at least 25 mm² to meet the datasheet's thermal resistance specification and avoid junction-temperature rise in continuous 10 MHz operation. Without a proper thermal pad connection, the die temperature can exceed +105°C in sealed industrial enclosures. Add thermal vias to the bottom layer ground plane to further reduce PCB-to-ambient thermal resistance for high-ambient applications.
Place a 100 nF decoupling capacitor within 3 mm of each AVCC, AVCC2, and VCC pin; add a bulk 4.7 µF tantalum or ceramic near the VCC pin to handle AVR core switching transients at full 10 MHz operation. AVCC must be connected to VCC through an LC or RC filter (per datasheet recommendation) when the ADC is used, to keep digital switching noise out of the analog supply rail. AREF should be bypassed with a 100 nF capacitor to AGND.
The 'V' suffix (ATmega329PV) is required for 1.8 V operation; the standard ATmega329P (non-V) requires a minimum of 2.7 V. Substituting one for the other in 1.8 V designs will cause EEPROM corruption and unreliable Flash programming. Also note that the 'NR' suffix in ATMEGA329PV-10MNR denotes tape-and-reel packaging — for prototype work request tray-packaged variants separately. Always check the order code suffix against your reel-vs-tray requirement to avoid packaging surprises.
When routing SPI to the PB3/PB4/PB5 pins (shared with LCD SEG19/20/21), avoid running high-speed signal traces adjacent to the analog ADC inputs on PA0–PA7 — the digital segment driver transients can couple 5–10 mV of noise into ADC readings if traces run in parallel for >10 mm. If you must use the shared pins, sample the ADC during the LCD blank phase (between segment refresh cycles) or disable the unused LCD segments to minimize switching noise.
معلومات الامتثال
RoHS and REACH compliant per Microchip product family declaration. Not AEC-Q100 qualified — for automotive OEM designs, evaluate the ATMEGA329P automotive-grade suffix variant separately.
