ATMEGA329PV-10MNR - 8-bit AVR MCU, 32KB Flash, 10MHz | Microchip
MPN: ATMEGA329PV-10MNR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.91 | $4.91 |
| 10 | $4.42 | $44.20 |
| 100 | $3.93 | $393.00 |
| 500 | $3.54 | $1,770.00 |
| 1,000 | $3.16 | $3,160.00 |
ATMEGA329PV-10MNR Overview
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.
Drop-in alternatives for ATMEGA329PV-10MNR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATMEGA329PV-10MNR (same form factor and footprint) — differing in Package, ADC, LCD Controller, RoHS Status, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA329P-20AU
✅ Drop-In✓ In Stock
$4.71 / Unit
View Datasheet →ATMEGA329PA-MUR
✅ Drop-In✓ In Stock
$3.85 / Unit
View Datasheet →ATMEGA329A-MUR
✅ Drop-In✓ In Stock
$3.61 / Unit
View Datasheet →ATMEGA3290PV-10AUR
✅ Drop-In✓ In Stock
$4.41 / Unit
View Datasheet →ATMEGA329-16AU
✅ Drop-In✓ In Stock
$8.45 / Unit
View Datasheet →ATMEGA3290PA-AU
✅ Drop-In✓ In Stock
$4.48 / Unit
View Datasheet →ATMEGA325PV-10MU
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →ATMEGA329PV-10MNR Maximum Ratings & Electrical Characteristics
| 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 |
| Operating Temperature | -40C to +105C |
| Package | 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 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ATMEGA329PV-10MNR Pin Configuration
| Pin 1 | VCC — Digital supply voltage (1.8V–5.5V) |
| Pin 2 | PE0/RXD0 — Port E bit 0 / USART0 Receive |
| Pin 3 | PE1/TXD0 — Port E bit 1 / USART0 Transmit |
| Pin 4 | PE2/OC0A — Port E bit 2 / Timer/Counter0 Compare Match A |
| Pin 5 | PE3/OC0B — Port E bit 3 / Timer/Counter0 Compare Match B |
| Pin 6 | PE4/INT4 — Port E bit 4 / External Interrupt 4 |
| Pin 7 | PE5/OC1C — Port E bit 5 / Timer/Counter1 Compare Match C |
| Pin 8 | PE6/INT6 — Port E bit 6 / External Interrupt 6 |
| Pin 9 | PE7/CLKO — Port E bit 7 / System Clock Output |
| Pin 10 | PD0/SEG0 — Port D bit 0 / LCD Segment 0 |
| Pin 11 | PD1/SEG1 — Port D bit 1 / LCD Segment 1 |
| Pin 12 | PD2/SEG2 — Port D bit 2 / LCD Segment 2 |
| Pin 13 | PD3/SEG3 — Port D bit 3 / LCD Segment 3 |
| Pin 14 | PD4/SEG4 — Port D bit 4 / LCD Segment 4 |
| Pin 15 | PD5/SEG5 — Port D bit 5 / LCD Segment 5 |
| Pin 16 | PD6/SEG6 — Port D bit 6 / LCD Segment 6 |
| Pin 17 | PD7/SEG7 — Port D bit 7 / LCD Segment 7 |
| Pin 18 | GND — Ground |
| Pin 19 | PC0/SEG8 — Port C bit 0 / LCD Segment 8 |
| Pin 20 | PC1/SEG9 — Port C bit 1 / LCD Segment 9 |
| Pin 21 | PC2/SEG10 — Port C bit 2 / LCD Segment 10 |
| Pin 22 | PC3/SEG11 — Port C bit 3 / LCD Segment 11 |
| Pin 23 | PC4/SEG12 — Port C bit 4 / LCD Segment 12 |
| Pin 24 | PC5/SEG13 — Port C bit 5 / LCD Segment 13 |
| Pin 25 | PC6/SEG14 — Port C bit 6 / LCD Segment 14 |
| Pin 26 | PC7/SEG15 — Port C bit 7 / LCD Segment 15 |
| Pin 27 | AVCC — Analog supply voltage (must match VCC) |
| Pin 28 | AREF — ADC reference voltage |
| Pin 29 | AGND — Analog ground |
| Pin 30 | PA0/ADC0 — Port A bit 0 / ADC input 0 |
| Pin 31 | PA1/ADC1 — Port A bit 1 / ADC input 1 |
| Pin 32 | PA2/ADC2 — Port A bit 2 / ADC input 2 |
| Pin 33 | PA3/ADC3 — Port A bit 3 / ADC input 3 |
| Pin 34 | PA4/ADC4 — Port A bit 4 / ADC input 4 |
| Pin 35 | PA5/ADC5 — Port A bit 5 / ADC input 5 |
| Pin 36 | PA6/ADC6 — Port A bit 6 / ADC input 6 |
| Pin 37 | PA7/ADC7 — Port A bit 7 / ADC input 7 |
| Pin 38 | AVCC2 — Secondary analog supply for LCD charge pump |
| Pin 39 | PB0/SEG16 — Port B bit 0 / LCD Segment 16 |
| Pin 40 | PB1/SEG17 — Port B bit 1 / LCD Segment 17 |
| Pin 41 | PB2/SEG18/SS — Port B bit 2 / LCD Segment 18 / SPI Slave Select |
| Pin 42 | PB3/SEG19/MOSI — Port B bit 3 / LCD Segment 19 / SPI MOSI |
| Pin 43 | PB4/SEG20/MISO — Port B bit 4 / LCD Segment 20 / SPI MISO |
| Pin 44 | PB5/SEG21/SCK — Port B bit 5 / LCD Segment 21 / SPI Clock |
| Pin 45 | PB6/SEG22/OC1B — Port B bit 6 / LCD Segment 22 / Timer1 Compare B |
| Pin 46 | PB7/SEG23/OC1A — Port B bit 7 / LCD Segment 23 / Timer1 Compare A |
| Pin 47 | PH0/SEG24 — Port H bit 0 / LCD Segment 24 |
| Pin 48 | PH1/SEG25 — Port H bit 1 / LCD Segment 25 |
| Pin 49 | PH2/COM0 — Port H bit 2 / LCD Common 0 |
| Pin 50 | PH3/COM1 — Port H bit 3 / LCD Common 1 |
| Pin 51 | PH4/COM2 — Port H bit 4 / LCD Common 2 |
| Pin 52 | PH5/COM3 — Port H bit 5 / LCD Common 3 |
| Pin 53 | PH6/TOSC1 — Port H bit 6 / Timer Oscillator pin 1 (32 kHz) |
| Pin 54 | PH7/TOSC2 — Port H bit 7 / Timer Oscillator pin 2 (32 kHz) |
| Pin 55 | PF0/ADC8 — Port F bit 0 / ADC input 8 |
| Pin 56 | PF1/ADC9 — Port F bit 1 / ADC input 9 |
| Pin 57 | PF2/ADC10 — Port F bit 2 / ADC input 10 |
| Pin 58 | PF3/ADC11 — Port F bit 3 / ADC input 11 |
| Pin 59 | PF4/ADC12/TCK — Port F bit 4 / ADC input 12 / JTAG TCK |
| Pin 60 | PF5/ADC13/TMS — Port F bit 5 / ADC input 13 / JTAG TMS |
| Pin 61 | PF6/ADC14/TDO — Port F bit 6 / ADC input 14 / JTAG TDO |
| Pin 62 | PF7/ADC15/TDI — Port F bit 7 / ADC input 15 / JTAG TDI |
| Pin 63 | RESET — Active-low reset input |
| Pin 64 | XTAL2 — Crystal oscillator output (per datasheet) |
| Pin 65 | EP (Exposed Pad) — Thermal/electrical ground pad (must be soldered to PCB ground pour) |
Typical Applications
ATMEGA329PV-10MNR is suitable for 8 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA329PV-10MNR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- PicoPower low-power modes with 1.8 V operation (vs ATMEGA329-16AU)
- Higher operating temperature rating (vs ATMEGA329P-20AU)
- Slower 10 MHz CPU offers predictable EMI signature (vs ATMEGA329PA-MUR)
- Smaller Flash for cost-sensitive designs (vs ATMEGA325PV-10MU)
Design Notes
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.
Compliance Information
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.
