ATMEGA329PV-10MNR - 8-bit AVR MCU, 32KB Flash, 10MHz | Microchip
MPN: ATMEGA329PV-10MNR ✓ Hoạt độngATMEGA329PV-10MNR Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ATMEGA329PV-10MNR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATMEGA329PV-10MNR (cùng hình factor và footprint) — khác nhau ở Package, ADC, LCD Controller, RoHS Status, Operating Temperature.
ATMEGA329P-20AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA329PA-MUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA329A-MUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA3290PV-10AUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA329-16AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA3290PA-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA325PV-10MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA329PV-10MNR Tỷ lệ tối đa & tính chất điện
| 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 |
| Nhiệt độ hoạt động | -40C to +105C |
| Hộp | 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 |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATMEGA329PV-10MNR
| Chân 1 | VCC — Digital supply voltage (1.8V–5.5V) |
| Chân 2 | PE0/RXD0 — Port E bit 0 / USART0 Receive |
| Chân 3 | PE1/TXD0 — Port E bit 1 / USART0 Transmit |
| Chân 4 | PE2/OC0A — Port E bit 2 / Timer/Counter0 Compare Match A |
| Chân 5 | PE3/OC0B — Port E bit 3 / Timer/Counter0 Compare Match B |
| Chân 6 | PE4/INT4 — Port E bit 4 / External Interrupt 4 |
| Chân 7 | PE5/OC1C — Port E bit 5 / Timer/Counter1 Compare Match C |
| Chân 8 | PE6/INT6 — Port E bit 6 / External Interrupt 6 |
| Chân 9 | PE7/CLKO — Port E bit 7 / System Clock Output |
| Chân 10 | PD0/SEG0 — Port D bit 0 / LCD Segment 0 |
| Chân 11 | PD1/SEG1 — Port D bit 1 / LCD Segment 1 |
| Chân 12 | PD2/SEG2 — Port D bit 2 / LCD Segment 2 |
| Chân 13 | PD3/SEG3 — Port D bit 3 / LCD Segment 3 |
| Chân 14 | PD4/SEG4 — Port D bit 4 / LCD Segment 4 |
| Chân 15 | PD5/SEG5 — Port D bit 5 / LCD Segment 5 |
| Chân 16 | PD6/SEG6 — Port D bit 6 / LCD Segment 6 |
| Chân 17 | PD7/SEG7 — Port D bit 7 / LCD Segment 7 |
| Chân 18 | GND — Ground |
| Chân 19 | PC0/SEG8 — Port C bit 0 / LCD Segment 8 |
| Chân 20 | PC1/SEG9 — Port C bit 1 / LCD Segment 9 |
| Chân 21 | PC2/SEG10 — Port C bit 2 / LCD Segment 10 |
| Chân 22 | PC3/SEG11 — Port C bit 3 / LCD Segment 11 |
| Chân 23 | PC4/SEG12 — Port C bit 4 / LCD Segment 12 |
| Chân 24 | PC5/SEG13 — Port C bit 5 / LCD Segment 13 |
| Chân 25 | PC6/SEG14 — Port C bit 6 / LCD Segment 14 |
| Chân 26 | PC7/SEG15 — Port C bit 7 / LCD Segment 15 |
| Chân 27 | AVCC — Analog supply voltage (must match VCC) |
| Chân 28 | AREF — ADC reference voltage |
| Chân 29 | AGND — Analog ground |
| Chân 30 | PA0/ADC0 — Port A bit 0 / ADC input 0 |
| Chân 31 | PA1/ADC1 — Port A bit 1 / ADC input 1 |
| Chân 32 | PA2/ADC2 — Port A bit 2 / ADC input 2 |
| Chân 33 | PA3/ADC3 — Port A bit 3 / ADC input 3 |
| Chân 34 | PA4/ADC4 — Port A bit 4 / ADC input 4 |
| Chân 35 | PA5/ADC5 — Port A bit 5 / ADC input 5 |
| Chân 36 | PA6/ADC6 — Port A bit 6 / ADC input 6 |
| Chân 37 | PA7/ADC7 — Port A bit 7 / ADC input 7 |
| Chân 38 | AVCC2 — Secondary analog supply for LCD charge pump |
| Chân 39 | PB0/SEG16 — Port B bit 0 / LCD Segment 16 |
| Chân 40 | PB1/SEG17 — Port B bit 1 / LCD Segment 17 |
| Chân 41 | PB2/SEG18/SS — Port B bit 2 / LCD Segment 18 / SPI Slave Select |
| Chân 42 | PB3/SEG19/MOSI — Port B bit 3 / LCD Segment 19 / SPI MOSI |
| Chân 43 | PB4/SEG20/MISO — Port B bit 4 / LCD Segment 20 / SPI MISO |
| Chân 44 | PB5/SEG21/SCK — Port B bit 5 / LCD Segment 21 / SPI Clock |
| Chân 45 | PB6/SEG22/OC1B — Port B bit 6 / LCD Segment 22 / Timer1 Compare B |
| Chân 46 | PB7/SEG23/OC1A — Port B bit 7 / LCD Segment 23 / Timer1 Compare A |
| Chân 47 | PH0/SEG24 — Port H bit 0 / LCD Segment 24 |
| Chân 48 | PH1/SEG25 — Port H bit 1 / LCD Segment 25 |
| Chân 49 | PH2/COM0 — Port H bit 2 / LCD Common 0 |
| Chân 50 | PH3/COM1 — Port H bit 3 / LCD Common 1 |
| Chân 51 | PH4/COM2 — Port H bit 4 / LCD Common 2 |
| Chân 52 | PH5/COM3 — Port H bit 5 / LCD Common 3 |
| Chân 53 | PH6/TOSC1 — Port H bit 6 / Timer Oscillator pin 1 (32 kHz) |
| Chân 54 | PH7/TOSC2 — Port H bit 7 / Timer Oscillator pin 2 (32 kHz) |
| Chân 55 | PF0/ADC8 — Port F bit 0 / ADC input 8 |
| Chân 56 | PF1/ADC9 — Port F bit 1 / ADC input 9 |
| Chân 57 | PF2/ADC10 — Port F bit 2 / ADC input 10 |
| Chân 58 | PF3/ADC11 — Port F bit 3 / ADC input 11 |
| Chân 59 | PF4/ADC12/TCK — Port F bit 4 / ADC input 12 / JTAG TCK |
| Chân 60 | PF5/ADC13/TMS — Port F bit 5 / ADC input 13 / JTAG TMS |
| Chân 61 | PF6/ADC14/TDO — Port F bit 6 / ADC input 14 / JTAG TDO |
| Chân 62 | PF7/ADC15/TDI — Port F bit 7 / ADC input 15 / JTAG TDI |
| Chân 63 | RESET — Active-low reset input |
| Chân 64 | XTAL2 — Crystal oscillator output (per datasheet) |
| Chân 65 | EP (Exposed Pad) — Thermal/electrical ground pad (must be soldered to PCB ground pour) |
Ứng dụng tiêu biểu
ATMEGA329PV-10MNR phù hợp cho 8 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATMEGA329PV-10MNR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- PicoPower low-power modes with 1.8 V operation (vsATMEGA329-16AU)
- Higher operating temperature rating (vsATMEGA329P-20AU)
- Slower 10 MHz CPU offers predictable EMI signature (vsATMEGA329PA-MUR)
- Smaller Flash for cost-sensitive designs (vsATMEGA325PV-10MU)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
