ATMEGA325PV-10MUR - 8-bit AVR MCU 32KB 10MHz | Microchip
MPN: ATMEGA325PV-10MUR ✓ Hoạt độngATMEGA325PV-10MUR Tóm tắt
An 8-bit microcontroller is a single-chip computer that integrates a CPU core, program memory, data memory, and peripherals such as timers, UART, SPI, and ADC on one silicon die. Within the power-management hierarchy of embedded systems, the microcontroller sits at the top level of control: an MCU such as this AVR device supervises sensors, drives actuators, and manages lower-level power and interface ICs. The AVR ATmega family uses a modified Harvard architecture with single-cycle RISC instruction execution, making it one of the most widely taught and deployed 8-bit controller families in the industry.
Key features include the 32KB self-programmable FLASH with boot-code capability, 2KB of internal SRAM for data buffers, and 1KB of non-volatile EEPROM for parameter storage. The low-voltage V-grade operation from 1.8V supports single-cell battery and energy-harvesting designs, while the 10 MHz maximum clock targets low-EMI, low-power applications rather than maximum throughput. The 54 general-purpose I/O lines, USART, SPI, and JTAG debug interface provide full connectivity for industrial designs.
Technically, the ATmega325P executes most instructions in a single clock cycle through its pipelined RISC core with 32 general-purpose working registers. The P-suffix denotes the picoPower process generation with reduced leakage, and the V suffix indicates the wide 1.8V-5.5V operating voltage range. Peripherals typically include an 8-channel 10-bit ADC, multiple 8-bit and 16-bit timers with PWM, and on-chip debug via JTAG (per family architecture; refer to the manufacturer datasheet for exact peripheral counts).
Typical applications include battery-powered instruments, industrial sensor nodes, building automation controllers, and hand-held metering equipment where wide supply range and mature tool support matter more than raw processing speed.
Design consideration: the 64-QFN exposed-pad package requires a well-connected thermal pad for reliable grounding, and V-grade parts must satisfy power-supply derating rules at high clock speeds above the 10 MHz ceiling at reduced VCC.
This page synthesizes distributor pricing, drop-in same-family alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ATMEGA325PV-10MUR — 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 ATMEGA325PV-10MUR (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, Number of I/O, Instructions, Packaging.
ATMEGA325P-20MUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA325PA-MUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA325PA-AUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA325PV-10MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA3250PA-AUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA324PA-MCHR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA325PV-10MUR Tỷ lệ tối đa & tính chất điện
| Core | AVR 8-bit RISC |
| Series | AVR ATmega |
| Flash Memory | 32KB (16K x 16) |
| SRAM | 2KB |
| EEPROM | 1KB |
| Tần số xung maksimum | 10 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Hộp | 64-QFN (9x9 mm) with Exposed Pad |
| Số lượng chân | 64 |
| Number of I/Os | 54 |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel (T&R) |
| Trạng thái RoHS | Compliant (Green) |
| Programmability | In-System Programmable FLASH |
Hướng dẫn cấu hình chân ATMEGA325PV-10MUR 64-qfn (9x9 mm) with exposed pad
Cấu hình chân cho ATMEGA325PV-10MUR (64-qfn (9x9 mm) with exposed pad gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho ATMEGA325PV-10MUR.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ATMEGA325PV-10MUR phù hợp cho 6 Áp dụngs: Battery-Powered Instruments, Industrial Sensor Nodes, Building Automation Controllers, Hand-Held Metering Equipment, Consumer Appliance Control, Educational and Prototyping Platforms.
Battery-Powered Instruments
The ATMEGA325PV-10MUR fits battery-powered portable instruments because its 1.8V-5.5V V-grade supply range supports single-cell and multi-cell chemistries without a boost regulator, and the picoPower P-process generation minimizes leakage in sleep states. A 10 MHz clock is ample for metering math and display updates while drawing less dynamic current than 20 MHz parts. Powered from two AA cells through the full discharge curve, the device runs the ADC-scan, UI, and communication tasks directly, extending shelf life versus fixed 5V designs.
Được đề xuất
Industrial Sensor Nodes
In industrial sensing, the ATMEGA325PV-10MUR's industrial temperature rating, 54 I/O lines, and robust 5V noise margin make it a dependable node controller. The 32KB FLASH stores control logic plus OTA-style field update bootloaders, while the 1KB EEPROM retains calibration constants across power cycles. Its USART and SPI interfaces link to RS-485 transceivers and external ADCs, and the 64-QFN exposed-pad package bonds to a ground pour that improves EMI robustness on noisy factory floors with motor drives nearby.
Được đề xuất
Building Automation Controllers
Building automation panels benefit from the ATMEGA325PV-10MUR's generous 54 GPIOs for driving relays, reading switches, and scanning keypads, all from one 9x9 mm QFN. The 10 MHz grade keeps radiated emissions low for wall-box installations near Class-B EMC limits, while the wide 1.8V-5.5V supply range tolerates sagging 5V wall-wart rails. The 1KB EEPROM stores setpoints and schedules without external non-volatile memory, reducing BOM cost and board area in distributed room-controller designs.
Được đề xuất
Hand-Held Metering Equipment
Hand-held energy and utility meters use the ATMEGA325PV-10MUR for its balance of memory and power: 32KB FLASH holds multi-phase measurement firmware and LCD drivers logic, 2KB SRAM buffers accumulation registers, and the V-grade operation runs directly from a 3.6V lithium cell. The 10-bit ADC in the ATmega325 family performs energy sampling, and picoPower sleep modes between samples stretch battery service intervals. The QFN exposed pad provides a solid ground reference for accurate analog front-end performance in the field.
Được đề xuất
Consumer Appliance Control
White-goods and small-appliance controllers value the ATMEGA325PV-10MUR for cost-effective reliability: the mature AVR core has a long, proven field record, and the 64-pin QFN integrates touch-key scanning, triac timing, and UART diagnostics without external controllers. The 10 MHz clock is sufficient for PID temperature loops and display multiplexing, while GREEN/RoHS packaging satisfies global environmental rules. The wide supply range rides through mains-derived supply dips, and the JTAG interface accelerates production-line functional test fixtures.
Được đề xuất
Educational and Prototyping Platforms
The ATmega325 family is a mainstay of embedded-systems education because the AVR instruction set is simple, freely tooled with avr-gcc and Microchip Studio, and exhaustively documented. The ATMEGA325PV-10MUR's 64-pin QFN suits university capstone boards needing many I/O for multi-peripheral projects - LCDs, keypads, motors, and sensors simultaneously. In-System Programming over SPI lets students reflash boards in-circuit without sockets, and JTAG enables step-level debugging that teaches professional workflows on low-cost hardware platforms.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATMEGA325PV-10MUR — 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 | ATMEGA325P-20MUR | ATMEGA325PA-MUR | ATMEGA325PV-10MU | ATMEGA325PA-AUR |
|---|---|---|---|---|---|
| Package | 64-QFN (9x9) EP | 64-QFN (9x9) EP - same | 64-QFN (9x9) EP - same | 64-QFN (9x9) EP - same | TQFP-64 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 10 MHz | 20 MHz | 20 MHz | 10 MHz | 20 MHz |
| Flash Memory | 32KB | 32KB | 32KB | 32KB | 32KB |
| SRAM | 2KB | 2KB | 2KB | 2KB | 2KB |
| Low-Power Generation | picoPower (P) | picoPower (P) | picoPower A-grade (enhanced) | picoPower (P) | picoPower A-grade (enhanced) |
| Packaging / Delivery | Tape & Reel | Tape & Reel | Tape & Reel | Tray | Tape & Reel |
Bảo phân biệt quan trọng
- Lowest speed grade equals lowest dynamic power and EMI in family (vsATMEGA325P-20MUR)
- Cost-effective mature P-generation process (vsATMEGA325PA-MUR)
- Full 54 I/O in a compact 9x9 mm QFN (vsATMEGA324PA-AUR)
Ghi chú thiết kế
The 64-QFN (9x9) exposed pad is the device's primary ground return. Solder the center pad to a continuous ground plane with an array of thermal vias (e.g., 4x4 via grid); a floating pad causes erratic reset and ADC noise. Pin-1 orientation is marked by the dot at top-left of the footprint. Follow Microchip AVR QFN land-pattern recommendations for stencil aperture design - roughly 50-60% paste coverage on the center pad to avoid tombstoning peripheral pins during reflow.
Because this V-grade part runs 1.8V-5.5V, respect the frequency-versus-voltage derating curve in the datasheet: near 1.8V the safe clock is far below 10 MHz, while 10 MHz is guaranteed only at higher VCC. Decouple each VCC/AVCC pin pair with 100 nF ceramics placed within 2 mm of the pins, plus one bulk 10 uF. Tie AVCC to VCC through an RC filter (e.g., 10 ohm + 100 nF) when ADC accuracy matters. All voltage-margin conclusions here are estimates - verify against the current datasheet derating chart.
Set fuses for the external crystal clock before relying on UART baud accuracy; the internal RC oscillator has percent-level tolerance unsuitable for precise baud rates. Keep the RESET pin pull-up (10 k ohm) and consider enabling the brown-out detector, since slow supply ramp-down with BOD disabled can corrupt EEPROM. When migrating to the ATMEGA325PA variants, re-check register-level picoPower differences; the PA generation changes some sleep-mode and clock-preservation behavior relative to the P generation.
Thông tin tuân thủ
Listed as GREEN/ROHS by Atmel-era ordering data and LCSC ('ROHS'); lead-free per Green designation. REACH, halogen-free, and conflict-minerals status require the official Microchip environmental report.
