ATMEGA325PV-10MUR - 8-bit AVR MCU 32KB 10MHz | Microchip
料号： ATMEGA325PV-10MUR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.99 | $5.99 |
| 10 | $5.39 | $53.90 |
| 100 | $4.79 | $479.00 |
| 500 | $4.32 | $2,160.00 |
| 1,000 | $3.89 | $3,890.00 |
ATMEGA325PV-10MUR 概述
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.
直接替换替代料： ATMEGA325PV-10MUR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATMEGA325PV-10MUR （相同外形与封装尺寸） ——差异在于 Package, RoHS Status, Number of I/O, Instructions, Packaging.
快速对比工具——选择替代料号进行并排对比：
ATMEGA325P-20MUR
✅ 直接替换✓ 有现货
$2.86 / 个
查看数据手册 →ATMEGA325PA-MUR
✅ 直接替换✓ 有现货
$1.65 / 个
查看数据手册 →ATMEGA325PA-AUR
✅ 直接替换✓ 有现货
$3.9 / 个
查看数据手册 →ATMEGA325PV-10MU
✅ 直接替换✓ 有现货
$2.19 / 个
查看数据手册 →ATMEGA3250PA-AUR
✅ 直接替换✓ 有现货
$2.98 / 个
查看数据手册 →ATMEGA324PA-MCHR
✅ 直接替换✓ 有现货
$2.55 / 个
查看数据手册 →ATMEGA325PV-10MUR 最大额定值与电气特性
| Core | AVR 8-bit RISC |
| Series | AVR ATmega |
| Flash Memory | 32KB (16K x 16) |
| SRAM | 2KB |
| EEPROM | 1KB |
| 最大时钟频率 | 10 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| 封装 | 64-QFN (9x9 mm) with Exposed Pad |
| 引脚数 | 64 |
| Number of I/Os | 54 |
| 工作温度 | -40C to +85C (Industrial) |
| 安装类型 | Surface Mount |
| Packaging | Tape & Reel (T&R) |
| RoHS 状态 | Compliant (Green) |
| Programmability | In-System Programmable FLASH |
ATMEGA325PV-10MUR 64-qfn (9x9 mm) with exposed pad 引脚配置指南
ATMEGA325PV-10MUR（64-qfn (9x9 mm) with exposed pad 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATMEGA325PV-10MUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATMEGA325PV-10MUR 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： ATMEGA325PV-10MUR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Lowest speed grade equals lowest dynamic power and EMI in family （对比 ATMEGA325P-20MUR)
- Cost-effective mature P-generation process （对比 ATMEGA325PA-MUR)
- Full 54 I/O in a compact 9x9 mm QFN （对比 ATMEGA324PA-AUR)
设计说明
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.
合规信息
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.
