ATMEGA328P-15MZ 32KB 8-Bit AVR MCU | Microchip Technology
料号： ATMEGA328P-15MZ ✓ 量产中ATMEGA328P-15MZ 概述
An AVR microcontroller is a type of 8-bit embedded microcontroller that executes a reduced-instruction-set computer architecture with program memory, data memory, general-purpose I/O, timers, and serial interfaces integrated on one semiconductor device. Within the product hierarchy, ATmega328P devices combine a general-purpose RISC processor with flash program storage, SRAM, EEPROM, and communication peripherals for applications where a small, deterministic embedded controller is preferable to a general-purpose processor.
The verified data identifies the device as a low-power AVR device with 131 instructions, mostly single-clock-cycle execution, 32 general-purpose working registers, and three timer/counter blocks. Its 32 KB flash supports in-system programming, while 1024 bytes of EEPROM provides nonvolatile data storage. The reported 23 general-purpose I/O lines make the controller suitable for boards that need several discrete inputs and outputs while retaining an integrated, compact implementation.
Communication and timing resources support embedded product development across common industrial, consumer, and educational platforms. The verified family description includes I2C, SPI, and UART/USART-style connectivity in the ATmega328P family, while the timers support timing, input capture, output compare, and PWM-oriented control functions. Compared with a discrete logic controller, the integrated approach reduces the number of external ICs required for basic sensing, actuation, and communication tasks.
Typical uses include Arduino-compatible embedded boards, data-acquisition front ends, simple industrial controllers, educational instruments, and low-power standalone products. The ATMEGA328P family is especially recognizable in compact hobbyist and maker platforms, but the same integrated resources can serve production designs that require flash-resident firmware, EEPROM parameters, serial links, and precise timer-based control.
Designers should verify the exact clock, voltage, temperature, pin, and fuse limits against the manufacturer documentation because the supplied web results present conflicting clock and supply-range descriptions. The -15MZ ordering code and some search snippets indicate a restricted speed grade, while other snippets list 16 MHz or 20 MHz for related variants. PCB layouts should preserve the exposed-pad land pattern, provide the required bypass capacitors, and follow the manufacturer guidance for programming and clock implementation.
This page consolidates the verified memory, core, package, interface, lifecycle, pricing-reference, and cross-reference information for ATMEGA328P-15MZ. It also adds package-specific selection guidance, qualified drop-in comparison points, and practical design considerations so engineers can distinguish a true PCB-compatible replacement from a merely similar AVR or 8-bit MCU.
直接替换替代料： ATMEGA328P-15MZ ——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： ATMEGA328P-15MZ （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, ADC, Communication Interfaces, General-Purpose I/O Lines.
ATMEGA328P-MNR
✅ 直接替换联系询价
查看数据手册 →ATMEGA328P-MUR
✅ 直接替换联系询价
查看数据手册 →ATMEGA328P-ANR
✅ 直接替换联系询价
查看数据手册 →ATMEGA328PB-MNR
✅ 直接替换联系询价
查看数据手册 →ATMEGA328-MU
✅ 直接替换联系询价
查看数据手册 →LGT8F328
✅ 直接替换📋 参考替代料（不在目录中）
ATMEGA328P-15MZ 最大额定值与电气特性
| Product Type | 8-bit AVR RISC microcontroller |
| Program Memory | 32 KB in-system programmable flash |
| EEPROM | 1024 bytes |
| SRAM | 2 KB |
| General-Purpose I/O Lines | 23 lines |
| General-Purpose Working Registers | 32 registers |
| Instruction Set | 131 instructions |
| Execution Model | Mostly single-clock-cycle execution |
| Timer/Counter Blocks | 3 blocks |
| Core Architecture | AVR RISC |
| 封装 | 32-pin QFN with exposed pad, 10 mm x 10 mm |
| Package Pitch | 0.80 mm |
| Package Height | 1.00 mm maximum |
| Programming | In-system programmable |
| Serial Interfaces | I2C, SPI, UART/USART |
| 生命周期状态 | Active |
ATMEGA328P-15MZ 1.00 mm maximum 引脚配置指南
ATMEGA328P-15MZ（1.00 mm maximum 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： ATMEGA328P-15MZ.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATMEGA328P-15MZ 适用于 6 应用s: Arduino-Compatible Embedded Control Boards, Industrial Sensor and Actuator Controller, Data Acquisition and Instrumentation, LED Lighting and Dimming Controller, Networked Edge and Communication Module, Low-Power Consumer and Educational Products.
Arduino-Compatible Embedded Control Boards
ATMEGA328P-15MZ fits compact Arduino-compatible controller boards because the verified device combines 32 KB of in-system programmable flash with 2 KB of SRAM, 1024 bytes of EEPROM, and 23 general-purpose I/O lines. Those resources support bootloader storage, application firmware, configuration data, and multiple digital interfaces on a small board. The 32-pin QFN with exposed pad also allows a compact land pattern, but the exposed pad must follow the manufacturer layout guidance. Engineers should confirm clock and voltage limits for the exact ordering code before relying on a legacy board configuration.
推荐
Industrial Sensor and Actuator Controller
ATMEGA328P-15MZ is suitable for compact industrial sensor-and-actuator modules because its 23 general-purpose I/O lines provide a practical interface count for digital sensors, switches, indicators, and control outputs. The three timer/counter blocks support periodic measurement and PWM-oriented functions, while the 1024-byte EEPROM can retain local configuration. The low-power AVR architecture is useful in equipment that spends time idle, although sleep-current limits and brownout behavior are not present in the supplied excerpts and must be confirmed from the manufacturer datasheet before production release.
推荐
Data Acquisition and Instrumentation
ATMEGA328P-15MZ can serve as the local control processor in a small data-acquisition instrument because its 32 KB flash stores acquisition code, calibration routines, and communication firmware, while 2 KB of SRAM supports runtime buffering. Its I2C and SPI connectivity permits connection to sensors, converters, and external memory, and the UART/USART provides a straightforward host interface. The 23 I/O lines leave room for status indicators and control signals. Designers should budget memory carefully and confirm ADC, clock, and serial timing parameters because those values are not included in the supplied verified snippets.
推荐
LED Lighting and Dimming Controller
ATMEGA328P-15MZ is appropriate for an LED dimming or lighting-sequencing controller because three timer/counter blocks can support timing and PWM duties, while 23 I/O lines can distribute channel-enable and fault signals. The 32 KB program memory is sufficient for calibration tables, lighting scenes, communications, and diagnostics, while EEPROM can preserve settings across power cycles. A compact 32-pin QFN helps reduce board area, although the exposed-pad connection and thermal layout must follow the authoritative package drawing. LED current drive and dimming polarity should be handled by suitable external circuitry.
推荐
Networked Edge and Communication Module
ATMEGA328P-15MZ can act as the supervisory controller in a compact edge or communications module because the ATmega328P family provides I2C, SPI, and UART/USART connectivity alongside 32 KB of flash and EEPROM. These resources allow the MCU to manage a network controller, local sensors, status indicators, and configuration storage without a separate processor. Its 16 MHz versus 20 MHz clock distinction among related listings makes exact-MPN verification essential for timing-sensitive protocols. Firmware should use conservative baud-rate margins and confirm all peripheral timing requirements against the manufacturer documentation.
推荐
Low-Power Consumer and Educational Products
ATMEGA328P-15MZ fits compact consumer accessories and educational controller products because it integrates flash, SRAM, EEPROM, timers, serial interfaces, and 23 I/O lines in one low-power 8-bit device. It can execute user-interface logic, measure inputs, drive indicators, and communicate with a host while avoiding the cost and complexity of a larger processor. The small 32-pin QFN package supports dense layouts, but beginners and high-volume manufacturers must observe the exposed-pad soldering requirements. Exact low-power mode currents and programming voltage limits must be verified before finalizing a battery-operated design.
推荐
推荐产品汇总
工程参考数据： ATMEGA328P-15MZ ——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 | ATMEGA328P-MNR | ATMEGA328P-MUR | ATMEGA328P-ANR | ATMEGA328PB-MNR | ATMEGA328-MU | LGT8F328 |
|---|---|---|---|---|---|---|---|
| Package | 32-pin QFN with exposed pad | 32-pin QFN with exposed pad | 32-pin QFN with exposed pad | 32-pin QFN with exposed pad | 32-pin QFN with exposed pad | 32-pin QFN with exposed pad | 32-pin QFN with exposed pad |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | LGT8F328 |
| Architecture | 8-bit AVR RISC | 8-bit AVR RISC | 8-bit AVR RISC | 8-bit AVR RISC | 8-bit AVR RISC | 8-bit AVR RISC | AVR-compatible 8-bit controller |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
关键差异点
- Original ATmega328P device identity and established firmware ecosystem （对比 ATMEGA328PB-MNR)
- Active 32-pin QFN alternatives with matching memory capacity （对比 ATMEGA328P-MNR)
- Direct manufacturer-family continuity without cross-brand conversion risk （对比 LGT8F328)
设计说明
Implement the 32-pin QFN land pattern from the manufacturer package drawing rather than scaling a generic 32-pin footprint. Reserve the exposed-pad copper and solder lands, and route the exposed pad to the appropriate supply or ground plane specified by the datasheet. Maintain the manufacturer’s recommended spacing around the package; because no authoritative pin-by-pin drawing was supplied here, validate every net against the exact ordering-code datasheet before releasing artwork.
Place the required input bypass capacitors close to the supply pins and provide clean return paths for switching and digital loads. The supplied excerpts disagree on the operating-voltage range—one distributor snippet lists 4.5 V to 5.5 V, while another lists 1.8 V to 5.5 V for the family listing—so do not select the decoupling or regulator solely from those snippets. Confirm the voltage limits and decoupling requirements for ATMEGA328P-15MZ before power-up.
Do not assume that every ATmega328P or ATmega328PB orderable MPN is an automatic substitute. The B revision can alter peripheral behavior, and related listings show 16 MHz or 20 MHz clock ratings while the target suffix indicates a restricted grade. Before replacing ATMEGA328P-15MZ, compare the clock fuse configuration, brownout behavior, ADC and timer details, serial interfaces, package drawing, and existing firmware assumptions.
Separate clock, serial, and sensitive sensor paths from high-current switching nodes and maintain a compact ground reference under the MCU where practical. Use the three timer/counter blocks and 23 I/O lines deliberately, leaving suitable unused pins for future expansion only after checking reset and programming requirements. ISP programming and boot-loader access should remain electrically reachable on production fixtures without adding long signal branches to the operating board.
合规信息
The supplied verified results identify an active lifecycle status but do not provide explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 evidence for the exact MPN. ATMEGA328P-ANR is treated as an automotive-oriented ordering variant, but that does not establish AEC-Q100 qualification for the non-automotive target.
