ATMEGA328P-15MZ 32KB 8-Bit AVR MCU | Microchip Technology
部品番号: ATMEGA328P-15MZ ✓ 生産中ATMEGA328P-15MZ 概要
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.
ドロップイン代替品: ATMEGA328P-15MZ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATMEGA328P-15MZ （同一形状・フットプリント） — 相違点: Package, Operating Temperature, ADC, Communication Interfaces, General-Purpose I/O Lines.
ATMEGA328P-MNR
✅ ドロップイン価格はお問い合わせください
データシートを見る →ATMEGA328P-MUR
✅ ドロップイン価格はお問い合わせください
データシートを見る →ATMEGA328P-ANR
✅ ドロップイン価格はお問い合わせください
データシートを見る →ATMEGA328PB-MNR
✅ ドロップイン価格はお問い合わせください
データシートを見る →ATMEGA328-MU
✅ ドロップイン価格はお問い合わせください
データシートを見る →LGT8F328
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATMEGA328P-15MZ 最大定格＆電気的特性
| 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 |
| パッケージ | 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 |
| ライフサイクル状態 | Active |
ATMEGA328P-15MZ 1.00 mm maximum ピン配置ガイド
ATMEGA328P-15MZ (1.00 mm maximum パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: ATMEGA328P-15MZ.
詳細は データシート をご参照ください。
主な用途
ATMEGA328P-15MZ の用途: 6 件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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATMEGA328P-15MZ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- Original ATmega328P device identity and established firmware ecosystem （vs ATMEGA328PB-MNR)
- Active 32-pin QFN alternatives with matching memory capacity （vs ATMEGA328P-MNR)
- Direct manufacturer-family continuity without cross-brand conversion risk （vs LGT8F328)
設計ノート
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.
コンプライアンス情報
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.
